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CTs Multi-Channel USP/CN Series

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1. 5 Troubleshooting continued NOTE Actual product artwork may vary slightly IQ DATA PRESET IN USE LINK IN USE CONDUCTOR ACTIVITY CONDUCTOR PRIMARY SECONDARY CobraNet page 26 Problem Data indicator is not flashing even though a valid command was sent Possible causes e Command was not addressed to the USP CN e Network cable is disconnected or broken To assist with troubleshooting System Architect can set an option for force the data indicator on Problem Green Preset indicator is flashing or is not flashing Possible cause This is nota problem This indicator signals the number of the current preset if active by flashing a series of flashes equal to the current preset number A preset is considered active if the USP CN settings match those in the selected preset If a change is made to any setting then the preset is considered inactive and the indicator stops flashing Problem Both right indicators flash yellow in unison to report a fatal error Possible cause An unexpected condition within the CobraNet interface has been detected t LINK ACTIVITY CTs Multi Channel Power Amplifiers Problem Green LINK ACTIVITY indicator in network connector does not illuminate or flash Possible cause Ethernet link is broken or network connection is 10 Mbps Check Ethernet connections to the network switch Problem Computer does not communicate with the network devices Possi
2. amp crown Q by HARMAN HiQnet CTs Multi Channel USP CN Series CTs 4200USP CN Operation Manual fe 700 CTs 8200USP CN Obtaining Other Language Versions To obtain information in another language about the use of this product please contact your local Crown Distributor If you need assistance locating your local distributor please contact Crown at 574 294 8000 This manual does not include all of the details of design production or variations of the equipment Nor does it cover every possible Situation which may arise during installation operation or maintenance The information provided in this manual was deemed accurate as of the publication date However updates to this information may have occurred To obtain the latest version of this manual please visit the Crown website at www crownaudio com Trademark Notice Crown Crown Audio Amcron Com Tech IQ System and Multi Mode are registered trademarks of Crown International HiQnet and System Architect are trademarks of Harman Pro Group Other trademarks are the property of their respective owners Some models may be exported under the name Amcron 2008 by Crown Audio Inc 1718 W Mishawaka Rd Elkhart Indiana 46517 9439 U S A Telephone 574 294 8000 139309 4 10 10 Crouogrr Important Safety Instructions Importantes Instructions de S curit 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all in
3. connections between components A full duplex link allows simultaneous send and receive over the same Ethernet connection In theory each connection can simultaneously send and receive up to 64 channels per node for a total of 128 channels However current CobraNet components can handle only 64 channels 32 in and 32 out Switches and full duplex connections allow up to 128 channels per component and greater than 3000 individual Unicast channels Switched networks also allow controllers Such as computers to be on the same network as CobraNet devices page 35 Crouwwil by HARMAN 9 Service Crown amplifiers are quality units that rarely require servicing Before returning your unit for service please contact Crown Technical Support to verify the need for servicing This unit has very sophisticated circuitry which should only be serviced by a fully trained technician This is one reason why each unit bears the following label CAUTION To prevent electric shock do not remove covers No user serviceable parts inside Refer servicing to a qualified technician Complete the Crown Audio Factory Service Information form in the back of this manual when returning a Crown product to the factory or authorized service center The form must be included with your product inside the box or ina packing slip envelope securely attached to the outside of the shipping carton Do not send this form separately Warranty is only vali
4. intentional misuse accident negligence or loss which is covered under any of your insurance contracts This Crown Warranty also does not extend to the new Crown product if the serial number has been defaced altered or removed WHAT THE WARRANTOR WILL DO We will remedy any defect regardless of the reason for failure except as excluded by repair replacement or refund We may not elect refund unless you agree or unless we are unable to provide replacement and repair is not practical or cannot be timely made If a refund is elected then you must make the defective or malfunctioning product available to us free and clear of all liens or UNITED STATES amp CANADA other encumbrances The refund will be equal to the actual purchase price not including interest insurance closing costs and other finance charges less a reasonable depreciation on the product from the date of original purchase Warranty work can only be performed at our authorized service centers or at the factory Warranty work for some products can only be performed at our factory We will remedy the defect and ship the product from the service center or our factory within a reasonable time after receipt of the defective product at our authorized service center or our factory All expenses in remedying the defect including surface shipping costs in the United States will be borne by us You must bear the expense of shipping the product between any foreign co
5. level control for the higher even numbered channel of the channel pair The lower odd numbered level control works both channels 2 9 4 Bridge Mono 100V Mode A CAUTION Never change the position of the Mode Switch while the amplifier power is on Typical analog input and output wiring along with level control and Mode Switch settings are shown in Figure 2 12 Make sure the Mode Switch is set to the Bridge 100V position INPUTS Connect input wiring only to the lower odd numbered channel pair OUTPUTS Connect the speaker across the positive terminals of each channel pair Do not use the negative terminals of the channel pair when the pair is being operated in Bridge Mono mode NOTE When operating the channel pair in Bridge Mono mode turn down full CCW the level control for the higher even numbered channel of the channel pair The lower odd numbered level control works both channels page 12 CTs Multi Channel Power Amplifiers see the Crown Amplifier Application AEN an T aA Guide available a NN online at www e 2 Do 3 yy crownaudio 80 dB 0 com for pin DUAL BRIDGE assignments for A iw commonly used connector types oHa f oHa Figure 2 11 System Wiring and Control Settings Bridge Mono Mode 16 8 Ohm T n a DUAL BRIDGE 8 44 piov PUTS DUAL X E DUAL DE proces Figure 2 12 System Wiring and Control Settings Bridge Mono Mode 100V Operation Manual CTs Multi Chan
6. CHANGES We reserve the right to change the design of any product from time to time without notice and with no obligation to make corresponding changes in products previously manufactured LEGAL REMEDIES OF PURCHASER THIS CROWN WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE No action to enforce this Crown Warranty shall be commenced after expiration of the warranty period THIS STATEMENT OF WARRANTY SUPERSEDES ANY OTHERS CONTAINED IN THIS MANUAL FOR CROWN PRODUCTS 5 11 page 39 Crougrr by HARMAN page 40 THIS PAGE INTENTIONALLY LEFT BLANK CTs Multi Channel Power Amplifiers Operation Manual CTs Multi Channel Power Amplifiers Crouwih by HARMAN CUT ON THIS LINE Operation Manual PRODUCT REGISTRATION S 1718 W Mishawaka Rd p Elkhart IN 46517 9439 Cro uw Phone 574 294 8000 py HARMAN Fax 574 294 8329 www crownaudio com Online registration is also available at http crownweb crownint com webregistration Warranty is only valid within the United States of America For information on Warranty outside of the U S A please contact your local distributor When this form is used to register your product it may be mailed or faxed Crown Audio Inc Fax 574 294 8329 1718 W Mishawaka Rd Elkhart IN 46517 Please note that some information is required Incomplete registrations will not be processed Indicates required information OWNE
7. Card ID A Card ID is located on the back of the card following the credit card in the signature area On American Express it may be located on the front of the card This number is required to process the charge to your account If you do not want to provide it at this time we will call you to obtain this number when the repair of your unit is complete Name on credit card page 43 CrO ey HARMAN
8. Ensure Proper Cooling When using an equipment rack mount units directly on top of each other Close any open spaces in rack with blank panels DO NOT block front rear or side air vents The side walls of the rack should be a minimum of two inches 5 1 cm away from the amplifier sides and the back of the rack should be open Figure 2 2 illustrates standard amplifier airflow Figure 2 2 Airflow Operation Manual CTs Multi Channel Power Amplifiers 2 Setup continued 2 4 Front Panel Controls and Indicators Note CTs 8200USP CN is shown Some CTs 4200 USP CN features are in different locations A Bridge Mode Indicator Yellow LED one per channel pair illuminates when the channel pair s Mode Switch is set to the Bridge position If Mode switch is changed while amplifier is powered up Bridge LED will flash indicating that the amplifier must be powered off and on to reset the Mode B Ready Indicator Green LED one per channel illuminates when the channel is initialized and ready to produce audio output Operation Manual Signal Indicator G Green LED one per channel illuminates to indicate the presence of analog input signals above 40 dBu Clip Indicator Red LED one per channel illuminates when the THD of the channel s output signal rises to a level typically considered as the onset of audible clipping The Clip Indicator also will illuminate during Thermal Level l Control TLC
9. See Section 3 2 1 E CobraNet Network Connectors The dual RJ45 CobraNet connectors allow a Primary amp Secondary connection to the 100 Mbps Ethernet network Should the Primary connection lose link activity with the network the module will automatically Switch to the Secondary connection to ensure uninterrupted audio and control The indicators on the RJ45 connectors display network information concerning the Ethernet and CobraNet connections See Sections 3 2 3 3 2 4 and 3 2 5 CONDUCTOR PRIMARY SECONDARY CobraNet Figure 2 5 USP CN Controls Indicators and Connectors Note Actual Product Artwork May Vary Slightly Crougrr by HARMAN page 9 Crougrr by HARMAN 2 Setup continued page 10 2 7 Choose Input Wire and Connectors If you will be connecting an analog audio signal to the CTs amplifier please read this section Figure 2 6 shows connector pin assignments for balanced wiring and Figure 2 7 shows connector pin assignments for unbalanced wiring When possible use balanced wiring for signal input which provides better rejection of unwanted noise and hum For more information refer to the Crown Amplifier Application Guide available online at www crownaudio com NOTE Custom wiring should only be performed by qualified personnel 2 8 Choose Output Wire and Connectors Crown recommends using professionally constructed high quality two or four conductor heavy gauge speaker wire and connectors Y
10. address each connection as Multicast or Unicast A Multicast Broadcast connection is from one transmitter to multiple receivers A Unicast connection is from one transmitter to Operation Manual one receiver For example if you send a mixer s digital audio signal to several power amps the signal would be Multicast Unicast is most used on switched networks requiring more than 64 channels You specify a connection as Multicast or Unicast by the delivery address it you give it in System Architect 255 and lower is Multicast Broadcast 256 and up is Unicast 8 2 4 The Conductor A CobraNet system is coordinated by one audio device in the network called the Conductor It regulates the CobraNet digital audio traffic on the CobraNet network That is the Conductor is the master clock for the rest of the network You choose one device to be the network conductor based on a priority scheme The Conductor indicator will light on the CobraNet device that is serving as the conductor The Conductor handles time division multiplexing and clock recovery on the network The Conductor periodically broadcasts a well defined beat packet to all components to recover synchronous timing information The beat also specifies which addresses can transmit at certain time slots within the beat period Each transmitting device is allowed to transmit in a given time slot within the Conductor controlled isochronous cycle time The time
11. are counted before starting the counting process over Its range is 1 to 10 seconds Note Clip events are defined as the start of each clip and every 10 milliseconds the amplifier is in clip thereafter Using a high count setting with a short time setting may result in clip error never being detected THERMAL Errors can be generated for excessive temperature in the output section of the amplifier channel The Threshold Control sets the level that if exceeded will generate the error report This control has a range of 1 to 100 LOAD If the load monitoring feature is activated an error report can be generated if the load impedance moves outside the pre selected range See Section 3 1 33 for instructions on setting up load monitoring LINE VOLTAGE The AC line voltage can be monitored and an error generated whenever the voltage is outside of the limits set at the factory Operation Manual CTs Multi Channel Power Amplifiers 3 Operation continued 3 2 23 Input Signal Compressor Limiter An input signal compressor limiter is available for each channel Five parameters control this feature Enable Enables or disables this function Threshold Sets the level in dBu above which the compressor begins to attenuate the input signal This level corresponds to the input level meter reading The compressor is feed forward meaning that the level detection point is located before the gain control stage The range is from 20
12. com for pin assignments for commonly used connector types Figure 2 7 Unbalanced Input Connector Wiring NOTE CTs 8200 USP CN is shown Some CTs 4200 USP CN features are in different locations 0 438 11 1 mm 8 SCREW CH4 GH 3 Figure 2 8 Output Connector Wiring Typical of Two Channels Output panel shown with touch proof cover plate removed Operation Manual CTs Multi Channel Power Amplifiers 2 Setup continued A 2 9 Audio Wiring CAUTION Never change the position of the Mode Switch while the amplifier power is on 2 9 1 Dual 8 4 Mode Typical analog input and output wiring along with level control and Mode Switch settings are shown in Figure 2 9 Make sure the Mode switch is set to the Dual 8 4 position Cobranet input wiring is covered in Section 2 11 INPUTS Connect input wiring for each channel OUTPUTS Maintain proper polarity on output connectors Connect the Channel 1 speaker s positive lead to amplifier Channel 1 positive terminal repeat for negative Repeat each channel wiring as for Channel 1 2 9 2 Dual 70V Mode CAUTION Never change the position of the Mode Switch while the amplifier power is on Typical input and output wiring along with level control and Mode Switch settings are shown in Figure 2 10 Make sure the Mode switch is set to the Dual 70V position INPUTS Connect input wiring for each channel OUTPUT
13. due to driver voice coil inductance or the peaks and valleys due to passive crossovers Testing of various passive boxes has shown peaks of 100 ohms or more Low frequency impedance variation can come from the interaction of the driver compliance with that of the box The low frequency variations are usually wide bandwidth and may vary from 6 to 30 ohms on an 8 ohm driver These anomalies are easily averaged out by the USP CN Supervision algorithm in most systems However there may be some extreme situations for very narrow bandwidth i e single note signals and or very widely varying loads that the algorithm simply cannot overcome In these cases widening the high and low limits will help decrease the sensitivity of supervision and decrease the chance of nuisance error reports 3 2 28 Filters Each audio channel has five separate places where filters can be placed in the system There are 64 filters total and they can be placed anywhere within the system In addition to filtering each possesses up to 24 dB of gain The filters will vary based on the firmware and software being run The following filters are available e Lowpass Bessel 2 4 Butterworth1 4 and Linkwitz Riley 4 Firmware 2 0 provides up to 8 Linkwitz Riley filters e Highpass Bessel 2 4 Butterworth1 4 and Linkwitz Riley 4 Firmware 2 0 provides up to 8 Linkwitz Riley filters Lowshelf Low frequency shelving EQ Highshelf High frequency shelvi
14. injection of a high frequency tone 19 kHz into the signal in paging type system to continually drive the speaker allowing continuous monitoring of the speaker load The following controls exist e Sine On Off The sine wave signal generator s function e Sine Frequency Controllable from 20 Hz to 20 kHz e Sine Level Each channel s sine wave signal level can be independently controlled 3 2 32 Input Signal Router Each channel of the module s signal processing has an Input Signal Router that lets you choose the audio signal that will be used by the channel Choose one of the following configurations Operation Manual CTs Multi Channel Power Amplifiers 3 Operation continued CobraNet Audio Assign this in the CobraNet Input section of the software See Section 3 3 2 for more details Choices for the CobraNet Input are from any of four bundles and any of the eight channels available CobraNet with Analog Backup In this mode if CobraNet audio is lost the module automatically switches to the chosen Balanced Audio Input until CobraNet audio returns CobraNet with Analog Override In this mode if a signal appears on the Analog Input the module s input signal switches from CobraNet to the Analog Input Then the CobraNet audio will be routed to the channel after 10 seconds 3 3 CobraNet CobraNet is a licensed technology developed by Peak Audio Inc consisting of proprietary communications protocol firmware and hardwar
15. switch or operator pushbutton It can be used by the software to change configuration settings on any or all system devices See the System Architect Help files for exact information Pin 5 of the AUX input is a power supply pin designed for use by the AUX input pin Since the AUX input floats low the AUX input can be triggered by just a simple switch closure between it and the AUX power pin No external power supply is needed to operate the AUX input under most conditions If the AUX input is used to sense a externally supplied voltage it must be scaled so that low inputs are between 0 and 1 6 VDC and high inputs are between 4 and 15 VDC Externally supplied voltages should be referenced to AUX ground on pin 3 The AUX input allows the AUX input to mute or power down all channels The AUX Input Inversion Control allows either a high or low AUX input to activate these functions This mode can be used for emergency shutdown for a fire alarm system A simple switch closure from the alarm system would disable an entire sound system when a fire alarm is activated 4 1 3 Listen Bus Wiring The AUX port is also used for the Listen Bus or Foldback connection Figure 4 3 Pins 1 and 6 of the connector provide a balanced line level audio output that can be selectively driven by either channel under software control Multiple amplifiers can have their Listen Bus outputs wired onto a single bus allowing the system operator to listen to any of their o
16. the USP CN s memory e The Store Preset Control saves the current setting to the specified preset e The Recall Preset Control recalls the specified preset settings e The Preset Valid Monitor indicates if a change has been made to any setting since the last time a preset has be saved or recalled e The Last Stored or Recalled Preset Monitor indicates what the Last Stored or Recalled preset is 3 2 11 Clip Event Monitor A clip detector is provided each channel These monitors will indicate any clip condition gt 0 05 distortion in the amplifier channel The clip detectors also can indicate certain errors See section 3 1 25 3 2 12 Input Signal Level Monitor The input signal level of each channel can be monitored via system Architect software The measurement range is from 20 dBu to 40 dBu with 0 5 dBu resolution Each audio channel has the following monitors e Analog audio input The audio input at the Balanced Audio Inputs e Switched audio input The audio input after the Input Audio Router page 16 e CobraNet audio input The audio input level from the selected CobraNet audio channel 3 2 13 Output Signal Level Monitor The output signal level of each channel can be monitored via system Architect software The measurement range is from 0 dB to 40 dB with 0 5 dB resolution The monitors are scaled so that 0 dB is referenced to the full rated output voltage of the amplifier 3 2 14 Thermal Headroom Level
17. 0 1 34 dB 50 1 34 dB 100V Operation 71 4 1 37 dB 71 4 1 37 dB Required AC Mains model dependent 120V 60 Hz 220 230 240V 50 Hz 100V 50 60H2 120V 60 Hz 220 230 240V 50 Hz Power Draw at Idle 120VAC mains all channels in 4 8 ohm mode 70W 70W Power Draw at Idle 120VAC mains all channels in 70V mode 114W 114W Cooling Continuously variable speed forced air front to back airflow Continuously variable speed forced air front to back airflow Dimensions Width Height Depth 19 in 48 3 cm W x 3 5 in 8 9 cm H x 16 25 in 41 3 cm D 19 in 48 3 cm W x 5 25 in 13 3 cm H x 16 25 in 41 3 cm D Net Weight Shipping Weight 26 Ib 6 oz 12 kg 30 Ib 14 oz 14 kg 36 Ib 6 oz 16 5 kg 47 Ib 21 3 kg USP CN CobraNet Module Specifications Memory Backup 4 Megabit non volatile FLASH memories for backup of run time parameters presets and program storage Capable of 10 000 write cycles Communications 100 Mb Fast Ethernet conforming to IEEE 802 3 Operation Manual Overall Audio Performance DSP Processing Two processors 32 bit floating point 724 us latency DAC Conversion 24 bit 250 us latency Dynamic Range 103 dB typical A weighted 20HZz 20kH7z audio sourced from muted CobraNet channel Distortion lt 0 1 THD N 20HZ2 20khz Frequency Response 0 5 dB 20HZ 20kHz Input Output Monitor Accuracy Typically 10B Maximum I
18. 10 cm and 20 cm EN 61000 3 2 2001 Limits for Harmonic Current Emissions equipment input current less than or equal to 16 A per phase EN 61000 3 3 2002 Limitation of Voltage Fluctuations and Flicker in Low Voltage Supply Systems Rated Current less than or equal to16A EN 55022 2003 Limits and Methods of Measurement of Radio Disturbance Characteristics of ITE Radiated Class B Limits Conducted Class A EN 55103 2 1997 Electromagnetic Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 2 Immunity EN 61000 4 2 2001 Electrostatic Discharge Immunity Environment E2 CriteriaB 4k V Contact 8k V Air Discharge EN 61000 4 3 2001 Radiated Radio Frequency Electromagnetic Immunity Environment E2 criteria A EN 61000 4 4 2001 Electrical Fast Transient Burst Immunity Criteria B EN 61000 4 5 2001 Surge Immunity Criteria B EN 61000 4 6 2003 Immunity to Conducted Disturbances Induced by Radio Frequency Fields Criteria A EN 61000 4 11 2001 Voltage Dips Short Interruptions and Voltage Variation Safety Standard IEC 60065 2001 7th Ed Safety Requirements Audio Video and Similar Electronic Apparatus certify that the product identified above conforms to the requirements of the EMC Council Directive 89 336 EEC as amended by 92 31 EEC and the Low Voltage Directive 73 23 EES as amended by 93 68 EEC Andrew Stump Title Director of Manufacturing DUE TO LINE CURRENT HARMO
19. 1kHz 20 Hz 20 kHz 8 ohm per ch pair 560W 450W 16 ohm per ch pair 440W 420W 100V per ch pair 250W 245W Constant Voltage full bandwidth power ratings support 100Hz 20kHz due to automatic High Pass Filters CTs 8200USP CN Maximum Average Power Dual in watts with 0 1 THD 8 Channels Driven 1kHz 20 HZz 20 kHz 4 ohm per ch 200W 175W 8 ohm per ch 160W 155W TOV per ch 200W 185W 1 Channel Driven 1kHz 20 Hz 20 kHz 4 ohm per ch 270W 230W 8 ohm per ch 220W 220W TOV per ch 250W 230W Bridge Mono 4 Channel Pairs Driven 1kHz 20 Hz 20 kHz 8 ohm per ch pair 400W 350W 16 ohm per ch pair 320W 310W 100V per ch pair 200W 185W 1 Channel Pair Driven 1kHz 20 Hz 20 kHz 8 ohm per ch pair 540W 460W 16 ohm per ch pair 440W 440W 100V per ch pair 250W 230W Constant Voltage full bandwidth power ratings support 100Hz 20kHz due to automatic High Pass Filters Operation Manual 1 Welcome Building on the foundation of the Com Tech Series Crown s CTs Series offers new flexibility and value for installed sound applications The Com Tech Series were the first to offer independent selection of high and low impedance operation for a specific channel and CTs series amplifiers continue that tradition with power levels and features carefully chosen to perfectly integrate into fixed install design requirements Thanks to the factory installed CobraNet and Control Module each amplifie
20. 3 2 20 User and Channel Labels In Qwic the module can store two user labels and channel labels In System Architect the module can store 4 or 8 channel labels and a unit label hese labels are 30 character strings that can be CTs Multi Channel Power Amplifiers set by the user to indicate the function of the amplifier and its channels For example LOWER RIGHT CLUSTER FOR DELAY 3 2 21 Line Voltage Monitor The AC line voltage supplied to the amplifier can be monitored with this function If the voltage is out of a safe area you can trigger an error 3 2 22 Error Reporting The module can detect three different error conditions per channel and errors in the AC line voltage Each error type can be configured to report the error through the control network and or the AUX port Network reported errors appear in the control software s Error Window The software offer many options to further report errors including audible alerts printout email pager serial port and fax The options are set in the software The following describes each error source CLIP The USP CN can be configured to report if an excessive number of clip events occur in either amplifier channel The clip events are consider an error if they exceed the defined count per the defined unit of time The Count Control sets the maximum number of events before the error is reported The range is 1 to 100 The Time Control defines the amount of time that the events
21. COMMCCION sccircctecucciracncncceemimaee AAO areata cease cores cen ecstoceeccs eccrine 8 2 3 Bundles and Audio Channels 8 2 4 The Conductor 8 2 5 Repeater Networks 8 2 6 Switched Networks 4 1 3 Listen Bus Wiring 4 2 Protection Systems 4 2 1 Thermal Level Control 9 1 International and Canada Service 4 2 3 Fault Isolation Topology FIT 4 2 4 35 Hz High Pass Filter 4 2 5 AC Under Voltage Over Voltage Protection 9 2 1 Service at a US Service Center 9 2 2 Factory Service 9 2 3 Factory Service Shipping Instructions 4 2 7 Inrush Limiting 9 2 4 Packing Instructions 4 2 8 Variable speed Fans 9 2 5 Estimate Approval 4 2 9 Switching Power Supply 9 2 6 Payment of Non Warranty Repairs 4 2 10 Mode Switch 4 2 11 Bridge Mode Indicator 4 2 12 Channel Level Control 5 Troubleshooting Product Registration Crown Factory Service Information Form 6 Specifications 7 AC Power Draw and Thermal Dissipation Operation Manual CTs Multi Channel Power Amplifiers CTs 4200USP CN Maximum Average Power Dual in watts with 0 1 THD 4 Channels Driven 1kHz 20 Hz 20 kHz 4 ohm per ch 260W 215W 8 ohm per ch 180W 190W TOV per ch 220W 220W 1 Channel Driven 1kHz 20 Hz 20 kHz 4 ohm per ch 2710W 225W 8 ohm per ch 220W 210W TOV per ch 250W 245W Bridge Mono 2 Channel Pairs Driven 1kHz 20 Hz 20 kHz 8 ohm per ch pair 520W 430W 16 ohm per ch pair 400W 380W 100V per ch pair 220W 220W 1 Channel Pair Driven
22. Monitor The thermal headroom level of each channel can be monitored with the software This level represents the percent of available power thermal capacity that is currently being used within the output section of the amplifier When the thermal headroom level reaches 100 the amplifier cannot produce any more power and it will begin to protect the output devices by limiting their drive level The thermal limiter feature of the USP CN can be set to engage at a pre selected thermal level See Section 3 2 31 3 2 15 Power Standby Control Each channel can be independently turned on and off 3 2 16 Signal Mute The output signal of each channel can be independently muted This function produces a minimum 60 dB of attenuation 3 2 17 Polarity Inverter The input signal polarity of each channel can be independently inverted 3 2 18 Input Signal Fader Each input signal can be adjusted under software control The gain range is 20dB to 100dB in 0 5 dB steps Each analog Audio Input has two faders with these functions e Trim the Analog Audio Input signal before the Input Router e Trim the Analog Audio Input signal after the Input Router 3 2 19 Amplifier Information At startup the module extracts several useful items of information about the host amplifier These include manufacturer model date code and serial number This information is stored in the software system inventory and is displayed on the software control panels
23. NICS WE RECOMMEND THAT YOU CONTACT YOUR SUPPLY AUTHORITY BEFORE CONNECTION Operation Manual Date of Issue Jan 1 2006 page 3 Crougrr by HARMAN Table of Contents Important Safety Instructions oo ec cecscsteseseecetesesteseseseeteseseanens Declaration Of Conformity occ cccccccesestesseetetesesteseseeteteseeeanens 1 Welcome nnnannnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn 2 2 install Your AMTIOUITET ces castesaesesisscivticscovetics areevencaiiicaseucecdeecs 2 3 Ensure Propet GOOUIMG csxsssinstesecosssosteisunatarnaichsnbsatetersntdoes 2 4 Front Panel Controls and Indicators 2 5 Back Panel Controls and Connectors 2 6 CobraNet and Control Module Connectors Indicators and Controls 2 Choose Input Wire and Connectors 2 8 Choose Output Wire and Connectors 29 Audio WINNI cis iii stag cinder tect lsasebeial 2 9 1 Dual 8 4 MOd6 ou cececeeceeeeeeeteeeesteseeneeeeneeeenens 2 9 2 Dual 70V Mod cesscesscescecscesseesseessessecsteaseeseeseesseen 2 9 3 Bridge Mono 16 8 Mode 2 9 4 Bridge Mono 100V Mode 2 10 Network Wiring Rules 2 WAN GOW OTK WINING ssrin 2 12 Audio and AUX Wiring s s s 213 Connecta AC MANNS en 2 14 Startup Procedure page 4 CTs Multi Channel Power Amplifiers PEPEE AEE NE EIE ES T S E 8 Network and CobraNet Basics cccccccssccececess 8 1 Network Basics 8 2 A Closer Look at CobraNet 8 2 1 Fast Ethernet 3 2 CobraNet and Control Module Features 4 Advanced Features AUE AU
24. NT Figure 4 1 AUX Output Control of a Relay Operation Manual The AUX output has two enhanced modes Error Reporting and Flash Preset In Error Reporting mode the AUX port can be set up to change state when any selected error clip thermal amp fault load impedance and AC line level is detected With this feature the AUX output of each amplifier can be wired to a separate light ona panel at the control location to indicate whether the amplifier is Or is not in error Generally the AUX output inverter is used for such a system This way if the panel light is on the operator knows all is well If it is off the operator knows the amplifier has an error or that it is not powered The other enhanced AUX output mode is Flash Preset This mode allows remote indication of the selected preset In this mode the AUX output will flash a number of times equal to the selected preset followed by a pause By using the Change Preset AUX input mode and the Flash Preset AUX output mode this allows a remote panel to function as a preset controller The panel would contain a simple light and pushbutton connected to the AUX output and input See Figure 4 2 AUX CONNECTOR REMOTE A tee eee es eyes eyed Figure 4 2 Wiring a Remote Preset Selector Crougrr by HARMAN 4 1 2 AUX Input In its basic input mode the AUX input allows an external input source to be detected by the software This input can be a temperature sensor door closure
25. R S INFORMATION PLEASE PRINT First name Middle initial Last name Company Mailing address City State Zip Code Country E mail address Phone include area code Fax MODEL SERIAL PURCHASE DATE e g 118000 CDi1000 PCC 160 e g 8000000000 mo day yr ff E l looo l looo Product purchased from Business Individual Country Comments page 41 Crougrr by HARMAN THIS PAGE INTENTIONALLY LEFT BLANK page 42 CTs Multi Channel Power Amplifiers Operation Manual Operation Manual CTs Multi Channel Power Amplifiers Crouwil by HARMAN Crown Audio Factory Service Information Shipping Address Crown Audio Factory Service 1718 W Mishawaka Rd Elkhart IN 46517 PLEASE PRINT CLEARLY SRA If sending product to Crown factory service Model serial Number Purchase Date PRODUCT RETURN INFORMATION lf warranty is expired please provide method of payment Proof of purchase may be required to validate warranty PAYMENT OPTIONS have open account payment terms Purchase orderrequired PO o gt Y oSoSo o oo 0 COD Credit Card Information below is required however if you do not want to provide this information at this time we will contact you for the information when your unit is repaired Credit card information Type of credit card O Master Card O Visa O American Express O0 Discover Type of credit card account O Personal Consumer 0 Business Corporate Card EX ates
26. S Maintain proper polarity on output connectors Connect Channel 1 positive speaker load to Channel 1 positive terminal of amp repeat for negative Repeat each channel wiring as for Channel 1 Operation Manual Crougrr by HARMAN see the Crown Amplifier Application Guide available online at www crownaudio com for pin assignments for commonly used connector BRIDGE ee See types oo dB a 2 amp DUAL BRIDGE Output panel sag Eio shown with touch proof cover plate cH4 f cH3 removed ATAN Figure 2 9 System Wiring and Control Settings Dual Mode 8 4 Ohm Output panel shown with TET na touch proof cover plate removed Figure 2 10 System Wiring and Control Settings Dual Mode 70V page 11 Crougrr by HARMAN 2 Setup continued 2 9 3 Bridge Mono 16 8 Mode CAUTION Never change the position of A the Mode Switch while the amplifier power is on Typical analog input and output wiring along with level control and Mode Switch settings are shown in Figure 2 11 Make sure the Mode Switch is set to the Bridge 16 8 position INPUTS Connect input wiring only to the lower odd numbered channel pair OUTPUTS Connect the speaker across the positive terminals of each channel pair Do not use the negative terminals of the channel pair when the pair is being operated in Bridge Mono mode NOTE When operating the channel pair in Bridge Mono mode turn down full CCW the
27. age is found notify the transportation company immediately Only you can initiate a claim for shipping damage Crown will be happy to help as needed Save the shipping carton as evidence of damage for the shipper s inspection We also recommend that you save all packing materials so you will have them if you ever need to transport the unit Never ship the unit without the factory pack YOU WILL NEED not supplied e Input wiring cables e Qutput wiring cables Rack for mounting amplifier or a stable surface for stacking WARNING Before you start to set up your amplifier make sure you read and observe the Important Safety Instruc tions found at the beginning of this manual e nh 48 3 cm q 16 25 In y 41 3 cm 2 2 Install Your Amplifier CAUTION Before you begin make sure your amplifier is disconnected from the power source with the power switch in the off position and all level controls turned completely down counterclock wise Use a standard 19 inch 48 3 cm equipment rack EIA RS 310B See Figure 2 1 for amplifier dimensions You may also stack amps without using a cabinet NOTE When transporting amplifiers should be supported at both front and back CTs 8200 q 19 In p gt 48 3 cm lt 16 25 In gt 41 3 cm Figure 2 1 Dimensions Left CTs 4200USP CN Right CTs 8200USP CN page 6 CTs Multi Channel Power Amplifiers 2 3
28. al Signal indicator is flashing Signal Ready Speakers not connected Open circuit due to speaker failure Level control is down Fault Thermal There is a short on the amplifier output First disconnect your speakers Clp Power T from the affected channel s one by one Signal to determine if one of the loads is Ready 5 Daa shorted DC or excessive low frequency signal at the amplifiers output has enabled Speaker protection Key Off amp Flashing Off Flashing On sos Lit Operation Manual COU by HARMAN CONDITION Thermal indicator is Fault Thermal 7 flashing Clip POSSIBLE REASON Sag e The amplifier has become too hot for ey safe operation Check for loads less than 2 ohms and for excessive input levels Check for proper ventilation and proper mode switch setting Driving low impedance loads while in high voltage mode can cause overheating CONDITION All channel thermal Thermal indicators are flashing POSSIBLE REASON e Power supply thermal overload CONDITION No input signal a Signal indicator is not flashing even though Thermal er i audio is applied and channel is ready Ba Power X POSSIBLE REASON igna Ready XX Data e Input signal level is very low Brid i k e Input cables have become disconnected CONDITION Bridge LED is flashing POSSIBLE REASON e The mode switch was switched while the power was on page 25 Crougrr by HARMAN
29. are when making connections selecting signal sources and controlling the output level The load you save may be your own 3 Do not short the ground lead of an output cable to the input signal ground This may form a ground loop and cause oscillations 4 WARNING Never connect the output to a power supply battery or power main Electrical shock may result 5 Tampering with the circuitry or making unauthorized circuit changes may be hazardous and invalidates all agency listings and may also void the product s warranty 6 Do not operate the amplifier with the red Clip LEDs constantly flashing 7 Do not overdrive the mixer which will cause clipped signal to be sent to the amplifier Such signals will be reproduced with extreme accuracy and loudspeaker damage may result 8 Use caution when operating the amplifier with a 2 ohm load impedance on 1 channel Do not operate the amplifier with less than a 2 ohm load impedance per channel when driving more than 1 channel Due to the amplifier s output protection such a configuration may result in premature clipping speaker damage or a blown power fuse Remember Crown is not liable for damage that results from overdriving other system components CTs Multi Channel Power Amplifiers Operation Manual CTs Multi Channel Power Amplifiers 3 Operation continued 3 2 CobraNet and Control Module Features 3 2 1 Data Indicator An amber Data Indicator flashes wheneve
30. ble cause Incorrect wiring See Section 2 10 on network wiring Operation Manual 6 Specifications CTs Multi Channel Power Amplifiers Performance CTs 4200USP CN Crougrr by HARMAN The following specifications apply to all models in Dual 8 4 ohm mode with 8 ohm loads unless otherwise specified CTs 8200USP CN Frequency Response at 1 watt 20 Hz 20 kHz 0 5dB 0 5 dB Phase Response at 1 watt 10 Hz 20 kHz 35 35 Signal to Noise Ratio below rated power 20 Hz to 20 kHz 100 dB unweighted 100 dB unweighted Total Harmonic Distortion THD at 1 watt from 20 Hz to 20 kHz lt 0 05 lt 0 05 Intermodulation Distortion IMD 60 Hz and 7 kHz at 4 1 lt 0 05 lt 0 05 from 163 milliwatts to full bandwidth power typical Damping Factor 10 Hz to 400 Hz gt 180 gt 180 Crosstalk below rated power 20 Hz to 1 kHz gt 80 dB gt 80 dB Common Mode Rejection CMR 20 Hz to 1 kHz gt 50 dB gt 50 dB DC Output Offset Shorted input lt 5mV lt 5mV Input Impedance nominal balanced unbalanced 20 kilohms 10 kilohms 20 kilohms 10 kilohms Maximum Input Level before input compression 20 dBu 20 dBu Load Impedance Note Safe with all types of loads Stereo 4 8 and 25 ohms 70V 4 8 and 25 ohms 70V Bridge Mono 8 16 and 50 ohms 100V 8 16 and 50 ohms 100V Voltage Gain at maximum level setting 1 4V sensitivity 4 8 Ohm Operation 20 1 26 dB 20 1 26 dB 70V Operation 5
31. ch channel s input See Section 2 7 for more detail on audio wiring In System Architect the analog balanced audio inputs can be set up to act either as CobraNet backup an emergency override of CobraNet audio or as an audio input to the CobraNet network 2 Connect the AUX wiring if used See Section 4 1 for more information 2 13 Connect to AC Mains Connect your amplifier to the AC mains power source power outlet with the supplied AC power cordset First connect the IEC end of the cordset to the IEC connector on the amplifier then plug the other end of the cordset to the AC mains WARNING The third prong of this connector ground is an important safety feature Do not attempt to disable this ground connection by using an adapter or other methods Amplifiers don t create energy The AC mains voltage and current must be sufficient to deliver the power you expect Ifthe AC line voltage varies out of an acceptable range the amplifiers power supply turns off and the blue Power LED flashes The amplifier will turn back on when the AC line voltage returns to safe operating levels Figure 2 14 provides voltage limits for all amplifier AC voltage Crougrr by HARMAN configurations Also the amplifier must be run within the specified mains frequency requirements indicated on the amplifiers back panel label If you are unsure of the output voltage of your AC mains please consult your electrician The various models have t
32. ch proof cover plate covering the terminal strip by removing the screw which holds it in place LISTEN s ne LINK IN USE LINK IN USE mrt H l e NE t ACTIVITY CONDUCTOR ACTIVITY CONDUCTOR BRIDGE MODE REQUIRES 1 CONSECUTIVE CHANNEL DUAL T DUAL DE DUAL FAIRS ON THE SAVE E o A F CH 6 i CH 2 CH a l CH 1 O 120VAC m 1500 WATTS O 220 240 VAC 1950 WATTS 50 60 Hz l T 1 l ens cH7 c b oug DUAL H4 f ae E4 OUTPUTS i x Do BRIDGE pan BRIDGE page 8 USP CN Module Built into the amplifier this module allows connection to a CobraNet network Please see Section 2 6 for details Channel Level Controls One 21 position detented rotary potentiometer per channel ranging from infinity 70 dB to 0 dB attenuation Refer to Section 4 2 12 for precise dB attenuation increments for each detent Input Connectors Removable Phoenix style barrier connectors for balanced input Also can be used as a CobraNet input or a backup for Cobranet see Section 3 2 6 CH 8 CH 7 co dB 0 co dB 0 co dB 0 co dB 0 DUAL BRIDGE DUAL BRIDGE ae Ol he eet rra 70V 16 8 70V 16 8 8 47 l r 100V 8 47 r 100V CTs Multi Channel Power Amplifiers P Mode Switch Used on each consecutive pair of channels this four position switch is used to select the amplifiers mode of operation Dual 8 4 ohms Dual 70V Bridge Mono 16 8 ohms and Bridge Mono 100V IMPORTANT Be su
33. control fault indicators automatic high pass filtering DC protect 4 2 5 AC Under Voltage and Over Voltage AC under voltage and over voltage protection inrush Protection limiting and variable speed fans If the AC line voltage varies out of an acceptable range the amplifiers power supply turns off and the blue Power LED flashes The LED will continue to flash until the power has been cycled Figure 4 4 provides voltage limits for all amplifier AC voltage configurations Also the amplifier must be run within the specified mains frequency requirements indicated on the amplifier s back panel label If you are unsure of the output voltage of 4 2 9 Switching Power Supply Crown s new Switching Power Supply minimizes the os Note Attenuation per detent varies with amplifier s weight operating mode since gain varies with operating Typical non switching power supplies require large mode Attenuation amounts shown may vary heavy transformers in order to produce the required 6 power at the output stage These transformers must be large to absorb the substantial waste that occurs when operating at 50 to 60 Hz standard AC supplied by the power company 4 2 1 Thermal Level Control TLC If an amplifier channel starts to overheat the TLC circuit will engage that channel s input compressor By compressing the input the amplifier will not generate as much heat and will have a chance to cool down The degree of compression is pr
34. d within the United States of America For information on Warranty outside of the U S A please contact your local distributor 9 1 International and Canada Service Service may be obtained from an authorized service center Contact your local Crown Amcron representative or our Office for a list of authorized service centers To obtain service simply present the bill of sale as proof of purchase along with the defective unit to an authorized service center They will handle the necessary paperwork and repair Remember to transport your unit in the original factory pack 9 2 US Service service may be obtained in one of two ways from an authorized service center or from the factory You may choose either It is important that you have your copy of the bill of sale as your proof of purchase 9 2 1 Service at a US Service Center This method usually saves the most time and effort Simply present your bill of sale along with the defective unit to an authorized service center to obtain service They will handle the necessary paperwork and repair page 36 Remember to transport the unit in the original factory pack A list of authorized service centers in your area can be obtained from Crown Factory Service or online from http www crownaudio com support servcent htm 9 2 2 Factory Service Crown accepts no responsibility for non serviceable product that is sent to us for factory repair It is the owner s responsibility to ensure t
35. dBu to 50 dBu Attack Time Sets the attack time of the compressor The attack time is defined as the time it takes the compressor to attenuate the signal gain by 20 dB The range is from 1 millisecond to 0 1 second Release Time Sets the release time of the compressor The release time is defined as the time it takes the compressor to increase the signal gain by 20 dB The range is from 10 milliseconds to 10 seconds Compression Ratio Sets the compression ratio of the compressor The ratio is the relation between the amount of attenuation applied by the compressor verses the amount that the input signal is over the threshold The available settings are 2 1 to oe 3 2 24 Peak Voltage Limiter This limits the peak voltage output of the amplifier Four parameters control this limiter for each channel Enable Enables or disables this function Threshold Sets the level in absolute voltage which the limiter will allow from the amplifier The range is from 12 Vto 255 V Attack Time Sets the attack time of the limiter The attack time is defined as the time it takes the limiter to attenuate the output signal by 20 dB The range is from 1 millisecond to 100 milliseconds Operation Manual Release Time Sets the release time of the compressor The release time is defined as the time it takes the limiter to increase the output signal by 20 dB The range is from 10 milliseconds to 10 seconds 3 2 25 RMS Power Limiter This
36. e It allows reliable deterministic transmission of digital audio over a 100Base T Fast Ethernet network The amplifier operates as a networked device on a CobraNet network and interfaces digital audio from the network to the amplifier Fora more thorough discussion about CobraNet technology refer to section 8 2 and visit Peak Audio s CobraNet website at www cobranet info This section describes the amplifiers CobraNet control and monitoring features These features are accessed via the control software Please refer to the software documentation if you are unfamiliar with the software 3 3 1 CobraNet Module Parameters The internal CobraNet Network Interface Module contains several parameters for control and monitor of status of the CobraNet network and do not directly affect the control network These variables can also be controlled and monitored through the CobraNet network using CobraCAD or other industry standard SNMP enabled network management software CobraCAD is software that provides a GUI to design CobraNet networks It can be downloaded from www peakaudio com Operation Manual Conductor The Conductor is the device in a CobraNet network that acts as the master clock Other devices are called Performers Any CobraNet device can be configured to operate either as Network Conductor or a Performer e Active Indicator This indicator viewable in System Architect software reports the present Conductor status of th
37. e a little more difficult Some very low level and or low duty cycle signals may not adequately test the load Lab and situation testing have shown output levels as small 40 dB below rated amplifier output to be enough for most low impedance loads Higher impedance loads such as those used in lightly loaded 70V distribution lines may require signal level near 20 dB below rated output The Nominal Load Impedance control is used to optimize the system for the most accurate calculation of load impedance It should be set to the expected nominal or rated impedance of the normal load The high limit should be set for at least 2 times the expected nominal or actual measured load while the low limit should be set to 1 the expected nominal or actual measured load The following example calculates the SPL necessary for supervision of a typical 8 ohm system While the resulting 80 dB SPL 1 meter is definitely above conversation level it is not uncomfortable page 18 An 8 ohm example 30 mA into 8 ohms 0 007watt 8 ohm driver sensitivity 100dB for 1W 1 meter 0 007W 1W 20cB Required SPL for supervision test is 100dB 20dB 80dB SPL 1 meter 3 2 27 Typical Load Characteristics It is well known that the typical loudspeaker impedance is not the same for all frequencies This variance is due to the effect of electrical properties such as the expected increase in impedance at high frequencies
38. e device If the indicator is ON the unit is operating as the network Conductor When OFF the unit is operating as a Performer e Priority This parameter adjusts the priority level for becoming the Conductor When set to zero the amplifier will never function as the Conductor and when set to 255 it will always function as the Conductor The higher the priority number the more likely unit will act as the Conductor The Priority object is Stored in presets System Name This parameter can be set to any alpha numeric string of 30 characters or less It communicates a unique name for the particular device to a network The System Name object is stored in presets System Description This parameter is configured at the factory and is read only The intended use is to communicate a unique device description to a network System Location This parameter is user settable to any alpha numeric string of 30 characters or less The intended use is to communicate a unique description of the device location to a network This object is Stored in presets System Contact This parameter is user settable to any alpha numeric string of 30 characters or less The intended use is to communicate the designated contact person in case of service or other network issue to the network This object is stored in presets Crougrr by HARMAN Firmware Version This parameter is configured at the factory and is read only The intended use is to communicat
39. e ranges Refer the unit to an authorized Crown service center for fuse replacement Fault Thermal Clip Signal Ready Fadi CONDITION Power indicator is Thermal flashing Clip Power POSSIBLE REASON Signal Ready Data e The AC line voltage has dropped below 10 or has risen above 10 of the nominal line voltage of the power supply Bridge Refer to section 5 1 6 for specific voltage requirements Key Of amp Flashing CC Off Flashing sos Lit page 24 Power Data CTs Multi Channel Power Amplifiers vl CONDITION Fault indicator is on POSSIBLE REASON e The amplifier channel has stopped operating Return the unit to an authorized Crown Service Center CONDITION Distorted sound POSSIBLE REASON e Load is wired incorrectly or Dual Bridge mode switch is set incorrectly Check both Input is overloaded by a signal level that is too high Turn down your amplifier level controls or turn down the input signal until the clip light goes out e Thermal Level Control TLC is active Note If the signal sounds distorted even though the Clip LED is off the input signal is distorted Check gain staging and output levels of the mixer or preamp Operation Manual CTs Multi Channel Power Amplifiers 5 Troubleshooting continued Fault CONDITION No sound even though Thermal the amp has power Power LED is on without flashing and the amp is receiving an Clip input sign
40. e the presently loaded CobraNet module firmware version to a network MAC Address This parameter is configured at the factory and is read only The setting defines a unique IEEE802 recognized address for use with any Ethernet based network IP Address This IP address is for the CobraNet control ONLY It is used by SNMP agents such as CobraNet Disco to contro CobraNet specific functions This IP address should not be confused with the control system s IP address that is used to control and monitor the CobraNet module 3 3 2 CobraNet Input Routing CobraNet input routing includes the following controls CobraNet Receive Bundles The amplifier can receive four unique CobraNet Bundles RxA RxB RxC RxD Each Bundle includes an Active indicator to indicate whether the particular Bundle is being actively transmitted onto the network CobraNet Receive Channels Each CobraNet Bundle contains up to eight digital audio channels Each channel is selected at its respective transmitter to contain none 16 20 or 24 bit audio sample data A total of four or eight audio channels can be processed by the USP CN at any one time Any of the eight channels on a bundle can be can be routed to either of the four or eight processing channel inputs on the USP CN e Channel Label Each received digital audio channel can be assigned a user specified label to indicate intended use source or other information The label is stored in presets along wit
41. ects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Use the mains plug to disconnect the apparatus from the mains 16 WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE 17 DO NOT EXPOSE THIS EQUIPMENT TO DRIPPING OR SPASHING AND ENSURE THAT NO OBJECTS FILLED WITH LIQUIDS SUCH AS VASES ARE PLACED ON THE EQUIPMENT 18 THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE page 2 Wichtige Sicherheitsinstruktionen Instrucciones de Seguridad Importantes TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL A PR VENIR LE CHOC LECTRIQUE N ENLEVEZ PAS LES COUVERCLES IL N Y A PAS DES PARTIES SERVICEABLE A L INT RIEUR TOUS REPARATIONS DOIT ETRE FAIRE PAR PERSONNEL QUALIFIE SEULMENT PARA PREVENIR UN CHOQUE ELECTRICO NO RETIRE LAS CUBIERTAS SUPERIOR O INFERIOR NO EXISTEN PARTES QUE PUEDAN SER REPARADAS POR EL USUARIO AL INTERIOR REMITA EL SERVICICO AL PERSONAL TECHNICAL CALIFI CADO TO COMPLETELY DISCONNECT THIS EQUIPMENT FROM THE A CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS RISQUE DE CHOC LECTRIQUE N OUVREZ PAS CTs Multi Channel Power Amplifiers IMPORTANT CTs Series amplifiers require Class 2 output wiring Les amplificateurs de
42. ed for functions within the software Crougrr by HARMAN e Mute All This mutes the channels when the AUX input is active Likewise the Power Off Both function disables both channels during an active AUX input e AUX Input Inversion This control allows the low state to activate the selected function Normally the high state activates the selected AUX input function The AUX port provides a power supply for the AUX input This 15 VDC at 15 mA supply can be connected through a switch to the AUX input This allows a simple switch closure to operate the aux input without the need of an external power supply See Section 4 1 for details on using the AUX port 3 2 8 Listen Bus or Foldback The AUX port is also used for the Foldback connection Two pins of the connector provide a balanced line level audio output that can be selectively driven by either channel under System Architect software control 3 2 9 Preset Reset Switch The Preset Reset switch is a recessed pushbutton located between the Data and Preset indicators It is activated by a straightened paper clip or similar object This switch can be used to change presets restore settings to factory default or restore all the presets to the factory defaults During operations of the Switch the Data indicator flashes as an aid to the user To select a preset 1 Remove all audio input signals 2 With the amplifier powered up momentarily hold the preset Switch in for one flash o
43. er on three sides of the box 5 Record the SRA number for future reference The SRA number can be used to check the repair status 9 2 4 Packing Instructions Important These instructions must be followed If they are not followed Crown Audio Inc assumes no responsibility for damaged goods and or accessories that are sent with your unit 1 Fill out and include the Crown Audio Factory Service Information sheet in the back of this manual 2 Do not ship any accessories manuals cords hardware etc with your unit These items are not needed to service your product We will not be responsibility for these items 3 When shipping your Crown product it is important that it has adequate protection We recommend you use the original pack material when returning the product for repair If you do not have the original box please call Crown at 800 342 6939 or 574 294 8210 and order new pack material See instructions for foam in place shipping pack Do not ship your unit in a wood or metal cabinet 4 If you provide your own shipping pack the minimum recommended requirements for materials are as follows a 275 P S I burst test Double Wall carton that allows for 2 inch solid Styrofoam on all six sides of unit or 3 inches of plastic bubble wrap on all six Sides of unit b Securely seal the package with an adequate carton sealing tape c Do not use light boxes or peanuts Damage caused by poor packaging will not be c
44. f the Data indicator less than 2 seconds and then release 3 The amplifier will load the next preset in the defined preset range The range of presets is defined by the Maximum Preset and Minimum Preset controls Once the Maximum Preset is reached the next momentary depression of the switch will cycle the USP CN to the Minimum Preset 4 The Preset indicator will flash the number of the selected preset followed by a pause 5 Restore the audio input signals To restore the unit to factory default settings 1 Remove all audio input signals page 15 Cron by HARMAN 3 Operation continued 2 Hold the Reset Preset switch in for two flashes of the Data light longer than 2 seconds 3 The Data indicator will flash rapidly for a moment 4 Restore the audio input signals To restore the unit including presets to factory default settings 1 Remove all audio input signals 2 Hold the Reset Preset switch while applying power to the unit 3 The Data and Preset indicator will both light 4 Release the switch within 5 seconds before the Data and Preset indicators go out 5 The Data indicator will flash rapidly for a moment 6 Restore the audio input signals 3 2 10 User Presets The control settings for all the functions can be stored as presets A total of ten presets can be saved in the USP CN s nonvolatile memory Each preset can be named with a 30 character name describing its function which is also stored in
45. goc pos Eo Laptop CroOouUuJmnm by HARMAN Ethernet Networks are established through the use of either a hub or aswitch These devices are centralized in the network and transfer the Ethernet data from point to point Ethernet data is transferred in data packets that have addresses coded into their structure Hubs and switches decipher these addresses and route the data packets to the appropriate component Hubs do this by taking packets from any port and sending them out all other ports Switches on the other hand are more intelligent and examine each packet s address sending that packet only to the addressed component This results ina much more efficient data flow Communications between networks is allowed but requires the use of a special piece of equipment called an IP Router Figure 8 2 The router acts as a Gateway to allow this communication to exist Any data traffic that is to go to the other network is routed through the IP Router The CobraNet data is held behind but IP data goes through VENUE NETWORK jaa AAAI as a a a a ae Computer Computer Laptop Ln goo 7 i 8 8 Ems a E E l oOo m a Boo o f ET ee l El emmy T l IP Router 100Mb Switc
46. h Figure 8 2 Two Networks Connected by an IP Router l Wireless Access Point M l Z C l OX ot e page 33 Crougrr by HARMAN 8 Network and CobraNet Basics continued Each component has three identifiers that are used in the HiQnet system e Media Access Control MAC Address e Internet Protocol IP Address e HiQnet Address Let s explain each identifier Media Access Control MAC Address This is a physical address that specifies a specific physical network component This address is predefined during manufacture and cannot be modified No two network components have the same MAC address and each component is uniquely identified by its MAC address This 48 bit address is located on the outside of every HiQnet component and is shown in hexadecimal format as 6 two byte octets such as 00 0A 40 00 DC 2F Internet Protocol IP Address The IP address of a component is assigned during the setup of the network and identifies the IQ component to a larger audience Because the MAC address is limited to a single physical LAN communications between LANs is impossible solely through the use of the MAC address The IP address allows components and controllers on other networks to communicate with each other through the use of an IP Router as shown in Figure 8 2 EEE BESS SSS EEN A a m e Peper En Figure 8 3 A Star Ne
47. h the bundle number and receive channel information page 19 Cron by HARMAN 3 Operation continued 3 3 3 CobraNet Output Routing CobraNet output routing includes the following controls CobraNet Transmit Bundles The amplifier can transmit up to four unique CobraNet Bundles TxA TxB TxC TxD Each Transmit Bundle includes the following controls and monitor functions e Receiver Count This meter reports the number of CobraNet nodes actively receiving the Bundle being sourced to the network by this bundle e Transmit Priority This control adjusts the relative priority for the particular transmitter Higher numbers indicate a higher priority One may choose to increase the transmitter priority for an emergency page microphone in a heavily loaded network The Transmit Priority object is stored in presets page 20 CobraNet Transmit Channels Each CobraNet Bundle can contain up to eight unique digital audio channels Each channel is selected at its respective transmitter to contain none 16 20 or 24 bit audio sample data A total of 32 channels can be transmitted by a single USP CN at any one time however only 4 channels can be sent on up to four Bundles The CobraNet Transmit Channel object is stored in presets CTs Multi Channel Power Amplifiers Here are some features of CobraNet Transmit Channels e Output Amplifier Audio By sampling the actual output audio of the amplifier CobraNet allows remote access and mon
48. hat their product is serviceable prior to sending it to the factory Serviceable product list is available at http crownweb crownintl com crownrma For more information please contact us direct A Service Return Authorization SRA is required for product being sent to the factory for repair An SRA can be completed online at www crownaudio com support factserv htm If you do not have access to the web please call Crown s Customer Service at 574 294 8200 or 800 342 6939 extension 8205 For warranty service we will pay for ground shipping both ways in the United States Contact Crown Customer Service to obtain prepaid shipping labels prior to sending the unit Or if you prefer you may prepay the cost of shipping and Crown will reimburse you Send copies of the shipping receipts to Crown to receive reimbursement Your repaired unit will be returned via UPS ground Please contact us if other arrangements are required 9 2 3 Factory Service Shipping Instruc tions 1 Service Return Authorization SRA is required for product being sent to the factory for service Please complete the SRA by going to www crownaudio com support factserv htm If you do not have access to our website call 1 800 342 6939 extension 8205 and we ll create the SRA for you 2 See packing instructions that follow 3 Ship product to CROWN AUDIO FACTORY SERVICE 1718 W MISHAWKA RD ELKHART IN 46517 4 Use a bold black marker and write the SRA numb
49. he following under voltage limits and over voltage limits Under Voltage Over Voltage 100VAC CTs 8200USP 9OVAC 110VAC CN only 120 VAC units 108VAC 132VAC Figure 2 13 An Example of a Star Network 220V 230V 240V units 198VAC 264VAC 2 14 Startup Procedure Use the following procedure when first turning on your amplifier Turn down the level of your audio source 2 Turn down the level controls of the amplifier 3 Turn on the Power switch The Power indicator should glow 4 Turn up the level of your audio source to an optimum level D Turn up the Level controls on the amplifier until the desired loudness or power level is achieved 6 Turn down the level of your audio source to its normal range If you ever need to make any wiring or installation changes don t forget to disconnect the power cord page 13 Crougrr 3 Operation 3 1 Precautions Your amplifier is protected from internal and external faults but you should still take the following precautions for optimum performance and safety 1 Before use your amplifier first must be configured for proper operation including input and output wiring hookup Improper wiring can result in serious operating difficulties For information on wiring and configuration please consult the Setup section of this manual or for advanced setup techniques consult Crown s Amplifier Application Guide available online at www crownaudio com 2 Use c
50. ight channels in a 3U chassis and four channels in a 2U chassis e Selectable constant voltage 70V 100V or low impedance 8 4 ohm operation for each channel pair e Inthe unlikely event of a channel failure FIT Fault Isolation Topology circuitry isolates faults within affected channels e 35 Hz High Pass Filter 70 Hz in CTs 4200 is automatically inserted when the channel pair is set for constant voltage operation corner frequency may be changed as a service option e Comprehensive array of indicators including Power and Data along with Bridge Ready Signal Clip Thermal and Fault for each channel provide accurate diagnostics e Blue Power Indicator flashes if the amplifier shuts off due to an under voltage or over voltage condition on the AC mains e Advanced protection circuitry guards against shorted outputs open circuits DC mismatched loads general overheating under voltage or over voltage high frequency overloads and internal faults e Proven Crown AB B Multi Mod output topology e Continuously variable speed fans optimize cooling efficiency e Built in CobraNet and Control Module connects to a CobraNet network This allows a 100 Mbps Ethernet single plug solution for CobraNet audio and HiQnet control and monitoring e Analog audio inputs allow CobraNet network audio input CobraNet audio backup or a hardwire emergency override of CobraNet audio e 24 bit digital to analog conversion with 32 bit floa
51. ill limit the amount of CobraNet traffic and create unnecessary limitations in the network lf the amplifier is not connected to a network the CobraNet connector can connect directly to a computer s network adapter port using a crossover cable TX and RX pairs swapped 3 2 4 Link Activity Indicator The green Link Activity indicator is provided on the network connector to display the status of the Ethernet connection Whenever the module is properly connected to another functioning network port the indicator lights When the module detects the presence of network traffic the indicator flashes The Link Activity LED flashes for all network traffic while the Data LED flashes only for commands addressed to this USP CN Operation Manual 3 2 5 CobraNet In Use Conductor Indicator The indicator on the right side of each CobraNet RJ 45 connector turns ON if the port is in use i e the link is being used to transmit or receive active CobraNet traffic and will blink if the device is also the conductor the timing reference 3 2 6 Balanced Audio Inputs Located on the amplifier rear panel these removable barrier block connectors allow line level audio signals to be input to the USP CN The amplifier accepts line level analog audio signals in addition to the digital audio from the CobraNet network This analog audio can be used for one of three purposes e Backup of the CobraNet network audio In the unlikely event of a loss of CobraNe
52. itoring of each amplifier channel at the output of the amplifier CobraNet extends the Listen Bus or foldback feature found on other PIP modules to any network user allowing them to listen to the output of any networked amplifier from any location on the network e Balanced Audio Inputs Analog audio entering the Balanced Audio Inputs can be converted to digital and sent onto the CobraNet network This provides a very cost effective means of CobraNet input Operation Manual CTs Multi Channel Power Amplifiers 4 Advanced Features 4 1 Using the AUX Connector The AUX connector offers a means to tap some of the flexibility of Harman Pro System Architect It can be used to enable peripherals send a signal to another system component and send a line level audio signal of the amplifier s output The AUX connector is an RJ 11 type Pins 3 and 4 are used as a control output Pins 2 and 3 function as a control input Pin 5 is a voltage supply pin for use with the control input 4 1 1 AUX Output The AUX output provides a 15 VDC output current limited to 10 mA which can be switched on or off under software control In its basic mode the AUX output can be used to control auxiliary equipment To control AC line powered equipment the AUX output must actuate a relay The relay would then turn on the auxiliary equipment See Figure 4 1 AUX CONNECTOR 2 INPUT 4 3 SOLID STATE i RELAY 110 VAC AUXILIARY EQUIPME
53. khart Indiana 46517 U S A Telephone 574 294 8200 800 342 6939 North America Puerto Rico and Virgin Islands only Facsimile 574 294 8301 Technical Support 574 294 8124 Factory Service Internet htto Awww crownaudio com Operation Manual CTs Multi Channel Power Amplifiers Operation Manual THIS PAGE INTENTIONALLY LEFT BLANK Crougrr by HARMAN page 37 Crougrr by HARMAN THIS PAGE INTENTIONALLY LEFT BLANK page 38 CTs Multi Channel Power Amplifiers 10 Warranty Operation Manual CTs Multi Channel Power Amplifiers Operation Manual SUMMARY OF WARRANTY Crown International 1718 West Mishawaka Road Elkhart Indiana 46517 4095 U S A warrants to you the ORIGINAL PURCHASER and ANY SUBSEQUENT OWNER of each NEW Crown product for a period of five 5 years from the date of purchase by the original purchaser the warranty period that the new Crown product is free of defects in materials and workmanship We further warrant the new Crown product regardless of the reason for failure except as excluded in this Warranty Warranty is only valid within the United States of America For information on Warranty outside of the U S A please contact your local distributor ITEMS EXCLUDED FROM THIS CROWN WARRANTY This Crown Warranty is in effect only for failure of a new Crown product which occurred within the Warranty Period It does not cover any product which has been damaged because of any
54. limits the long term output power of the amplifier Four parameters control this limiter for each channel Enable Enables or disables this limiter Threshold Sets the average power level in watts which the limiter will allow from the amplifier channel The range is from 10 watts to 600 watts This level should be set to the connected loudspeaker s long term power rating Attack Time Sets the attack time of the limiter The attack time is defined as the time it takes the limiter to attenuate the output signal by 20 dB The range is from 1 second to 30 seconds Release Time Sets the release time of the compressor The release time is defined as the time it takes the limiter to increase the output signal by 20 dB The range is from 1 second to 30 seconds 3 2 26 Load Supervision The load supervision feature allows real time monitoring of the load connected to each amplifier channel When enabled the USP CN continuously monitors the amplifier output voltage and current and calculates the long term average load impedance The measured load impedance is compared against the user defined high and low limits If either limit is exceeded the status indicator and if enabled the System Architect Error Reporting functions alert the user of the problem There are six controls and two indicators for each channel Enable Enables or disables the load supervision function High Limit Sets the upper bound above which the system will rep
55. ltiple Star Network CTs Multi Channel Power Amplifiers 8 2 A Closer Look at CobraNet Licensed by Cirrus Logic CobraNet is a protocol firmware and hardware that lets you transmit digital audio over a 100Base T Fast Ethernet network This section provides an overview of CobraNet Peak Audio has provided a number of technical papers that describe CobraNet in detail These papers are available at www cobranet info 8 2 1 Fast Ethernet 100Base T Fast Ethernet 100Base T runs at 100Mbps Megabits per second It uses a hub or network switch to interconnect all network nodes components This forms a star network see Figure 8 3 In a star network all PCs are connected to a centralized hub or switch Messages are sent from the originating PC to the hub which then transmits the message either to the whole network or if a switched hub network switch is used to the destination device only In larger Fast Ethernet networks additional hubs concentrators and other network hardware are used to form a larger network as shown in Figure 8 4 Today commonly available networking cards are 10 100Base T capable which allows them to be used on either 10BaseT or 100Base T networks The maximum length of cable for CobraNet is the same as for Ethernet 100 meters over CAT 5 copper cable 2 kilometers over multimode fiber Proprietary Fast Ethernet via single mode fiber networks can reach even further Operation Manual CTs M
56. nel Power Amplifiers 2 Setup continued 2 10 Network Wiring Rules IMPORTANT Please read the wiring rules below before installing the wiring Connect each device to the network through its own cable in a Star Network Figure 2 13 Do not connect them in a serial fashion Make sure each device has its own Category 5 certified cable connecting it to a central concentrator most often a switch cone ANG Computer 100Mb Switch a m m m 00 00bSbSbb 03032324y ABEER Laptop Operation Manual 2 11 Network Wiring Use the cable to connect the Primary CobraNet connector to a 100 Mb port on the Ethernet switch that is used to form the CobraNet network For more detail see Section 3 2 3 We highly recommend that the CobraNet be a standalone or separate network LAN Crown strongly recommends the use of a 100 Mb Ethernet network for control and monitoring If network redundancy is required use a standard CAT5 cable to connect the Secondary CobraNet connector to a 100Mb port on the auxiliary CobraNet network HiQnet control is available over the CobraNet network using Harman Pro System Architect software The software can set up CobraNet audio routing and addressing 2 12 Audio and Aux Wiring 1 Connect the Audio Input Wiring The amplifier is equipped with removable barrier block connectors for ea
57. network used for CobraNet audio resulting in a single Category 5 connection for control monitoring and digital audio Figure 8 1 shows a typical TCP IP network TCP IP offers a number of advantages over other non network communications platforms o z E HA AAAAAA ANA VL SINS SS FFF FFI IAI ISIN Fie Computer FIFA AIGFOOIO IIIa CGO SOE Sao 100Mb Switch n Laptop Figure 8 1 A Typical TCP IP Network Operation Manual e The use of off the shelf networking hardware This technology makes use of network connectivity and hardware commonly used in the computer industry making it both low cost and readily available e Better Performance The capacity for real time display of meters is greatly enhanced through the use of the wide bandwidth network e Single connection for both CobraNet audio and control communications Gone are the days of multiple connections to a component for audio and control A single CAT5 connection handles it all some of the features of HiQnet include e Ability to quickly discover all components connected to the network e Synchronization of multiple control points on a network e Components on different Local Area Networks LANs through the use of an IP router Figure 8 2 e Component firmware upgrades via the network AUDIO NETWORK m FETA NO TARNE PIP Lite NON
58. ng EQ Lowpass EQ Variable Q from 0 1 to 35 Highpass EQ Variable Q from 0 1 to 35 Parametric EQ Variable Q from 0 1 to 35 All Pass 1st and 2nd order CTs Multi Channel Power Amplifiers All Pass filters provide no gain change to the output but provide a phase change at the selected frequency This corrects the phase relationship of the output without a gain reduction such as is found in other filters 3 2 29 Delay Due to the nature of DSP processing there is some inherent delay or latency within the system These delays are DSP processing 1 ms or 1000 us Digital to analog conversion 250 us Analog to digital conversion 250 Us Amplifier 100 us In addition to these unavoidable delays additional delay can be added to each channel Each channel is capable of 2 0 seconds of delay in 20 8 us increments Overall delay inherent delay coarse delay fine delay 3 2 30 Noise Generator A noise generator shared between channels allows noise to be mixed into the audio signal This is useful for noise masking applications and testing Each channel has the following controls e Noise On Off The channel s noise generator can be independently turned on e Noise Type Full spectrum white noise or pink noise e Noise Level A fader to allow the noise level to be controlled 3 2 31 Sine wave Generator A sine wave signal generator allows the mixing of a single tone into the audio signal Typical applications can be for the
59. nput Level 20 dBu ADC Conversion 24 bit 250 us latency page 27 COU by HARMAN 6 Specifications continued EE MEDINO a TUA U UN AM O LUT fewest A II A A P O TUT BENI LAUU UUW FUNE H Frequency Hz Figure 6 1 CTs 8200USP CN Typical Frequency Response 1 W 200 CTs Multi Channel Power Amplifiers CTs Multi Channel Power Amplifiers 6 Specifications continued 450 400 350 300 i 250 lt lt 2 200 ep D 150 D job Q 100 50 0 0 5K 10K 15K 20 K Frequency Hz Fi 4 CTs 82 P CN Typical Output I Fi 5 10K iok i w k OK igure 6 4 CTs 8200USP CN Typical Output Impedance vs Frequency Frequency Hz Figure 6 2 CTs 8200USP CN Typical Phase Response 1 W 50 180 60 160 140 70 120 dB Damping Factor page 28 100 80 60 40 20 100 1 00 10K 0 1K 2K 3K 4K 5K 6K 7K 8K 9K 10K e Hz Frequency Hz Figure 6 5 CTs 8200USP CN Typical Crosstalk vs Frequency Figure 6 3 CTs 8200USP CN Typical Damping Factor vs Frequency Operation Manual Operation Manual COU by HARMAN page 29 Crougrr CTs Multi Channel Power Amplifiers CTs Multi Channel Power Amplifiers Crouvgrr by HARMAN by HARMAN 6 Specifications continued 7 AC Power Draw and Thermal Dissipation CTs 4200USP CN MINIMUM GUARANTEED POWER in watts 0 1 THD 120VAC 60 Hz units Dual Mode Channels Driven O 4 2 O a a ee AC Power Draw and Thermal Dissipation 229 Pink n
60. oise 12dB crest factor bandwidth limited 22Hz to 22kHz Figure 6 1 CTs 210 Typical line impedance used 4200USP CN 70V 25 Ohm at 0 1 THD 245 Measurements made with 120VAC mains Line current figures for 230VAC units derived by multiplying 120VAC figures by 0 5 Minimum Bridge Mono Mode Data based on all channels driven Guaranteed Power Channel Pairs Driven _ SSS ee ee ee CTs 4200 16 Ohm Load orem uberis Label Thermal Dissipation 100V 60 Ohm at 0 1 THD 7207 At Idle 8 4 Ohm mode 70 Oo 7 239 Constant Voltage full bandwidth power ratings support 100 Hz 20 kHz due to automatic high pass filters At Idle 70 100V mode 114 0 114 389 98 1 8th Power Pink Noise 8 Ohms Ch 200x4 CTs 8200USP CN MINIMUM GUARANTEED POWER In watts 0 1 THD 120VAC 60 Hz units just at clip 4 Ohms Ch 260x4 8 Ohms Bridge 520x2 7 8 3 9 639 134 505 1722 434 Channels Driven ee anne Ee es a es ees ae 70V Ch 220x4 1084 ee 20 Hz 20 khz 100V Bridge 2202 a T OO T 1 3rd Power Pink Noise 8 Ohms Ch 200x4 230 Typical of program material 16 Ohms Bridge 400x2 160 220 tiie vere opine e ae 1005 2236 Figuee2cts ZOV 25 Ohm at 01 THD 200 230 ee ee 7 3 xX Power OO ikaz oe ee 8 Ohm 540 16 Ohm 440 100V 50 Ohm at 0 1 THD 185 250 Constant Voltage full bandwidth power ratings support 100 Hz 20 kHz due to automatic high pass filters Operation Manual Operation Manual page 30 page 31 C
61. oportional to the amount of overheating If the channel becomes too hot for safe operation even after full TLC limiting the channel will shut off and the Thermal Indicator for that channel will flash brightly to alert the user that a state of thermal stress or overload has cause the channel to shut down By contrast switching power supplies can operate with a much smaller and lighter transformer because they first convert the AC up to a much higher frequency thereby your AC mains consult your electrician reducing waste Under Voltage Over Voltage 100VAC 9OVAC 110VAC The power supply is voltage specific allowing use in regions using 120V 60Hz 220V 50Hz 230V 50Hz 240V 50Hz and 100V 50Hz AC mains 10 84 13 90 12 62 4 2 10 Mode Switch If an amplifier channel requires service the correspond els net 132VAC Each consecutive pair of channels has one four position i i ing Fault indicator will illuminate to alert the user of this 220V 230V switch that selects the amplifiers mode of operation The condition If this occurs return the amplifier to the Crown 240V units 198VAC 264VAC Switch positions are factory or to an authorized Crown service center i 4 2 3 Fault Isolation Topology FIT Over Voltage Limits for Various Amplifier e Dual mode for 70V constant voltage operation Crown s new FIT Fault Isolation Topology design Bridge Mono mode for 8 or 16 ohm operation isolates channel specific faults and preven
62. or input overload Thermal Indicator Red LED one per channel flashes when the channel has shut down due to thermal stress or overload If the power supply goes into thermal overload all channel J LEDs will flash Fault Indicator Red LED one per channel illuminates when the amplifier output channel has stopped operating Fault Thermal Clip Signal Ready Figure 2 3 CTs 8200USP CN Front Panel Crougrr by HARMAN Ventilation Grille Front to rear forced airflow Data Indicator Yellow LED flashes whenever a command addressed to the module is received A similar LED is on the back panel and the two LEDs flash simultaneously Power Indicator Blue LED indicates amplifier has been turned on and AC power is available Indicator also flashes if the amplifier shuts off due to an under over voltage condition on the AC mains Power Switch Amplifier is on when the switch is in the IN position CTs 8200 BCDEF HI J page 7 rown 2 Setup continued 2 5 Back Panel Controls and Connectors Note CTs 8200USP CN is shown Some CTs 4200USP CN features are in different locations K AC Power Cord Connector Standard IEC type 320 inlet 120V models 15 amp 220 240V models 10 amp Voltage is indicated above IEC inlet L Output Connectors One four pole terminal strip for every two channels with touch proof cover Accepts up to 10 AWG terminal forks To connect outputs first remove the tou
63. ort a high error status Crougrr by HARMAN Low Limit Sets the lower bound below which the system will report a low error status Nominal Load Impedance Sets the expected average impedance for the connected load This value determines the output signal level required for the test This parameter is also used by the average power limiter to determine the expected power threshold See Section 3 1 29 Report Error to Network Enables Error Reporting to send an error report via the network so that high and low load conditions are reported to the software Report Error to Aux Enables and high or low load error to be reported by the AUX output See Section 4 1 1 Test Indicator This indicator is active when the amplifier output signal is sufficient to allow load impedance calculation and test verification Low Normal High Indicator This indicator shows the present Status of the load impedance with respect to the user defined high and low limits Z Average Monitor Reports the actual calculated average load impedance in ohms Its range is from 0 ohms to 250 ohms Load Supervision Applications The Load Supervision feature can be used to monitor the amplifier load in real time with almost any program material Average load impedance is calculated as a function of amplifier output voltage and current The system requires approximately 20 30 mA of average amplifier output current for adequate supervision This allows ty
64. ortantes pour lors op rations de maintenance ATENCION CON ESTOS S MBOLOS El tri ngulo con el s mbolo de rayo el ctrico es usado para alertar al usuario de el riesgo de un choque el ctrico Pe PEP PRE e Reorient or relocate the receiving antenna e Increase the separation between the equipment and receiver e Connect the equipment into an outlet on a circuit different from that to which the y Oo receiver is connected El tri ngulo con el signo de admiraci n es usado para alertar al usuario de instrucciones importantes de operaci n o man tenimiento e Consult the dealer or an experienced radio TV technician for help Operation Manual CTs Multi Channel Power Amplifiers Crown International Inc DECLARATION of CONFORMITY COMPLIANCE QUESTIONS ONLY Sue Whitfield 574 294 8289 Issued By Crown International Inc 1718 W Mishawaka Road Elkhart Indiana 46517 U S A Crougrr by HARMAN swhitfield crownintl com European Representative s Name and Address David J Budge 10 Harvest Close Yateley GU46 6YS United Kingdom Equipment Type Commercial Audio Power Amplifiers Family Name CTs Family Model Names CTs 4200USP CN CTs 8200USP CN EMC Standards EN 55103 1 1997 Electromagnetic Compatibility Product Family Standard for Audio Video Audio Visual and Entertainment Lighting Control Apparatus for Professional Use Part 1 Emissions EN 55103 1 1997 Magnetic Field Emissions Annex A
65. ou may use terminal spade lugs or bare wire for your output connectors see Figure 2 8 CTs amplifier terminal strips accept up to 10 AWG terminal forks which fit over a 8 screw For best results Crown recommends Panduit part PV10 10LF L or equivalent terminal spade lug Screw spacing is shown in Figure 2 8 To connect outputs first remove the touch proof cover plate covering the terminal strip by removing the screw which holds it in place To prevent the possibility of short circuits wrap or otherwise insulate exposed loudspeaker cable and connectors Also a touch proof cover plate which covers the terminal strips is provided to help prevent short circuits The cover plate should be reinstalled after connecting outputs Suggested below are guidelines to select the appropriate size of wire based on the distance from amplifier to speaker Check with local code as this may vary Distance Wire Size up to 25 ft 7 6 m 16 AWG 26 40 ft 7 9 12 2 m 14 AWG 41 60 ft 12 5 18 3 m 12 AWG Over 60 ft 18 3 m 10 AWG CAUTION Never connect the speaker return to the chassis of the amplifier or damage to the amplifier may result CAUTION Never use shielded cable for output wiring iF l CTs Multi Channel Power Amplifiers BALANCED LINE UNBALANCED LINE A cH om gt SOURCE INPUT Figure 2 6 Balanced Input Connector Wiring See the Crown Amplifier Application Guide available online at www crownaudio
66. overed under warranty Using your foam in place shipping pack Note The foam in place packing is molded so that there is only one correct position for your product 1 Open carton and lift center cushion leaving both end cushions in place CTs Multi Channel Power Amplifiers 2 Carefully place your product with the product s front panel facing the same direction as arrows indicate 3 Reset center cushion down over top of product s chassis The foam in place packing was molded to accommodate different chassis depth sizes If your product s chassis does not completely fill the foam in place cavity you may use a soft but solid packing material such as paper or bubble wrap behind the chassis 4 Enclose the completed Crown Audio Factory Service Information form or securely attach it to the outside of carton and re seal the shipping pack with a sturdy carton sealing tape 9 2 5 Estimate Approval Approval of estimate must be given within 30 days after being notified by Crown Audio Inc Units still in the possession of Crown after 30 days of the estimate will become the property of Crown Audio Inc 9 2 6 Payment of Non Warranty Repairs Payment on out of warranty repairs must be received within 30 days of the repair date Units unclaimed after 30 days become the property of Crown Audio Inc If you have any questions please contact Crown Factory Service Crown Factory Service 1718 W Mishawaka Rd El
67. pically low average output power levels of less than 1 2 watt with most loads The maximum load impedance for reliable system performance is limited to about 50 ohms Higher impedances can be measured but may require higher amplifier output levels for reliable operation page 17 Cron by HARMAN 3 Operation continued Most amplifier load systems can be configured and supervised by following these steps 1 Configure your audio system using a known good load then enable the Load Supervision feature 2 Provide typical program material at a level high enough to light the test indicator 3 Run the system at this level until the average impedance stabilizes This may take seconds to minutes depending on level duty cycle etc 4 Set the nominal impedance at the measured value average This optimizes the supervision algorithm for voltage and current levels versus the actual load Note a higher nominal setting will require higher output levels 5 Set the high limit at twice average and the low limit at one fourth nominal These limits are somewhat arbitrary but should be a good starting point 6 Let the system run for extended periods using any and all typical program material 7 Adjust the high low limits if necessary to account for any variance in average measured impedance 8 Enable error reporting if desired This procedure should work well for most applications However some applications can b
68. r a command addressed to the module is received To assist with troubleshooting an option that forces the Data Indicator to remain lit is available through the software In addition the locate feature in System Architect will cause the Data Indicator to blink rapidly to help you identify the unit Another Data Indicator is on the amplifiers front panel and it lights simultaneously with the module s Data Indicator 3 2 2 Preset Indicator A green Preset indicator signals the number of the current preset if active by continually flashing a series of flashes equal to the current preset number followed by a pause A preset is considered active if the USP CN settings match those in the selected preset If a change is made to any setting then the preset is considered inactive and the indicator stops flashing 3 2 3 CobraNet Network Connectors The Primary and Secondary CobraNet RJ 45 connectors can simultaneously interface to the 100 Mbps HiQnet network While the Primary CobraNet connector is the main connection to the network the Secondary connector is the backup or redundant connection to the network If the Primary connection fails due to cut wire failed network switch etc this port is automatically enabled and ready to receive the network data within a few seconds Make connections with a standard CAT5 cable to a network switch port Crown strongly recommends the use of switches and not hubs in the network Hubs w
69. r is a network component It connects to the audio control monitor network using standard 100Mb Ethernet hardware With this protocol an audio system can be interconnected using standard off the shelf 100 Mb Ethernet components switches Network Interface Cards and cables The Crown CTs 4200USP CN and CTs 8200USP CN include SmartAmp features and 3rd generation DSP based components Their SHARC DSP processor gives the user an enormous amount of digital signal processing Audio routing faders meters polarity amp mute input compressors filters multimode output limiters error reporting and load monitoring are all available A built in noise generator and sine wave generator provide noise masking and test capabilities In addition the amplifier allows the transport of real time digital audio via CobraNet over the same 100Mb Ethernet network that is used for amplifier control and monitoring This provides a simple to install single plug solution for control monitoring and full bandwidth audio distribution The amplifier can function independently from the network control Once the processing is configured the unit s non volatile memory allows the amplifier to continue to function with no external control Please take the time to study this manual so that you can obtain the best possible service from your amplifier CTs 4200 1 1 Features e Crowne Switching Power Supply for reduced weight e High power density with e
70. re to power off the amplifier before change the Mode A switch setting If this is not done the Bridge light will flash to indicate that the power must be cycled off and back on to reset the mode Q Cooling Vents Front to rear forced airflow CH 4 CH 3 ATTENUATION q co dB 0 co dB 0 Vv n DUAL BRIDGE DUAL BRIDGE 70V 16 8 70V 16 8 8 47 r 100V 8 47 r 100V Y S N NI SQV LLS9t NI LUWHY14 I o INIWdINDI DINOYLIITA a umos MODE SWITCH 0000 000000 N S Figure 2 4 CTs 8200 USP CN Back Panel Shown with Touch proof Cover Removed Operation Manual CTs Multi Channel Power Amplifiers 2 Setup continued Operation Manual 2 6 CobraNet and Control Module Connectors Indicators and Controls A AUX Connector AUX input AUX output and Foldback See Sections 3 2 7 3 2 8 and 4 1 B Preset Indicator Signals the number of the current preset if active by flashing a series of flashes equal to the current preset number See Section O22 C Reset Preset Switch Activated by inserting a small item such as a paper clip this switch is used to change presets restore settings to factory default or restore all the presets to the factory defaults During operations of the switch the Data indicator flashes as an aid to the user See Section 3 2 9 D Data Indicator Flashes when the amplifier receives a valid command that is addressed to the amplifier
71. rougrr by HARMAN 7 AC Power Draw and CTs Multi Channel Power Amplifiers Thermal Dissipation continued AC Power Draw and Thermal Dissipation Pink noise 12dB crest factor bandwidth limited 22Hz to 22kHz Typical line impedance used Measurements made with 120VAC mains Line current figures for 230VAC units derived by multiplying 120VAC figures by 0 5 Data based on all channels driven CTs 8200 Rated Line Current Line Current Watts TE Load BOET 120VAC 230VAC Thermal Dissipation At Idle 8 4 Ohm mode At Idle i OOV mode 1 8th Power Pink Noise Typical of program material just at clip 1 3rd Power Pink Noise Typical of program material with severe clipping page 32 70 Oo 70 29 6o a ee 16 Ohms Bridge oa 4 Ohms Ch a 8 Ohms Bridge p ep ee a A EA 70V Ch 9230 100V Bridge coe 8 Ohms Ch aac aes 16 Ohms Bridge cam 4 Ohms Ch 70V Ch zs Operation Manual CTs Multi Channel Power Amplifiers 8 Network and CobraNet Basics This section provides additional information about HiQnet or Network basics For more information about any of these topics contact Crown Technical Support For AUX connector wiring see Sections 3 2 7 and 4 1 8 1 Network Basics HiQnet is a network based protocol that can control and monitor networked components over a common TCP IP network For components that have CobraNet capability HiQnet can control and monitor these components over the same Ethernet
72. s rie de CTs exigent des cables de sortie de classe 2 CTs Reihe Verstarker verlangen Klasse die 2 Produktionsverdrahtung Los amplificadores de la Serie CTs requieren de un cableado de salida Clase 2 MAGNETIC FIELD CAUTION Do not locate sensitive high gain equipment such as pre amplifiers directly above or below the unit Because this amplifier has a high power density it has a strong magnetic field which can induce hum into unshielded devices that are located nearby The field is strongest just above and below the unit If an equipment rack is used we recommend locating the amplifier s AC MAINS DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY OPERABLE POUR DEMONTER COMPL TEMENT LEQUIPEMENT DE L ALIMENTATION GENERALE DEMONTER LE CABLE D ALI MENTATION DE SON RECEPTACLE LA PRISE D ALIMENTATION RESTERA AISEMENT FONCTIONNELLE PARA DESCONECTAR COMPLETAMENTE EL EQUIPO DEL SUMINSTRO ELECTRICO DESCONECTE EL CABLE DE ALI MENTACION DE LA TOMA DE CA LAS PATAS DEL CONECTOR DEL CABLE DE ALIMENTACION DEBERAN MANTENERSE EN in the bottom of the rack and the preamplifier or other sensitive equip ment at the top FCC COMPLIANCE NOTICE This device complies with part 15 of the FCC rules Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 this device must accept any interference received incl
73. slot is determined by the assigned bundle priority Higher bundle priorities receive lower numbered positions and are transmitted first 8 2 5 Repeater Networks CobraNet can operate on repeater networks or switched networks Repeater networks use low cost Ethernet hubs Switched networks use network switches Hubs send all data packets to all connected nodes That is all devices in the network receive data even the Unicast data Switches send specific packets to specific devices Crougrr by HARMAN Up to 8 full loaded Bundles 64 audio channels are allowed ona repeater network More Bundles may be allowed if they are loaded with less than the full eight audio channels Generally a repeater based CobraNet network must carry only CobraNet data to guarantee reliable transmission of audio packets Use of repeater networks is not recommended 8 2 6 Switched Networks A more complex CobraNet network can be built using Ethernet Switches Switches do not simply broadcast each and every packet to all nodes Instead they check each incoming data packet to determine its destination and very quickly transmit the data to only that destination port This allows for more network data flow more Bundles and more audio channels In effect each network port in an audio component has 100MB of bandwidth The network can be as large as 100MB times the number of ports on the network Another advantage of switched networks is full duplex
74. structions 5 Do not use this apparatus near water 6 Clean only with a dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufac turer 12 Use only with a cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way Such as power supply cord or plug is damaged liquid has been spilled or obj
75. t audio to the module the module automatically Switches over to the balanced audio inputs e Emergency override If an audio signal appears at the analog inputs the module switches to that signal e CobraNet network audio inputs The amplifier can act as a CobraNet audio input source by converting the balanced audio input signal to CobraNet 3 2 7 Aux Input Output Connector An RJ 11 connector provides three functions AUX output AUX input and Foldback The AUX output is a multifunctional contro output that delivers 15 VDC limited to 15 mA It can be configured in two modes e Manual mode The output is simply controlled with a command from the software e Error reporting mode The AUX out is active when the module detects an error Each error source Thermal Clip Load Amp Fault and Line Voltage can be individually enabled to activate the AUX output when the error conditions are met An inversion control allows the AUX output functionally to be inverted for the manual and error reporting modes The inversion control is ignored for flash preset mode The AUX input is a two state input with a high state defined as voltage between 4 and 15 VDC The low state is defined as voltages between 0 and 1 6 VDC It has a 10K input impedance The AUX input can be configured in several modes e None In this mode the module makes no changes to its operation However the AUX input status can be monitored through the control software and us
76. ting point DSP processing Crougrr by HARMAN CTs 8200 e Upto 18 assignable filters per channel e Over 2 seconds of delay available per channel e Input compressors and output limiters for each channel e Noise generator for noise masking e Sine generator e Load supervision e Full error reporting e Firmware upgrades via the network e 10 user selectable presets e Reliable FLASH memory backup of all parameters e Three Year No Fault Fully Transferable Warranty completely protects your investment and guarantees its specifications 1 2 How to Use This Manual This manual provides you with the necessary information to safely and correctly setup and operate your amplifier It does not cover every aspect of installation setup or operation that might occur under every condition For additional information please consult Crown s Amplifier Application Guide available online at www crownaudio com Crown Tech Support your system installer or retailer We strongly recommend you read all instructions warnings and cautions contained in this manual Also for your protection please send in your warranty registration card today or register online at www crownaudio com And save your bill of sale it s your official proof of purchase page 5 Crougrr by HARMAN 2 Setup 2 1 Unpack Your Amplifier Please unpack and inspect your amplifier for any damage that may have occurred during transit If dam
77. ts them from ea w w 1 2 3 5 7 10 11 12 13 14 15 16 17 18 19 affecting remaining channels If a CTs multi channel amp 4 2 6 Power Fuse i Bridge Mono mode for 100V constant voltage ss T ow T w T is powering multiple zones and a channel fails the other A fuse protects the amplifier from excessive AC current operation l zones continue to operate FIT makes the CTs 4200USP draw Be sure to turn off the amplifier before changing 2ouicw 000 000 f ow CN and CTs 8200USP CN the most trustworthy multi E dh the Mode switch setting channel amplifiers in the business 4 2 7 Inrush Limiting A soft start circuit in the power supply minimizes the Ag Riga ever COUMOruB Anan Dennen amplifier s current draw during power on 4 2 11 Bridge Mode Indicator This yellow LED indicates when the amplifier s mode Switch is set to the Bridge position Each consecutive pair of channels has one Bridge LED page 22 Operation Manual Operation Manual page 23 Crouorr by HARMAN 5 Troubleshooting Fault Thermal CONDITION Power indicator is off Fault Thermal POSSIBLE REASON Clip Power e The amplifier has lost AC power Signal Ready Data amp Bridge e The amplifier is not plugged into the power receptacle Clip Signal e The amplifiers Power switch is off mien e The amplifier output level is so high that the power supply fuse has blown Verify that input levels and output impedances are within saf
78. twork page 34 This allows the network designer to isolate network traffic from each other For example when using wireless devices to control HiQnet components the bandwidth limitation of wireless devices will not allow them to reside on the same network with CobraNet As a result the use of an IP router and a separate network allows the wireless controllers to access the IQ components through the router using IP addressing The IP address appears as four numbers 0 255 separated by periods such as 192 168 0 1 HiQnet Address HiQnet or TCP IQ components will be addressed with a unique number from 1 to 64 000 and are assigned within the software The Subnet Mask is four numbers 0 255 separated by periods For example a subnet mask of 255 255 25 0 and an IP address of 192 168 0 127 says that all IP addresses in that LAN are in the IP address range of 192 168 01 to 192 168 0 255 If a controller is on a different network than the audio components communications must occur through an IP router discovery requires the use of broadcast Ethernet data packets onto the network These broadcast commands cannot be done through an IP router therefore a Discovery Proxy is required The establishment of this proxy is done in by naming the IP address of a known component on the component network as the Discovery Proxy In System Architect it is done in Tools gt Options gt Network Settings gt Manage Network Connections Figure 8 4 A Mu
79. uding interference that may cause undesired operation CAUTION Changes or modifications not expressly approved by the party responsible for BUEN ESTADO complicance could void the user s authority to operate the eugipment WATCH FOR THESE SYMBOLS EN NOTE This equipment has been tested and found to comply with the limits for a Class B e rer ae triangle is used to alert the user to the risk of digital device pursuant to part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference in a residential installation This equip ment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instruction manual may cause harmful interference to radio com munications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television recep tion which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures The exclamation point triangle is used to alert the user to important operating or maintenance instructions REGARDEZ CES SYMBOLES La triangle avec le sigle foudre est employ e pour alerter l utilisateur au risque de d charge lectrique Le triangle avec un point d exclamation est employ e pour alerter l utilisateur d instruction imp
80. ulti Channel Power Amplifiers 8 Network and CobraNet Basics continued 8 2 2 Audio Specs Sample rate CobraNet can handle sample rates of 48 kHz or 96 kHz but PIP cards work only at 48 kHz They cannot receive audio from devices operating at 96 kHz Bit depth Set each channel to transmit 16 20 or 24 bit audio data as desired Latency The transmitter and receiver buffering required for reliable transmission is selectable between 1 33 2 66 and 5 33 ms 64 128 and 256 samples 8 2 3 Bundles and Audio Channels You will be assigning all audio channels to groups called Bundles for transmission over the CobraNet network Bundles were formerly called Network Channels A bundle can carry up to 8 audio channels Up to eight bundles can be sent ina 100 Mbps line depending on the signal s bit depth and sampling rate The usual assignment is 8 channels at 20 bits You can use fewer channels per bundle but maximum size bundles are suggested for the most efficient use of network bandwidth If 24 bit data is desired then only 7 audio channels can be loaded into a single Bundle In System Architect you create audio connections between sending devices transmitters and receiving devices receivers For example a mixer could be a transmitter and a power amp could be a receiver You assign each connection a Bundle number The Bundle number indicates which devices are communicating with each other Also in System Architect you
81. untry and the port of entry in the United States including the return shipment and all taxes duties and other customs fees for such foreign shipments HOW TO OBTAIN WARRANTY SERVICE You must notify us of your need for warranty service within the warranty period All components must be shipped in a factory pack which if needed may be obtained from us free of charge Corrective action will be taken within a reasonable time of the date of receipt of the defective product by us or our authorized service center If the repairs made by us or our authorized service center are not satisfactory notify us or our authorized service center immediately DISCLAIMER OF CONSEQUENTIAL AND INCIDENTAL DAMAGES YOU ARE NOT ENTITLED TO RECOVER FROM US ANY INCIDENTAL DAMAGES RESULTING FROM Crougrr by HARMAN ANY DEFECT IN THE NEW CROWN PRODUCT THIS INCLUDES ANY DAMAGE TO ANOTHER PRODUCT OR PRODUCTS RESULTING FROM SUCH A DEFECT SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION OR EXCLUSION MAY NOT APPLY TO YOU WARRANTY ALTERATIONS No person has the authority to enlarge amend or modify this Crown Warranty This Crown Warranty is not extended by the length of time which you are deprived of the use of the new Crown product Repairs and replacement parts provided under the terms of this Crown Warranty shall carry only the unexpired portion of this Crown Warranty DESIGN
82. utputs AUX CONNECTOR TO BALANCED INPUT Figure 4 3 Listen Bus Wiring page 21 Crougrr by HARMAN 4 Advanced Features continued NOTE For more information about these Crown amplifier features please visit the Crown website at www crownaudio com 4 2 4 High Pass Filter A fixed 35 Hz 70 Hz in CTs 4200USP CN high pass filter per channel pair is automatically inserted when the CTs Multi Channel Power Amplifiers 4 2 8 Variable speed Fans Continuously variable speed fans direct the airflow CTs Multi Channel Power Amplifiers 4 Advanced Features continued 4 2 12 Channel Level Control The signal level for each input can be attenuated ATTENUATION in dB Crougrr by HARMAN through the amplifier for cooling accurately by adjusting the 21 step Level Detent ian m Control see Section 2 5 Figure 4 5 shows the Pie 8 Ohm amount of attenuation in dB for each detent 100V V 0 am ro m 3 n mo 3 5s on ao s 8s ar aa 86 30983 za as e x 2m f 1 7 5s t9 02 f o oa swa az 1 o 2a 8 1420 o o a pe o B o t a te ed mode switch is set to either of the constant voltage settings The high pass filter corner frequency can be set to 70 Hz or bypassed with a service option 4 2 Protection Systems Your Crown amplifier provides extensive protection and diagnostic capabilities including thermal level

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