Bogen X300 audio amplifier
Contents
1. 2 7 OPERATION ENERVANT EENEN KEENER 8 9 Front Controls amp Indicators 8 Rear Controls Sc Indicators 8 TROUBLESHOOTING 10 SPECIFICATIONS 11 LIMITED WARRANTY EXCLUSION OF CERTAIN 12 Introduction Bogen s Black Max amplifiers deliver on what professional sound installers need most Power and Reliability Power With three different models X600 X450 and X300 the Black Max series provides 2 independent channels of amplification at 600W 450W 300W per channel into 70V constant voltage speaker loads safely and securely Located on the rear of the amplifier are the Level Controls Low Cut Filter Switch and pluggable input terminal strip for each amplifier channel These amplifiers are powerful with total system power of 1200W 900W and 600W with both channels driven but they are also compact using up only 2 rack spaces 3 1 2 in a standard 19 rack Reliability and Functionality Driven by a conservatively rated toroidal power transf2. be wired together daisy chain to allow for controlled sequential power up A pluggable screw terminal strip is provided for easy installation 11 Input Sensitivity Switch Allows the unit to reach full power at either line level input 1V or low level input 0 1 One per channel 12 High Impedance Balanced Inputs Pluggable 3 position screw terminal strips allow for easy installation and provide convenient connections to high impedance balanced inputs One per channel 13 Input Level Controls Continuously variable input level controls One per channel Installation Mechanical Components Front Casting Snap Slots 1 Rack Ears Prior to installing the amplifier into 19 rack you will need to attach the rack ears Remove and save the 6 front most cover screws on each side panel of the amplifier Position the rack ears as shown and attach using the 6 screws 2 Dust Filter Insert the dust filter into the fan grille before attaching the fan grille to the amplifier Filter Maintenance Dust filters are provided with the Black Max amplifier to reduce the build up of dust on the heat sinks Periodic clean ing should be done when there is a noticeable build up of dust on the filters To clean the filters remove them from the grilles and wash vacuum or tap them out Promptly replace them Caution fan blades are accessible when the grille cover and filter are removed
3. speakers are correct Do not ground the output of either set of out puts Doing so will cause the amplifier to go into protect mode shutting down operation of the affected channel Note The and indicators are mirrored on A and B outputs Be sure to make the correct connections Earth Ground Terminal CLASS 2 WIRING ACCEPTABLE The earth ground terminal is provided as a convenient means to con nect to the amplifier s chassis AC ground if necessary DO NOT con nect the earth ground terminal to the terminals of either output No damage will occur if this is done but the amplifier will go into protect mode and shut down the affected channel Inputs Balanced Input Connections Balanced input connections are used when the BLACK MAX INPUT source device provides a balanced output signal signal and ground G This type of con Source aT nection is desirable when operating in electrically Equipment SHIELD noisy environments where long input cable runs are needed or to ensure the lowest noise opera i tion If compatible with the source device this type G of connection is recommended Unbalanced Input Connections When the source device provides only an unbal anced output signal and ground the input should BLACK MAX INPUT be wired with inp
4. 8500 Fax 201 934 9832 www bogen com
5. Be careful not to place your finger or other objects into the fan 3 Fan Grille To attach the fan grilles first slide the tabs on the wider end of the grille A in to the notches in the front center casting of the amplifier Snap the other end of the grille B in to the snap slots Check that the grille is securely in place To remove pry the end of the cover closest to the rack ears up until the snap tabs disengage Installation Ventilation The Black Max amplifiers were designed to be placed on a table or rack mounted For rack mounted applications the amplifiers can be stacked one on top of the other for maximum use of the rack space available without any extra empty rack spaces between them An open air space of at least 4 must be provided at the front air intakes of the amplifier and the rear exhaust must have at least 4 between itself and obstructions to ensure adequate cooling This applies whether rack or table mounted Care should also be taken to ensure that the front intake air is not considerably warmer than the ambient air tem perature Mount the amplifiers low in the rack so that heat dissipation from other equipment does not warm the amplifier s intake air Rack Mounting Rack ears are included with the amplifier to allow mount ing in 19 racks Attach the rack ears as shown in the Mechanical Components section If any feet have been attached to the bottom of the amplifier remove them Load the amplifier into the
6. AR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED TO THE MAXIMUM EXTENT ALLOWABLE BY LAW Bogen s liability arising out of the manufacture sale or supplying of products or their use or disposition whether based upon warranty contract tort or otherwise shall be limited to the price of the product INNO EVENT SHALL BOGEN BE LIABLE FOR SPECIAL INCIDENTAL OR CONSEQUENTIAL DAMAGES INCLUDING BUT NOT LIMITED TO LOSS OF PROFITS LOSS OF DATA OR LOSS OF USE DAMAGES ARISING OUT OF THE MANUFACTURE SALE OR SUPPLYING OF PRODUCTS EVEN IF BOGEN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR LOSSES Some States do not allow the exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to you This warranty gives you specific legal rights and you may also have other rights which vary from State to State Products that are out of warranty will also be repaired by the Bogen Factory Service Department same address as above or call 201 934 8500 The parts and labor involved in these repairs are warranted for 90 days when repaired by the Bogen Factory Service Department All shipping charges in addition to parts and labor charges will be at the owner s expense All returns require a Return Authorization number For most efficient warranty or repair service please include a description of the failure 12 2008 BOGEN COMMUNICATIONS INC 50 Spring Street Ramsey NJ 07446 USA Tel 201 934
7. Black Amplifier X300 X450 amp X600 Models Installation and Use Manual 2005 Bogen Communications Inc All rights reserved 54 2063 01D 0910 Notice Every effort was made to ensure that the information in this guide was complete and accurate at the time of printing However information is subject to change Important Safety Information WARNING To Reduce The Risk of Fire Or Electric Shock Do Not Expose This Apparatus To Rain Or Moisture Always follow these basic safety precautions when installing and using the unit Wk WN gt Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water The apparatus shall not be exposed to dripping or splashing and no objects filled with liquids such as vases shall be placed on the apparatus Clean only with dry cloth DO NOT block any ventilation openings Install accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 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 are provided for your safety If the provided plug does not fit into your outlet consult an electrici
8. an for replacement of the obsolete outlet Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Only use attachments accessories specified by the manufac turer Unplug this apparatus during lightning storms or when unused for long periods of time 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 objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped Domestic and International Listings UL and C UL Listed IMPORTANT CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO PREVENT THE RISK OF ELEC TRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL The lightning flash with arrow head symbol within an equilat eral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magni tude to constitute a risk of elec tric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instruc tions in the
9. at greatly reduces the power consumption of the amplifier after it has been idle no audio activity for more than 3 minutes Any audio activity present at the input ae will power up the amplifier instantaneously and noiselessly so that there is no loss of audio The Sleep Switch is located on the rear of the unit The sleep feature is activated by setting the switch to the AUTO position Setting the switch to the OFF position will inhibit the amplifier from ever entering sleep mode Power Sequencing Switch The setting of the Power Sequencing Switch on the rear of the Black Max amplifier determines how the amplifier will power up When the switch is set to the OFF position the amplifier will power up and down convention ally when the front Power Switch is turned ON and OFF To use the sequencing feature built into the amplifier the Power Sequencing Switch must be placed in the ON position on a slave amplifier The slave amplifier will now power up when it receives the proper trigger through the terminal strip wiring see Sequential Turn On section for prop er wiring of the power sequencing terminal strip With the Power Sequencing Switch in the ON position placing the front Power Switch in the ON position will not result in the amplifier turning on It will instead remain in a standby state until triggered through the sequencing feature Power Status Indicator POWER OFF No Power A Power Status Indicator is provided on the rea
10. d of delay between units Turning off the first amplifier causes all amplifiers to turn off Package Contents Black Max Amplifier Model X600 X450 or X300 2 Rack Ears for Mounting 2 Filters and Grilles Instruction Manual 4 Rubber Feet amp Screws 2 Three position 1 Four position Terminal Strips BOGEN BLACK MAX ChA ChB wr xGOO SIGNAL 7OVolt Dual Channel l sms Power Amplifier LO JU JU N we aa af eel hn 1 Status Indicators The Status LEDs are multi purpose indicators one for each channel Green Amplifier is on and operating normally Amber Amplifier is in low power consumption Sleep Mode Red Amplifier has protected itself due to a fault condition Signal Indicators These illuminate green when signal is present at the output one for each channel 3 Limit Indicators These indicators illuminate amber when excessive signal levels or very low impedance output loads cause output distortion to exceed a few percent Under such conditions a built in Clip Limiting circuit activates and reduces input signal levels to protect both amplifier and speaker loads One for each channel Power Switch Circuit Breaker Magnetic circuit breaker controls AC power t
11. e Turn on the first amplifier in the chain All others will fol low in sequence with a 1 second delay between them Power Down of Sequenced Amplifiers When the first amplifier in the chain of sequenced amplifiers is switched off all other amplifiers will also switch off imme diately Troubleshooting Sequencing Problems If an amplifier in the chain does not have its front Power Switch set to ON it will not power up However all other amps that follow that amplifier will continue to sequence If an amplifier in the chain does not have its Power Sequencing Switch in the ON position it will break the daisy chain It will in effect become a second master ampli fier controlling all amps that follow it In this case if the Power Switch for this amp is switched off the sequencing will stop at that amplifier If this amplifier s Power Sequencing Switch is set to ON then all amplifiers following it will have already begun to sequence Should an amplifier in the sequence shut off either by tripping its circuit breaker or by someone turning the Power Switch OFF only that amplifier will lose power All units that follow will remain powered up If however AC power is removed from an amplifier by unplugging the power cord all other amps following it will immediately power down An amplifier in the chain going into or coming out of low power sleep mode will have no effect on the group Front Controls amp Indicators Power Switc
12. h The Power Switch for the Black Max amplifier is located on the front of the unit Press the I side of the switch to turn the unit ON The amplifier will begin its power up process once turned the amplifier is set up for power sequencing see the section on power sequencing the amplifier may not begin its power up process but rather wait in a standby state until it receives a sequence trigger The Power Switch is also the amplifier s circuit breaker Should the break er trip simply place it in the OFF position and then back to ON to reset the breaker Note If the Power Sequencing Switch is in the ON position but the wiring is not properly configured the unit will appear dead Review the Sequential Turn On section for proper wiring Front Indicators ChA ChB The front of the Black Max amplifier contains 3 different types of indicators ur for each channel LIMIT When illuminated it indicates a condition in which the amplifier is limiting and automatically reducing signal level to reduce the overload con dition Limiting result of speaker load impedances that are too low input signals that are too high which drive the outputs beyond their oper ational ranges SIGNAL When illuminated it indicates that there is signal at the output STATUS Illuminates in three different colors to indicate current opera tional status of the amplifier Green Indicate
13. literature accompa nying the appliance Contents Page INTRODUCTION ccccssssscssssssssssessssesssscssssssessesssssecssseesessesssssaesssssesseesssasssseesessesssseesees 1 Package Contents a AR les 1 PANEL DESCRIPTIONS cccsscssssssssssesssscssnsesssresssrsessseesssseesssesssessssesessesesoseesees 2 3 Black Max Front n a e a e eaa ches 2 Black Max aiai 3 INSTALLATION 220 0100474125 4 4 4000 640000 000 020016 000010 00011000 011006000060010000680688000080000 0 4 5 Mechanical Components a a aaan eaaa i 4 scnssosssouecosesensdacssesseess siuesvanssesedesensebesd osbusseenunsdescessdenausdtecnesstessdssarsete ties Rack Mounting Rear Rack Mounting ss iiscicsscsciscsccicsiscsiesecsetescsseduscsesiesessssessesie sdtissssbeustbenstscdestossdussesadensdsedesseacuscassvedecssea heen 5 Table uceuca 5 CONNECTIONG cccocsssssssrsssccscseessseesscccsssenessseesssseesssesessseessseessesensessescsscesssessooesees 6 Speakers EEEa ESA 6 a 6 E E A E N E ST 6 iiaii 7 Sequential
14. nput Sensitivity Switch not set correctly Status LED is green Signal LED is green Limit LED is off Status LED is green Speaker transformers saturating at low frequencies Low Cut Signal LED is green filter off need additional Hi Pass filtering Limit LED is amber on or e Below minimum load rating on output flashing Exceeding maximum power output rating DC level at signal input Load impedance too low Amplifier speaker output is short circuited Amplifier too hot check for proper ventilation clearances Status LED is red green cycling Poor electrical connections at input Input cable routed near AC cables power transformer other EMI radiating devices Status LED is green Electrically noisy devices operating on the same AC circuit Signal LED is green Poor equipment grounding Ensure that all AC safety grounds are connected Make sure that all components in audio chain are tied to the same ground 20A line cord 15A line cord 20 Hz 40 kHz lt 0 5 THD Connector 1667 BTU Hr 1537 BTU Hr 4195 BTU Hr 17 W x 3 1 2 H x 18 1 4 D Product Weight 46 b 44 b 41 b RF DC Low frequency Thermal Low impedance Circuit Breaker Short Circuit Special Features Sequential Turn On Circuitry defeatable Sleep Mode defeatable Back Slope AC Voltage regulation Toroidal Power Transformer Input Sens Input Select Both channel
15. o the amplifier Fan Air Intake and Grilles Air intakes for 2 independent variable speed cooling fans Each responds as needed to keep the amplifier cool while reducing dust build up Removable fan grilles are provided to allow access to the dust filters for cleaning Black Max Rear Panel A CLASS 2 WIRING ACCEPTABLE PEPEE E B BLACK OF 60H2 426 BOS wo ma Os CH B INPUT SI POWER _ OFF No Power AMBER Stand By Active AUDIO AMPLIFIER 06 10 ELECT 4 C US PAT NO 6 388 906 120 60 Hz COMMUNICATNS INC 12A RAMSEY 0 JERSEY 1 Speaker Terminals Connects to 70V constant voltage speaker loads One set for each amplifier section Accepts up to 10 AWG wire or spade lugs for speaker system connections Ground Terminal Provides convenient access to earth ground 3 Automatic Sleep Mode Allows the unit to automatically put itself into a sleep mode when there has been no input activity for more than 3 minutes In sleep mode the amplifier s idle power is greatly
16. ormer these amplifiers are built for solid performance with low distortion and a high slew rate The amplifiers require little maintenance and cleaning as internal electronic components are located outside of the forced air stream flow Front mounted fan filters provide easy removal and cleaning Black Max amplifiers have a variety of electronic protection circuits including overcurrent DC voltage and thermal circuits A special Clip Limiting circuit continuously monitors the amount of distortion in the output signal and reduces input levels as the amplifier approaches clipping Back Slope AC Voltage Stabilization Bogen s unique voltage stabilization circuitry regulates the AC energy supplied from the power toroid This improves both system performance and reliability despite varying AC supply conditions An energy conserving sleep mode defeatable with instant on return signal operation reduces wasted heat pro duction in paging systems with intermittent use In addition large output heat sinks and dual independently con trolled high output variable speed fans provide superior cooling and quiet operation while reducing dust accumu lation A simple and reliable sequential turn on feature minimizes in rush current from the AC power mains When mul tiple Black Max amplifiers are daisy chained together for sequential turn on the first amplifier in the series will con trol the powering up of the other amplifiers with approximately 1 secon
17. quipment the input should be set for 1V When operating with low level source equipment the input should be set for 0 1V PROBLEM CONDITION CAUSE Amplifier not plugged Rear Power Status LED is off lt AC outlet dead UNIT APPEARS DEAD NO FRONT STATUS LED SEQUENCING NOT FUNCTIONING CORRECTLY NO SOUND DISTORTED SOUND INTERMITTENT OPERATION NOISE HUM e Power Switch OFF Breaker Power Switch tripped Turn off then turn back on e Power Sequencing Switch set wrong Check Sequential Turn On section for proper configuration Rear Power Status LED is amber Master amplifier ON Rear Power Status is green slave amplifiers in chain not AC power to amplifier powering ON Rear Power Status is OFF Master amplifier ON Rear e Power Switch is OFF on slave amp Power Status is green Breaker Power Switch tripped slave amplifiers in chain not Turn off then turn back powering ON Rear Power e Rear Power Sequencing Switch is not ON Status is amber Error in Sequencing wiring between amplifiers e Level Controls turned down e No signal from source CH B Input Select not set or wired properly Status LED is green Signal LED is off Status LED is green Signal LED is green Limit LED is off e Poor broken speaker wiring e Defective speakers e Input signal level too high Poor speaker connections e Low Cut Switch set to Flat I
18. r of the amplifier The Black STATUS AMBER Stand By GREEN Active Max amplifier has different states of powering up depending on whether power sequencing is used or not The Power Status Indicator provides 3 different status indications Not Lit Indicates that the unit is not plugged in or is not being supplied AC power at the line cord Amber Indicates that the unit is in standby state where it is being sup plied with AC power at the line cord but it has either 1 not received the sequencing trigger that will allow it to change to the fully powered state if the Power Sequencing Switch is set to ON or 2 the front Power Switch has not been turned ON if the Power Sequencing Switch is set to the OFF position Green Fully powered the unit has either 1 received the sequencing trigger if the Power Sequencing Switch is set to the ON posi tion or 2 the unit s front panel Power Switch has been turned ON if the Power Sequencing Switch is set to the OFF position CH B Input Select Switch Determines whether the amplifier s output channel B sources its input 2 signal from B BAL INPUT or A BAL INPUT connectors gea Note When set to IN A B BAL INPUT connector and CH B Input Sens Switch are not active but CH B level control and Low Cut Switch are active Input Sensitivity Switch 0 1V INPUT Each input has a user selectable sensitivity switch When operating SENS 1V with standard line level source e
19. rack and secure it to the rack with appropriate hardware not included Rear Rack Mounting Optional accessory not included Rear of Amplifier For greater rear support when rack mounting a Black Max amplifier the RPK86 Rack Mounting Kit can be attached to the rear of the amplifier by following these steps 1 Remove and save the three rear most cover screws from the chassis side 2 Position the rack attachment as shown 3 Replace and tighten the three cover screws to secure the rack attachments 4 Repeat on opposite side of amplifier Table Mounting Feet are provided with the amplifier to allow it to be placed on tabletop Attach the included feet to the bot tom of the amplifier as shown Attachment of the rack ears to the unit is optional and purely aesthetic Connections Speakers 70V Transformer Coupled Speakers CLASS 2 WIRING ACCEPTABLE 4 Black series was designed to drive only 70 constant voltage type speaker loads The use of low impedance speakers may cause the amplifier to engage its protection circuits and shut down or limit ampli fier function The speaker terminals can accept up to a 10 AWG wire or spade lug and have integral clamping plates which make wiring easi B OES er The polarity of each set of speaker outputs A amp B is indicated with sign Use these indicators to ensure that the phasing of the
20. reduced The amplifier immediately and noiselessly returns to its full powered state when a signal is detected at an input Flush switch actuators reduce tam pering 4 CH B Input Select Switch Allows output Channel B to source its input signal from either A BAL INPUT or B BAL INPUT 5 Lo Cut Filters Roll off frequencies below 60 Hz 2nd order to prevent saturation of speaker transformers Flush switch actuators reduce tampering One per channel high pass 6 Fan Exhausts Cooling air outlets for independent variable speed cooling fans One per channel 7 Line Cord AC mains input line cord Note The X600 requires a 20A 125V AC power receptacle because its maxi mum current requirements exceed the capacity of a typical 15A receptacle The 20A receptacle is a NEMA 5 20R style 8 AC Power Status Indicator Indicates the AC power status of the Black Max amplifier When the indicator is not lit no AC power is applied to the line cord When lit amber power is applied to the line cord but no sequential trigger has been received to place the amplifier into a fully powered up state or power switch is OFF When lit green the amplifi er is fully powered 9 Power Sequencing Switch Turns power sequencing ON or OFF so that an amplifier can be controlled by either its front circuit breaker switch or by another Black Max amplifier Flush switch actuators reduce tampering 10 Power Sequencing Inputs Multiple Black Max amplifiers
21. s driven at nominal line voltage 120V AC 60 Hz The X600 requires 20A 125V AC power receptacle because its maximum current requirements exceed the capacity of a typical 15A receptacle The receptacle is a NEMA 5 20R style right 11 Limited Warranty Exclusion of Certain Damages Bogen Black Max amplifiers are warranted to be free from defects in material and workmanship for three 3 years from the date of sale to the original purchaser Any part of the product covered by this warranty that with normal instal lation and use becomes defective as confirmed by Bogen upon inspection during the applicable warranty period will be repaired or replaced by Bogen at Bogen s option provided the product is shipped insured and prepaid to Bogen Factory Service Department 50 Spring Street Ramsey NJ 07446 USA Repaired or replacement product will be returned to you freight prepaid This warranty does not extend to any of our products that have been subjected to abuse misuse improper storage neglect accident improper installation or have been modified or repaired or altered in any manner whatsoever or where the serial number or date code has been removed or defaced THE FOREGOING LIMITED WARRANTY IS BOGEN S SOLE AND EXCLUSIVE WARRANTY AND THE PUR CHASER S SOLE AND EXCLUSIVE REMEDY BOGEN MAKES NO OTHER WARRANTIES OF ANY KIND EITHER EXPRESS OR IMPLIED AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PAR TICUL
22. s that the amplifier is operating normally Amber Indicates that the amplifier is in Sleep mode Red Indicates a fault condition and that the amplifier has disconnected the output load as a safety precaution Rear Controls amp Indicators 4 6 Level Controls Use the rear mounted Level Controls on the Black Max amplifier to adjust output volume of each channel independently 0 10 Lo Cut Switch The Low Cut Filter allows a low frequency roll off starting at 60 Hz to be introduced into the signal path preventing the speakers from receiving too much low frequency content The Low Cut Filter Switch should be turned ON when using typical inexpensive transformer coupled cone type speak ers found in paging systems LO CUT The Black Max amplifier is a direct coupled amplifier which means that 60Hz there are no output transformers used to deliver the 70V audio to the speakers Because of this the Black Max amplifier has a flat frequency response down to and below 20 Hz This extended low frequency opera tion can be troublesome for some transformer coupled speakers used in 70V audio systems Relatively inexpensive transformers used in some speak ers cannot handle frequencies below 60 Hz When frequencies lower than this are applied to these speakers transformers they can saturate causing distortion and high instantaneous power consumption OFF ON Sleep Switch The Black Max amplifier includes a sleep mode feature th
23. the XMT connections of one amp to the RCV con nections of the next amp as shown in the diagram This pat power Rit So Sequence Power tern is continued until all the desired amplifiers are connect switch in OFF position ed last amplifier the chain has no connections its g AMP 1 XMT terminals and the first amplifier has no connection to 5 its RCV terminals 5 Master Note The RCV and XMT terminals have both polarity and number indicators In daisy chaining the amplifiers the same connection pattern is used Pin 4 XMT of the previous amp to Pin 2 RCV of the next amp and Pin 3 XMT ee a hme of the previous amp to Pin 1 RCV of the next amp srr a Switch Settings The position of the Power Sequencing Switch of the Black Max is important in sequencing setup The master amplifier s Power Sequencing Switch MUST be set to OFF By setting the switch to OFF this amplifier will turn on and off direct ly by its front Power Switch All other amplifiers in the chain MUST have their Power Sequencing switches in the ON position so that they respond to the sequencing signals All 0 slave amplifiers MUST have their front Power Switch set to the ON position with the exception of the master amplifier AMP 2 Slave Sequence Power switch in ON position POWER 2 2 AMP 3 Slave POWER SEQUENCING To Begin the Power Up Sequenc
24. ut shorted to ground G So rce The unbalanced signal s shield wire is connected to Equipment ADD ground and the signal hot wire is connected to the SHIELD terminal Since unbalanced connections do not provide the same amount of noise immunity that a CI i balanced connection does the connection distances WIRE SHORTS should be made as short as possible TERMINAL TO TERMINAL AC Power 20A AC Receptacle The X600 line cord requires a 20A 125V AC power receptacle because its maximum current require ments exceed the capacity of a typical 15A recepta cle The 20A receptacle is a NEMA 5 20R style Sequential Turn On Operation Black Max amplifiers contain a sequential turn on feature that is designed to turn on a bank of Black Max amplifiers one at a time in sequence with approximately 1 second between each amplifier This type of sequencing of power is necessary in large systems where the in rush current of all the system amplifiers turning on at once would over load the AC mains supplying the system The first amplifier in the chain will act as the master amplifier controlling the power up for the group When it is switched on it will initiate the power up sequence To prepare wire multiple Black Max amplifiers for sequential turn on operation do the following Preparation amp Wiring Turn off all amplifiers and unplug from AC The amps should be wired together in a daisy chain fashion Wire
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