Classe Audio CA-2200 Stereo Amplifier User Manual
Contents
1. Although either approach will yield excellent performance you might consider the first option for two reasons First signal quality degrades more easily when transmitted as a combination of both high voltage and high current suggesting that speaker cables should be kept as short as practical Second high quality amplifiers use massive power supplies which inevitably radiate some degree of magnetic fields Ideally one would separate these fields from sensitive source components by a reasonable distance If it is more convenient for you to place the amplifier in an equipment rack along with your other components we suggest placing it at the bottom of the rack well away from your source components and preamplifier This location will also be more stable than placing such a heavy component near the top of a rack which might make it top heavy Note that adequate clearance for the AC cord and connecting cables must be left behind the CA 2200 We suggest leaving eight inches 20 cm of free space behind your power amplifier to allow all cables sufficient room to bend without crimping or undue strain Your Class power amplifier generates a certain amount of heat in the course of normal operation Be sure to allow six inches of clearance above it and three inches to each side to allow heat dissipation through air circulation The vents on both the bottom and the top of the CA 2200 must be kept free from any obstruction which would reduce th2. Owner s Manual LASSE zm Power Amplifier WARNING TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRICAL SHOCK DO NOT REMOVE COVER NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric 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 instructions in the literature accompanying the appliance tromagnetic Compatibility and LVD Low Voltage Directive standards of the European Com munity C q Marking by the CE symbol shown left indicates compliance of this device with the EMC Elec NOTICE All of us at Class take extreme care to ensure that your purchase will remain a prized investment We are proud to inform you that all Class components have been officially approved for the European Community CE mark This means that your Class product was subjected to the most rigorous manufacturing and safety tests in the world The CE mark certifies that your purchase meets or exceeds all European Co
3. Printed in Canada 020405
4. extensive listening tests Special Design Features All Class analog amplification stages are based on circuits that have been extensively optimized over many years of continuous development By starting with excellent circuit designs and working with them over the years we are able to discover the many small refinements that add up to superlative performance in a variety of applications Altering a voltage here or using a slightly different part there may make all the difference between solid and absolutely outstanding performance This level of refinement only comes with a great deal of experience and is not available to those who flit from one trendy notion to the next It accounts in no small measure for both the consistency of sonic performance among Class products as they are all based on similar analog gain stages and for the consistently excellent reviews those products receive by owners and reviewers alike Excellent measured performance is to be expected in world class products and Class products deliver that performance However experience has shown that technical excellence alone is insufficient to guarantee subjectively musical results For this reason all Class products are laboriously fine tuned during the development process by carefully controlled listening tests Our ears are still some of the finest laboratory test instruments available and nicely complement more traditional engineering test equipme
5. or disconnected from the AC mains and using high quality interconnecting cables make the appropriate connections with the balanced or single ended connectors as configured in Step 3 Make sure all the connections are snug even if it means gently squeezing the outer shell of the RCA with pliers and reinserting it to tighten the connection Make your speaker connections Make the connection between the output terminals of the amplifier and your loudspeakers using high quality speaker wires Connect the black terminals on the amplifier to the black terminals on your speaker and the red terminals on the amplifier to the red terminals on your speaker If bi wiring run a total of four conductors between each amplifier channel and its corresponding loudspeaker two separate leads one for the bass and the other for the mids and treble Make sure that no wires cross between the red and black terminals at either end Make sure all the connections are snug and cannot be easily wiggled free but do not overtighten them If you can give the speaker wires a reasonable tug without movement they are snug Further tightening will not make a better connection and taken to the extreme may damage the connectors Caution 6 Double check all your connections We understand that this step sounds redundant but it is worth the extra minute or two it might take just to ensure that all connections a
6. setting of your power amplifier may not be changed by the user There are no user serviceable parts within the unit Please refer any problems to an authorized Class service center If the AC mains voltage indicated on your power amplifier is incorrect please contact your local authorized Class dealer or distributor The CA 2200 can easily be powered by a normal 15 ampere AC mains line If other devices are also powered from the same AC line their additional power consumption should be taken into account warm up break in period please read this manual The CA 2200 includes protection circuitry that will prevent the amplifier from operating at dangerously high or low voltages At startup the AC mains voltage must be within a range of approximately 15 to 10 of its nominal value at startup or the amplifier will not turn on For example a 120V unit requires the AC mains to be between approximately 95V 135V in order to turn on Over voltage during operation if the AC mains voltage surges by roughly 10 or more during operation the amplifier will enter protection mode and shut down The Standby LED will flash to indicate the protection mode has been engaged Under voltage during operation if the AC mains voltage sags by 15 or more the amplifier will continue to play since this does not present a particular danger to the amplifier but note that it may not be able to achieve its usual standard of performance
7. under these compromised conditions The Standby LED will flash to indicate the condition Your new Class power amplifier will deliver outstanding performance immediately However you should expect to hear it improve somewhat as it reaches its normal operating temperatures and its various components break in It has been our experience that the greatest changes occur within the first 300 hours as the amplifier reaches thermal equilibrium and the capacitors fully form After this initial break in period the performance of your new product should remain quite consistent for years to come The only exception to this rule is if the unit is placed in standby or unplugged for an extended period of time allowing it to cool down Depending on the degree of cooling involved you should expect a brief warm up period before the power amplifier s sound quality is at its best Unless your amplifier was allowed to become quite chilled subsequent thermal re stabilization should not take long Fortunately you should never have to repeat the initial 300 hour break in period Please take a few minutes to review this manual and to familiarize yourself with your new amplifier We understand that you are anxious to plug everything in and get started However reading this manual and following the advice it gives will ensure that you get all the benefits you deserve from having purchased such a fine piece of equipment highly refined circuit design
8. use the single ended inputs of your Class power amplifier you need to engage them by configuring the amplifier as described in Initial Setup Speaker Outputs Two pairs of high quality five way binding posts are provided on the amplifier in order to facilitate bi wiring In practice bi wiring involves connecting two preferably identical sets of speaker cables between each amplifier channel and its corresponding loudspeaker In many cases the benefit is a subjectively improved level of clarity and detail from the speaker as a result of being able to feed the two separate sections of its crossover and driver complement with identical yet separate signals Many high quality loudspeakers also offer two sets of connections on their speakers Generally one set of the connections on the loudspeaker feeds the portion of the speakers crossover network that supplies the woofer with its signal the other set of connections connects to the portion of the crossover that supplies the rest of the speaker with the midrange and high frequencies Although the binding posts on your Class amplifier will accept bare wire connections we strongly recommend the use of high quality spade or hook lugs crimped and soldered onto the ends of your speaker wires Using high quality connectors will ensure that your speaker connections do not gradually deteriorate from fraying and oxidizing bare wires It also helps prevent accidental short circuits f
9. card and drop it in the mail You will find the warranty registration card at the end of the separate warranty policy booklet enclosed Every effort has been made to make the Class CA 2200 simple and straightforward to install and use Still we have no way to evaluate many other variables such as the size and shape of your room its acoustics and the associated equipment you have chosen to use with your amplifier All of these factors influence the ultimate performance of your system For this reason we strongly encourage you to have your system installed and calibrated by your dealer whose experience training and specialized equipment can make a profound difference in the final performance of the system unpacking your amplifier Important placement ventilation Unpacking and Placement Carefully unpack your power amplifier according to the supplied instructions and remove all accessories from the carton Please take care when lifting the amplifier as it is quite heavy Keep all packing materials for future transport of your Class product Shipping your new component in anything other than its purpose designed packing material may result in damage that is not covered by the warranty There are two options when placing your power amplifier you may place it close to the speakers requiring longer interconnecting cables from the preamplifier or place it close to the preamplifier requiring longer speaker cables
10. e assuming the amplifier is going into its protection mode 5 The AC mains fuse is blown There is a specific troubleshooting procedure for a blown AC mains fuse since this rare occurrence sometimes indicates a significant problem Please follow the following steps in order a Disconnect your amplifier from the AC mains as well as from its input connections and speaker connections and remove the fuse cover on the rear of the unit If the fuse appears to be blown replace it only with a fuse of the same type and rating specified below Using any other type of fuse particularly a larger value fuse can result in permanent damage to your amplifier If you are uncomfortable replacing the fuse yourself contact your Class dealer for assistance Mains voltage 100 120VAC Fuse type MDA slow blow Rating 10A Mains voltage 230 240VAC Fuse type MDL slow blow Rating 8A After replacing the fuse and fuse cover reconnect the amplifier to the AC mains only and turn it on without reconnecting either the inputs or the speaker wires If the fuse blows again disconnect it from the AC mains and contact your Class dealer for assistance If everything seems fine place the amplifier back into standby and carefully reconnect the input cable and power the amplifier up If the fuse then blows or the amplifier goes into protection you may have a serious fault with your preamplifier processor Contact your Class d
11. e flow of air through the unit Avoid placement on soft surfaces that would restrict airflow such as plush carpeting custom installations serial number register your purchase operating voltage Warning Drawings are included in this manual to facilitate special installations and custom cabinetry see the section Dimensions An optional purpose designed rack mount kit is available for this product Contact your Class dealer for more information The serial number for your power amplifier is found on the rear of the unit Please note and record this number on the page entitled Important Safety Instructions for your future reference Having found the serial number now would be a good time to fill out the registration card Please register your purchase so we can advise you of updates and other items of interest It will take only a minute or so Please complete the card now before you forget The CA 2200 power amplifier is set at the factory internally for 100V 120V 230V or 240V AC mains operation as appropriate for the country in which it is to be sold 230V only in European Union countries in compliance with CE regulations The voltage setting may not be changed by the user or dealer Make sure that the label on the rear panel of your power amplifier indicates the correct AC operating voltage for your location Attempting to operate your power amplifier at an incorrect voltage may damage the unit The voltage
12. ealer Finally if everything is still fine place the amplifier in standby and carefully reconnect the speaker wires Check both ends of the speaker wires for possible short circuits Then power up the amplifier again If the amplifier remains functional the fuse does not blow then the original fuse probably blew in order to protect the amplifier from a large AC mains surge If it blows again contact your Class dealer for assistance The Standby LED is flashing quickly and a Channel LED is flashing red Try resetting the unit by disconnecting it from the AC mains power waiting a few seconds and reconnecting the amplifier to power If this does not solve the problem contact your Class dealer for assistance 21 22 Specifications Class Audio reserves the right to make improvements without notice Power output 200W ch continuous rms 89 both channels driven 400W ch continuous rms 4Q Frequency response 10Hz 22kHz 0 0 1dB 10Hz 155kHz 0 3 0dB Phase better than 10 O 22kHz Signal to noise ratio 108dB ref full ouput 10Hz 80kHz Channel separation better than 110dB 20kHz Noise floor FFT all peaks less than 95dBV 10Hz 80kHz Distortion THD noise 0 003 89 unweighted 1 0Vrms IHz input 10Hz 500kHz Voltage gain 29 1dB Sensitivity 1 4Vrms for rated output 89 Input Impedance 100kQ Rated power consumption as per IEC60065 para 2 3 10 480W Idle power consumpti
13. ectronics from any connection with the power grid Select button The Select button is used along with the Mode button when configuring the amplifier for either balanced or single ended operation It is also used when configuring the turn on delay or amplifier number for an amplifier connected to a Class preamplifier by the DC Trigger or CAN Bus control systems Channel status LED indicators Each amplifier channel has two Channel LED indicators They are used to indicate the use of either balanced XLR or single ended RCA inputs for that channel These indicators are also used to indicate fault conditions in your amplifier should any ever arise If a channel s LED indicators blink red there is a problem in that particular channel If all the Channel LEDs are blinking red there may be a systemic problem that is not specific to a particular channel If you see any Channel LED Indicator blinking red please disconnect the amplifier from the AC mains immediately and check that all external connections are cleanly made and secure If no fault is immediately obvious please call your authorized Class dealer for assistance Mode button The Mode button is used along with the Select button when configuring the amplifier for either balanced or single ended operation It is also used when configuring the turn on delay and amplifier number of the amplifier when it is connected to a Class preamplifier by the CAN Bus communications
14. elect button until both Channel LEDs are off Make sure you configure the amplifier to use the type of input connection you will be using 18 configuring amplifier turn on delay amp no In a system that contains multiple Class amplifiers you may set the number of seconds of turn on delay for each amplifier allowing each to turn on in the order you have specified rather than all at once This number also acts as an ID when using the CAN Bus Having several powerful amplifiers all turning on at the same time can sometimes stress the AC mains in your home potentially leading to nuisance tripping of circuit breakers For example to set the delay for two seconds and to designate a particular amplifier as 42 Place the amplifier in standby Standby LED on Press and hold the Mode button until both Channel LEDs are lit When released both LEDs will blink to indicate the turn on delay and current number of the amplifier e g once to indicate a one second delay and amplifier 1 Ifyou want to change the current amplifier number setting press and hold the Mode button again until both Channel LEDs are on While continuing to hold the Mode button press the Select button two times the same number as the desired delay in seconds and the amplifier number Release the Mode button The amplifier will confirm your choice by blinking the Channel LEDs twice Make your preamp connections With the amplifier in standby
15. he system as this prevents any transients from other components from getting through to your loudspeakers Unpack everything according to the included instructions Be careful when doing so as this amplifier is quite heavy Place your amplifier be sure to read Unpacking and Placement and connect it to the AC mains This includes deciding on the location making sure you have adequate ventilation and adequate clearance for all the wires behind the amplifier Once accomplished connect the amplifier directly to the AC mains Do not use extension cords as most are not suitable for the current sometimes required by your amplifier Configure your amplifier The Select and Mode buttons are used when configuring your amplifier for how you would like it to operate While in standby pressing the Select button will cause the Channel LEDs to light up indicating how the amplifier is currently configured either balanced or single ended for each channel One of the Channel LED indicators will be blinking indicating that you may select either balanced or single ended operation for that channel Press the Mode button to toggle between either the balanced mode or the single ended mode of operation as indicated by which of the two channel LEDs for that channel is blinking Press the Select button again to select the other channel and press the Mode button to select the configuration for that channel To finish press and release the S
16. is allows you to daisy chain your control wires from one product to the next The amplifier is designed to respond to IR commands of 5 Volts DC with the tip of the mini mono plugs defined to be positive relative to the shank of the plug 5Vdc less than 100 mA 16 Danger DC Trigger Input and Output Many audio video preamplifiers can supply a DC control voltage to associated equipment in order to induce desired behavior Your Class amplifier can take advantage of these capabilities in order to be switched between operate and standby automatically perhaps in concert with the A V preamp itself Two s inch mini mono jacks provide this remote controlled turn on that is toggling between operate and standby of the amplifier These jacks provide a simple pass through of the control voltage from one to the other allowing you to daisy chain a series of amplifiers quite easily The remote trigger will be operated by the presence of 5 12 Volts DC with tip polarity as shown below 5 12 volts AL less than 100 mA RS 232 Control Port This DB 9 connector has two purposes e downloading new operating software into your amplifier should new features ever be added for example e for external control of your amplifier by systems such as i Command AMX and Crestron For more information please contact your dealer and ask about home automation systems AC Mains Input An IEC standa
17. l state and a standby mode that leaves the amplifier off yet ready to respond to system commands via any of the supported control options e g IR input DC trigger CAN Bus or RS 232 The current state of the amplifier is indicated by the LED indicator in the center of the Standby button The state of this LED indicates the following on standby flashing on power up initialization e off Channel LED on amp operate flashing after power up AC mains voltage out of range When in standby the amplifier s gain stages are powered down Only a small power supply and control circuit remain on consuming relatively little power Fortunately since the output stages by their nature conduct a great deal of current they warm up and sound their best very quickly If you are not going to use the amplifier for an extended period of time perhaps while traveling for a vacation we suggest you disconnect it from the AC mains Please be certain that the amplifier is in standby prior to disconnecting it from the AC mains 12 Caution Also it is a good practice to physically disconnect any and all valuable electronics from the AC mains during electrical storms as a lightning strike anywhere near your home can put a tremendous surge on the AC mains that can easily damage any piece of electronics no matter how well designed and protected The best protection in the case of severe electrical storms is to simply remove the el
18. laced upon or against them Do not stress the AC cord by stretching it to reach a plug If damage does occur to the AC cord take it to your Class dealer for a thorough check up and proper repair or replacement If your component will be out of use for an extended period of time vacation etc you may wish to unplug the power cord from the AC source to prevent any chance of problems from a voltage surge or lightning strike NEVER wet the inside of this product with any liquid NEVER pour or spill liquids directly onto this unit NEVER block air flow through ventilation slots or heatsinks NEVER bypass any fuse NEVER replace any fuse with a value or type other than that specified NEVER attempt to repair this product If a problem occurs contact your Class dealer NEVER expose this product to extremely high or low temperatures NEVER operate this product in an explosive atmosphere ALWAYS unplug sensitive electronic equipment during lightning storms Please record the serial number of your new Class component here for future reference Serial Contents Welcome tothe Classe E 5 a word about installatiOD ses vies casser disaegesu s eese eei ere the ve dvo bu ee dg EE 5 Unpacking and Placement 2 ce tenni ette ee EE 6 dite Tel EE 6 placements 6 VE TEE 6 CUSTOM DEU TE H ECCLE 7 register YOUN purchase leseese 7 operating Voltage ss eene tete e prai dada dia ass sas 7 Wa
19. lt UP Dred kein PEriGd ses isorosi tpe ndo sb ans SEENEN pia e dps girl 8 Ee RENE 8 highly refined circuit d signer eege 9 extensive LISTENING E 9 extraordinary longevity aient eto exer try ete do ds de eter e be ess 10 Obst POLE CU ONY reet tr re e e REP PIRE ER EEN 10 Front Panel ssa M 11 Rear PANE mr 13 Initial SELUp RE 17 configuring balanced single ended operation 17 configuring amplifier turn on delay amp mo 18 Care and Maintenance soie terret reete three I AETERNE E A 19 eelst ee d 20 e E 22 Bitte 23 a word about installation Welcome to the Class family Congratulations on your purchase of a Class product It is the result of many years of continuous refinement and we are sure that you will enjoy it for many years to come We value our relationship with our customers Please allow us to stay in touch with you by returning your warranty card now before you pack up the shipping carton of your new product and forget all about it Doing so will enable us to let you know about any possible future upgrades or updates that might become available for your Class component Sending in your warranty card also registers your product with us so that warranty service can be obtained easily and quickly even if you have mislaid your original sales slip Please take a few minutes to fill out the warranty registration
20. mmunity requirements for unit to unit consistency and consumer safety The information contained in the manual is subject to change without notice The most current version of this manual will be posted on our web site at http www classeaudio com Important Safety Instructions Caution Please read and observe all warnings and instructions in this owner s manual and all those marked on the unit Retain this owner s manual for future reference 10 11 12 13 14 15 Do not attempt to service this product yourself Do not open the cover for any reason There are no user serviceable parts inside An open unit particularly if it is still connected to an AC source presents a potentially lethal shock hazard Refer all questions to authorized service personnel only To prevent fire or shock hazard do not expose the unit to water or moisture If a liquid does enter P P q your component immediately disconnect it from the AC mains and take it to your Class dealer for a thorough check up Do not place your component near any heat producing device such as a radiator stove etc Keep it away from direct sunlight Connect your component only to an AC source of the proper voltage The shipping container and the rear panel serial number tag will indicate the proper voltage Use of any other voltage may damage the unit and void the warranty AC cords should be routed so that they are not likely to be walked on or pinched by items p
21. nd the test of time We are confident that your new Class product will give you many years of trouble free reliability and musical enjoyment just as previous Class products have given their owners Finally your new Class amplifier incorporates a variety of protection circuits all designed to protect both the amplifier and your loudspeakers against dangerous fault conditions Significantly these protection circuits do not intrude upon or limit the normal performance of the amplifier rather they simply put the amplifier into protection mode when confronted with abnormal conditions These conditions include output overload DC offset AC mains voltage outside of normal tolerances excessive operating temperatures If any of the first three conditions occurs on either channel any of which might harm either your amplifier or possibly your loudspeakers the amplifier will immediately go into protection mode In such a case a Channel LED indicator will blink red indicating the channel with the fault and the sound will be muted until the fault can be righted If the fault is not channel related e g AC mains voltage out of range the Standby LED will blink In all cases the unit will need to be re started once the cause of the fault condition has been rectified CLASSE Front Panel 1 Standby button amp LED indicator The front panel Standby button will toggle the amplifier between operate its fully operationa
22. nt In the course of optimizing the circuitry for a product hundreds of decisions are made based on the subjective impression given by substituting one high quality part for another As an example we may listen to half a dozen 0 1 film resistors of the same value from several different companies Standard tests may show them all to provide identical results in terms of noise distortion and so forth Yet almost invariably one selection yields some small improvement in the subjective reaction to the performance of the product under development Less often even a single such change can result in a surprisingly large improvement Multiply those various improvements by the dozens or even hundreds of such decisions that must be made before the product can be finalized for production and you have a remarkable improvement indeed all based on careful listening tests which we view as a necessary complement to the solid engineering you might rightly expect from Class 10 extraordinary longevity robust protection Another benefit of having worked with highly refined circuit designs so extensively over many years is that we have vast experience in what works well over the long term By using only the highest quality parts to begin with and then using them in an informed way as a result of both accelerated aging experiments and actual long term experience we are able to design and manufacture products which we are confident will sta
23. nts of these XLR input connectors are Pin 1 Signal ground Pin 2 Signal non inverting Pin 3 Signal inverting Connector ground lug chassis ground These pin assignments are consistent with the standard adopted by the Audio Engineering Society AES14 1992 If you are using your Class power amplifier with a Class preamplifier youre all set just take standard balanced interconnect cables and plug them in Then engage that input on the power amplifier by configuring it as described in Initial Setup Ifyou are using another brand of preamplifier please refer to the operating manual of your balanced output preamplifier to verify that the pin assignments of its output connectors correspond to your amplifier If not have your dealer wire the cables so that the appropriate output pin connects to the equivalent input pin Single Ended RCA Input Single ended cables using RCA connectors are the most common form of analog connection used in consumer electronics When implemented carefully and with use of high quality interconnecting cables this standard can provide excellent performance Class has gone to extraordinary effort to ensure that the single ended RCA inputs of your power amplifier are as good as possible However this connection standard cannot offer the immunity from interference that balanced interconnection does hence our recommendation to use the balanced inputs when possible If you elect to
24. on 166W Mains voltage specified on rear panel cannot be changed by dealer or user Dimensions not incl controls or connectors Width 17 5 445mm Height 8 75 222mm Depth 18 5 470mm Shipping weight 92lbs 42kg Net weight 80lbs 36kg For more information see your Class dealer or contact Class Audio 5070 Fran ois Cusson Lachine Quebec Canada H8T 1B3 Telephone 1 514 636 6384 FAX 1 514 636 1428 http www classeaudio com email cservice classeaudio com Class and the Class logo are trademarks of Class Audio Inc of Lachine Canada All rights reserved i Command is a trademark of Equity International Inc All rights reserved AMXO is a registered trademark of AMX Corporation of Richardson TX All rights reserved Crestron is a trademark of Crestron Electronics Inc of Rockleigh NJ All rights reserved Dimensions L 17 50 445mm V CLASSE prom o o BEE ME Lr possis vove 8 0 0 203mm 8 5 222mm si o BN 1 E L 2 2 12 66 62mm 332mm 14 36 365mm 18 50 470mm 19 83 504mm 1 72 44mm E 3 82 9 86 97mm 250mm 17 50 445mm 23 v1 9 CLASSE Class Audio 5070 Francois Cusson Lachine Quebec Canada H8T 1B3 1 514 636 6384 1 514 636 1428 fax http www classeaudio com email cservice classeaudio com Copyright 2005 Class Audio Inc
25. or Trigger systems RIGHT olreur CAN es RS232 Rear Panel The following descriptions are intended as a quick reference should you have any questions about your new product Please see the next section entitled Initial Setup for specific advice on incorporating your new amplifier into your system 1 Balanced XLR Input Balanced audio interconnections were originally developed in the professional audio world for preserving the delicate nuances of extremely small microphone level signals For many years now they have also been used by performance oriented consumer companies like Class to preserve every nuance of the finest audio performances in your collection Technically balanced audio interconnections provide two distinct benefits they double the signal s strength as it travels from one component to the next increasing the potential signal to noise ratio by 6 dB they also do an excellent job of rejecting noise and interference that might otherwise be picked up between the components due to either EMI electromagnetic interference or RFI radio frequency interference In the world of wireless telecommunications there is more potential interference around than ever before it makes sense to keep it out of music and movie soundtracks 13 14 For this reason we strongly recommend using the balanced analog interconnections between your Class components wherever possible The pin assignme
26. p The AC mains fuse is blown See Troubleshooting 4 below or contact your Class dealer The AC mains is out of range Check the voltage specified on the rear panel 2 No sound and one or more Channel LEDs is blinking red Your protection circuitry may have been engaged Disconnect the amplifier from the AC mains and disconnect all inputs and outputs Then try to power up the amplifier again connecting it only to AC power If the LED continues to blink there is a fault condition in the amplifier itself and it should be disconnected and taken to your Class dealer for service fit powers up without any difficulty power it back down and reconnect only the inputs Then restart the amplifier If it goes into its blinking protection mode something is wrong with a component upstream of the amplifier probably a DC offset or similar problem Your amplifier is trying to protect your loudspeakers even small amounts of DC can damage woofers in relatively little time Try different source components to discover whether the problem is limited to a single source or exists all the time which would indicate a problem with the preamplifier Contact your dealer for help with the appropriate component 3 Theamplifier keeps shutting off Make sure you are providing adequate ventilation to the amplifier and that the ambient room temperature is below 105 F 40 C Run through the troubleshooting sequence outlined abov
27. rd power cord is used with the CA 2200 Plug the cord into the IEC receptacle on the rear panel and the other end into a suitable wall outlet AC Mains Fuse Your Class power amplifier has an AC mains fuse accessible on the rear panel If you suspect that your AC fuse has blown disconnect your amplifier from the AC mains as well as from its input connections and speaker connections and refer to the appropriate item of the section enitled Troubleshooting Do not open your amplifier There are no user serviceable parts within this product Potentially dangerous voltages and current capabilities exist within your power amplifier even when disconnected from AC mains Do not attempt to open any portion of the amplifier s cabinet There are no user serviceable parts inside your power amplifier All service of this product must be referred to a qualified Class dealer or distributor Important configuring balanced single ended operation Initial Setup Your new Class amplifier is quite simple to set up and enjoy Please follow the steps outlined below in order to safely set up and use your new amplifier The AC mains connection should be the last connection you make on your new power amplifier In addition it is always a good idea to power up your power amplifier s last after everything else has been powered up and has stabilized Conversely it is good practice to power the amplifier s down first when shutting down t
28. re correct and secure before plugging the power cables to the AC outlets 7 Turn on all the other components in your system and then turn on your amplifier It is always good practice to turn any power amplifier on last and to turn it off first Doing so prevents any turn on turn off transients that might originate in other components from damaging your loudspeakers Care and Maintenance To remove dust from the cabinet of your amplifier use a feather duster or a lint free soft cloth To remove dirt and fingerprints we recommend isopropyl alcohol and a soft cloth Dampen the cloth with alcohol first and then lightly clean the surface of the amplifier with the cloth Do not use excessive amounts of alcohol that might drip off the cloth and into the amplifier At no time should liquid cleaners be applied directly to the amplifier as direct application of liquids may result in damage to electronic components within the unit 20 Troubleshooting In general you should refer any service problems to your Class dealer Before contacting your dealer however please check to see if the problem is listed here 1 No sound and no Channel LED is lit The amplifier is not plugged into the AC mains or the AC mains are down circuit breaker fuse A brown out or short term loss of power might require the internal microprocessor to be reset Unplug the unit for at least 30 seconds and then plug it in again and try powering it u
29. rom poorly terminated connections Class CAN Bus Control Ports These RJ 45 connectors are reserved for future control and communication applications using Class Audio s implementation of the Controller Area Network CAN Bus specification IR Input and Output Your Class amplifier includes two s inch mini mono jacks in order to support the IR remote controls that are ubiquitous today IR commands exist for toggling the amplifier between operate and standby as well as discrete command codes for either operate or standby These codes may be used in macros for sophisticated remote control systems facilitating the control of the amplifier in the larger context of a complete system Actually this ZR Input and Output description is a bit of a misnomer the input supplied to these plugs is e ectrical in nature not IR It is obtained by using standard IR receivers distribution amplifiers and emitters available from your dealer to translate the remote s flashes of infrared light into corresponding pulses of electricity The big advantages here include being able to easily route the signals anywhere they might need to go and the reliability of a solid electrical connection Since an IR distribution system such as your dealer may design for you usually must control many products your amplifier includes both an IR input for the control of this product and an IR output so as to pass along the same signal to the next product Th
Download Pdf Manuals
Related Search