American Dynamics ADCA470CAFN Digital Camera User Manual
Contents
1. phone plug The tip of the plug carries the hot non inverting side of the signal the ring carries the low inverting side of the signal and the sleeve is ground see Figure 3A Export Version Use a male XLR connector Pin 2 carries the hot non inverting side of the signal Pin 3 carries the low inverting side of the signal and Pin 1 is ground see Figure 3B For unbalanced operation U S Version Use a 2 conductor Tip Sleeve 1 4 phone plug The tip of the plug carries the signal and the sleeve is ground The ring connection in the jack is automatically grounded by the sleeve see Figure 4A Export Version Use a male XLR connector Pin 2 carries the signal and Pin 1 is ground Short Pin 3 to Pin 1 in order to reference the input differential amplifier for the correct gain Failure to do this will result in a loss 4 lt z fo a o w w fo ia a personnel Input Sensitivity of gain see Figure 4B For all versions of the amplifiers the gain remains the same regardless of whether the input is balanced or unbalanced Note The polarity of the balanced inputs can be reversed by changing four jumpers on the Main Board near the barrier strip inputs Cross wire JP103 and JP104 to change the input polarity of CH1 and cross wire JP101 and JP102 to change CH2 CAUTION To avoid the risk of electric shock refer all internal adjustments to qualified service The input sensitivity of the am2. pm125 pm420 Professional Stereo Power Amplifier PROFESSIONAL RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL Safety Information 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 of the presence of important operating and main tenance servicing instructions in the literature accompanying the appliance Table Of Contents Introduction s een a E NS 1 Unpacking and Paperwork seeeeeeseeeseereresrerse 1 Features and Specifications jG Rese Soran mee tet AOD ROTATOR ROS os FRO ET 2 PIA Sat A E S RER 4 Controls and Functions eeeeeeeeeeeeeeeeeeeeeseeerrreseee 6 Installation Location and General Precautions eeseeeeeeeeeeeeeeeeeeeeeesseses 8 Mechanical Considerations c c ceeseeeeeeeee 8 Rear Support for Road Applications 0 00 eee eseeeseceeeeeeeeeeeeeaeenes 8 Thermal Considerations cccccccccccccceseseseees 8 AC Power Considerations cccccccccsceseeeees 9 Magnetic Leakage Considerations ssion aT 9 I
3. CH2 SPEAKER OUTPUTS Multi way binding posts are used to connect loudspeakers to the amplifier outputs The red terminals are the signal connection and the black terminals are the signal return connection The black terminals are internally tied together and to signal ground 9 POWER CORD Connect to a properly configured outlet providing the line voltage specified for your model ee Installation Location and General Precautions Observe the following precautions when choosing a location for your amplifier A Do not expose the unit to rain or moisture If a fluid or foreign object should enter the unit disconnect the power plug and contact an authorized dealer or service center Do not pull out the plug by pulling on the cord grasp the plug firmly B Protect from heat and allow adequate ventilation Place away from direct sources of heat such as heating vents and radiators All components produce some heat during operation so make sure that the ventilation holes are not covered and that air is allowed to circulate freely behind beside and above the unit Excessive heat is the single greatest source of both short term and long term component failure 4 lt z fo a o w w o a a Mechanical Considerations The pm125 requires one rack space 1 757 while the pm420 requires two rack space units 3 5 and a depth of 13 25 inside the rack including the rear supports Secure the unit mechanically using four screws wi
4. channel CH2 4 CH1 CH2 STATUS INDICATORS These LEDs display information about the operation of the amplifier READY These LEDs illuminate green when the power is on and the amplifier is ready to operate The READY LEDs illuminate red when the power switch is first turned on while the power supply is stabilizing prior to the speaker output relays switching in or when the amplifier is in protect mode SIGNAL These LEDs illuminate yellow when a signal is present at the Speaker Output jacks to provide an indication of output power relative to full power OdB CLIP PROTECT These LEDs illuminate red when the power switch is first turned on when the output begins to clip or whenever there is a fault condition detected that causes the output relay s to disengage These fault conditions include excessive DC Offset excessive heatsink temperature and short circuits at the speaker output s Note The relays operate independently for each channel Therefore it is possible for one channel to operate normally while the other is in protect mode fe 0 VAC TO REDUCE THE RISK fe Eres 60 Hz OF FIRE OR ELECTRIC ae O WATTS SHOCK DO NOT EXPOSE I THIS EQUIPMENT TO RAIN R O A STEREO Wy wal OR MOISTURE O i t ON 6 OQ gt BRIDGED gulag crass wii RING Sy NYY ofF dB _ INPUT IMPEDAN E 2 2K OHM EACH LEG OFF dB MONO AY BE USED TO GROUND TOTAL 44K OHMS BALANCED DRIVE CH2 E ERGEN ANONO bded Td
5. mark them down either on paper or on pieces of tape or sticky dots attached to the amplifier s panel e In bi amplified multi amp systems it is a good idea to start with the low frequency amplifiers turned off or down and to check each frequency range from highest to lowest to ensure that each loudspeaker component is operating correctly ADD THIS JUMPER TO ACTIVATE THE CH1 CLIPPING ELIMINATOR s16 EE CH2 LEVEL BYPASS ADD THIS JUMPER TO ACTIVATE THE CH2 CLIPPING ELIMINATOR is CH1 LEVEL BYPASS Figure 8 Servicing Instructions CAUTION To reduce the risk of electric shock do not perform any servicing other than that contained in the Operating Instructions unless you are qualified to do so Refer all servicing to qualified service personnel Stereo Mono Switch The Stereo Mono Switch is located on the amplifier s main circuit board see Figure 8 and accessible from the back panel Leave the switch centered for normal stereo operation move it to the left for Bridged Mono operation and move it to the right for Dual Mono operation Level Defeat Jumpers The Level controls can be bypassed by moving the jumpers for CH1 and CH2 J15 and J16 which are located on the amplifier s main circuit board near the level adjustment pots see Figure 8 This will lock the amplifier into full gain as if the Level pots were fully clockwise Input Sensitivity Modification The input sensitivity of the ampli
6. of operation Use Parallel Mono operation for lower impedances Note Be sure to set both of the input level controls to the exact same setting for equal power distribution per channel Note In bridged mono operation the output connections are actually a balanced output configuration This means that neither output terminal may be grounded both have voltage present Caution Extreme care must be taken if using 1 4 phone plugs as speaker connectors with the amp in bridged mono mode The reason for this is when connected to a bridged mono output the shell of the plug is hot and could cause a nasty surprise if it comes in contact with something or someone that is grounded If you must use phone plugs at the speaker connection at least insulate the shell of the plug with shrink sleeving Parallel Mono Parallel mono operation is useful when you are running sustained high levels into a single load or when driving a low impedance load To configure the amplifier for parallel mono operation contact Carver Professional Technical Service Department for Field Application Bulletin pm125 1 It contains detailed instructions describing the simple procedure for modifying both the pm125 and pm420 power amplifiers for parallel mono operation Clipping Eliminator This circuit prevents the input signal from exceeding the point where it would drive the amplifier into hard clipping It has no effect on the signal until it reaches the point where clipping
7. or lamp 5 The amplifier is plugged into a switched outlet Verify that the outlet is live 6 The pm125 pm420 s circuit breaker has tripped Reset the Breaker Power On Low Output or No Output Low or no output problems are usually signal source bad cable or partial output short circuit related If the items listed below check out then the problem may be internal to the pm125 pm420 1 The Input Level controls are set too low 2 Move the input connections to another amplifier that you know is working to verify that it is not a source problem 3 Check the speaker connections Be sure that there are no small strands of wire touching similar strands coming from the other wire in the cable 4 Make sure the speakers are functioning correctly 5 If you are using bridged mono mode ensure that the Stereo Mono switch is set correctly 6 Use a voltmeter to determine if the power line voltage is dropping excessively when the amplifier is driven hard Playback Is Mixed with Hum 1 Check or replace the connecting cables ln 2 Make sure that each screw terminal connection is tight N 3 Signal cables may have been routed too closely to AC cables power transformers motors or other EMI inducing device 4 Try connecting another source to the power amplifier inputs If the hum stops the problem lies with the original source component Distortion Distortion is usually caused by excessive loss in the input controls the mixer equalizer
8. would occur The larger the input signal the more the signal is reduced to keep the output just below clipping The Clipping Eliminator circuitry is inactive when the unit is shipped from the factory but can be activated by installing jumpers in sockets JP9 and JP6 see instructions on page 13 Note If the Input Level control s are turned down far enough a sufficiently large input signal can drive the input differential amplifier into clipping The Clipping Eliminator circuit cannot remedy this kind of clipping Likewise it has no effect on clipping that occurs prior to the amplifier inputs at the mixer or equalizer stage for example Operating Tips Once the amplifier has been installed and wired into the system you are ready to use it Here are some tips to help you get the most from it CARVER 4 lt z fo a o w w fo x a e Verify that the Stereo Mono switch has been set to the mode that you want e When you power the system up for the first time out of the carton it s a good idea to start with all of the amplifier level controls turned down then advance them slowly one at a time so that you can confirm that each amplifier channel is operating normally e Be sure that the Input Level controls are set sufficiently high to allow the preceding device to drive the amplifier to full output For most installations this is wide open fully clockwise e Once you have established settings it is a good idea to
9. x 483mm x 337mm 23 8 lbs 10 8 kgs 28 Ibs 12 73 kgs Display Size H x W x D Net Weight Shipping Weight Due to ongoing continuous product development features specifications and availability are subject to change without notice z CH1 CH2 i e1 R CLIP PROTECT CLIP PROTECT r SIGNAL SIGNAL Pit READY READY HEADPHONES bd o Controls And Functions 1 POWER SWITCH When this switch is engaged the power turns ON and the READY indicators illuminate Be sure all connections are made and double checked before switching the power amplifier on 4 lt z fo a a w uw fo x a 2 CIRCUIT BREAKER This protection device will trip if the line current exceeds the rating of the circuit breaker causing the amplifier to shut down completely This operates the same as a standard line fuse except that it is resettable from the front panel after cooling down for a few seconds 3 HEADPHONES PM125 ONLY All conventional dynamic headphones may be plugged in here Headphone impedance may range from a few ohms to several thousand ohms although output level will vary depending on the impedance The HEADPHONES output is tapped directly off of the Speaker Output terminals and is therefore affected by the setting of the LEVEL controls on the rear panel Note Do not use headphones when the amplifier is switched to Bridged Mono operation The left channel CH1 will be out of phase with the right
10. 5 CH1 CH2 LEVEL CONTROLS These controls are used to adjust the input level of each channel When the controls are fully clockwise the amplifier operates at maximum gain Turning the controls counter clockwise attenuates the input signal The LEVEL controls can be bypassed by moving the jumpers located at J15 and J16 next to the LEVEL pots on the amplifier s main circuit board Plugging the jumper leads into sockets 1 and 2 will bypass the LEVEL controls locking the amplifier into full gain as if the LEVEL pots were fully clockwise The depth of the LEVEL controls can be changed by physically removing the pots from the amplifier board and moving them to a second set of holes in the board In this way they can either protrude from the chassis for easy adjustment or be recessed to protect the controls from inadvertently being moved once they are set CAUTION To avoid the risk of electric shock refer all internal adjustments to qualified service personnel 6 CH1 CH2 INPUT CONNECTORS These are 1 4 inch TRS Tip Ring Sleeve phone jacks They can be used with balanced signals or unbalanced signals see Input Wiring on page 9 for more information 7 STEREO MONO SWITCH This switch is used to select between NORMAL STEREO operation DUAL MONO operation or BRIDGED MONDO operation For NORMAL STEREO operation use CH1 and CH2 inputs For DUAL MONO or BRIDGED MONO operation use CH2 input only see page 10 and page 11 for more information 8 CH1
11. R Co PARALLEL LINE LEVEL INPUTS AC Power Considerations Ensure that the pm125 or pm420 is plugged into an outlet capable of supplying the correct voltage specified for your model and enough current to allow full power operation of all the amplifiers plugged into it The current demand of a power amplifier varies depending on several factors including the impedance of the load the output level of the amplifier and the crest factor and duty cycle of the program material Under typical conditions reproducing rock music with both channels driven into a 4 ohm load to the point where musical peaks are just at the clipping point the amplifiers require the following average currents pm125 2 amps for 120V versions 1 amp for 230V versions pm420 10 amps for 120V versions 5 amps for 230V versions Magnetic Leakage Considerations The pm125 and pm420 may be mounted without concern for magnetic flux leakage within the confines of common sense For example it s not a good idea to mount any power amplifier near a microphone input transformer or magnetic storage media Input Wiring The 1 4 inch phone jacks XLR connectors on pm420 export versions for the input signal can be used with either unbalanced 2 conductor or balanced 3 conductor cables Use shielded coaxial cable to conduct the signal from the source i e mixer equalizer CD player to the amplifier For balanced operation U S Version Use a 3 conductor TRS 1 4
12. contact your Carver Professional authorized dealer contractor or contact Carver Professional ATTN Customer Service Dept 9300 N Decatur Portland OR 97203 or call the Customer Service Department directly at 503 978 3363 You will be directed to an Authorized Carver Professional Service Station or receive instructions to ship the unit to the factory Please save the original shipping carton and packing materials in case shipping is required Please do not ship Parcel Post Include a complete description of the problem the associated components and connections and a copy of the purchase receipt Initial shipping costs are not paid by Carver Professional Return shipping costs will be pre paid if repairs were covered by the scope of this warranty YOU MUST RETAIN AND PROVIDE YOUR SALES RECEIPT TO OBTAIN COVERAGE UNDER THIS LIMITED WARRANTY The warranty Period begins from the date of first consumer purchase from an Authorized Carver Professional Dealer LIMITATIONS OF IMPLIED WARRANTIES All implied warranties for merchantability and fitness for a particular purpose are limited in duration to the warranty period for your product unless otherwise provided by the state law EXCLUSION OF CERTAIN DAMAGES In no event shall Carver Professional be liable for property or any other incidental or coincidental damages which may result from the failure of this product If your Carver Professional product proves defective in material or workmanship the liabi
13. crossover can t produce enough output overdriving resulting in output clipping or current limiting caused by excessively low load impedances 1 Check the setting of the Input Level controls If set too low the preceding piece of equipment may not have sufficient output to overcome the loss 2 Check the speaker connections and verify that all screw connections are tight and that there are no stray strands of wire to cause short circuits 3 Verify that the total load impedance presented to the amplifier is within the limits described in this manual for the mode of operation selected are and Service Assistance Care Wipe off the pm125 pm420 s front panel and chassis from time to time with a soft dry cloth If you have something stubborn to remove use a mild dish soap or detergent sparingly applied to a soft cloth Don t use alcohol ammonia or other strong solvents Service Assistance We suggest that you read the Limited Warranty completely to fully understand your warranty service coverage Please promptly complete and return the Warranty Registration Card Also be sure to save the sales receipt in a safe place It will be necessary for warranty service If your CARVER Professional product should require service you may contact the CARVER Professional Technical Service Department by calling 503 978 3363 or by writing to us at the factory address shown below We will then direct you to the nearest in our national network of Autho
14. ers of items to which this declaration relates is in conformity with the following standard s or other normative document s EN55013 EN55020 EN60065 title and or number and date if issue of the standard s or other normative document s if applicable following the provisions of 89 336 EEC 73 23 EEC 4 lt z fo a o w uw fo x a Directive PORTLAND OR USAApril 25 1997 Place and date of issue J a JEFE name and signature or equivalent marking of authorized person 130 pay ES Byear ormance Warranty Made In America A Division Of Phoenix Gold International Inc 9300 North Decatur e Portland OR 97203 e Tel 503 288 2008 Fax 503 978 3302 Part 8100 0088B
15. fier is set at the factory to 1 5VRMs for rated output To increase the sensitivity by 6dB to 0 775VRMs install jumpers JP1 CH1 and JP11 CH2 Sockets for these jumpers are located on the amplifier s main circuit board see Figure 9 Input Polarity The XLR input connectors on the pm125 pm420 are shipped from the factory with pin 2 hot as indicated on the rear panel The polarity of the balanced inputs can be reversed by changing four jumpers located on the amplifier s main circuit board Crosswire JP3 and JP4 to change the input polarity of CH1 and crosswire JP101 and JP102 to change CH2 see Figure 8 Clipping Eliminator Activation The clipping eliminator circuit can be activated by installing jumpers in sockets JP9 CH1 and JP6 CH2 see Figure 8 ADD THIS JUMPER FOR 0 775V INPUT SENSITIVITY IN CH2 4 lt z fo a o w w o a a ADD THIS JUMPER FOR 0 775V INPUT SENSITIVITY IN CH2 BACK OF AMPLIFIER Figure 9 In Case of Difficulty If you re having trouble or suspect a problem with the pm125 pm420 try some simple troubleshooting before contacting an Authorized Carver Professional Service Center No Sound No Power This is usually an indication of a power supply problem either the power line itself or the amplifier s power supply 1 pm125 pm420 power is switched off 2 Linecord is disconnected 3 Poor fit between the plug and AC receptacle 4 Power off at AC receptacle check with tester
16. l into i 8 ohms at 1kHz with no more than 0 1 THD 62 watts per channel into 4 ohms at 1kHz with no more than 0 1 THD Bridged mono operation 125 watts into 8 ohms at 1kHz with no more than 0 1 THD Dynamic Headroom gt 2dB Frequency Response 20Hz to 20kHz 0 75dB Channel Separation gt 55dB 1kHz Damping Factor lt 400 Input Impedance 22 Kohms unbalanced 44 Kohms balanced Sensitivity Low 1 5Vams for rated power into 4 ohms at 1kHz 193mVrMs for 1W into 4 ohms 1kHz High 0 775Vrms for rated power into 4 ohms 1kHz 100mVams for 1W SPECIFIC 4 lt z fo a o w uw fe a a FEATURES pm4 2 0 135W per channel into 8 ohms 210W per channel into 4 ohms 420W mono into 8 ohms 1 4 inch TRS input jacks Accepts balanced or unbalanced lines Multi way binding post outputs Independent 11 detent Level Controls for CH1 amp CH2 Dual Mono mode for operating both channels with a mono signal Bridged Mono mode for combining the power of both channels into a single higher powered channel Input sensitivity set at 1 5V RMS from factory Internally reconfigurable to 0 775V RMS Internal jumpers to bypass Left and Right Channel Level Controls SE a Pe SL LE OUH Lote PU IS IMH SHO HEr LEE 2 T DELU IFI e D H A li Independent CH1 CH2 2 Speaker relays will instantaneously disconnect if one of the following fault conditions is detected D C Offset Over Temperatu
17. lity of Carver Professional shall be limited to the repair or replacement at the option of Carver Professional of any defective part STATE LAWS MAY DIFFER Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limitations may not apply to you This warranty gives you specific legal rights and you may have other rights which vary from state to state OTHER IMPORTANT PROVISIONS Carver Professional reserves the right to make changes in design and improvements to its products without the responsibility of installing such changes to improvements on products previously sold by Carver Professional We suggest that you attach your purchase receipt to this Warranty and keep both documents in a safe place Thank you for your choice of a Carver Professional Amplifier NOTE The following warranty is exclusive to the United States and its possessions and territories Please see your Carver Professional dealer or distributor for the correct warranty information in your area or locale 4 lt z fo a o w w o x a LY w J O N DECLARATION OF CONFORMITY We PHOENIX GOLD INTERNATIONAL INC supplier s name 9300 N DECATUR PORTLAND OR 97203 USA address declare under our sole responsibility that the product m125 420 name type or model lot batch or serial number possibly sources and numb
18. m420 Serial Number Purchased at Date Finally take a moment to fill out and return the Warranty Registration Card packed with the amplifier and return it to Carver Professional This will allow us to keep you informed about new products as they become available 7 lt 1 re fo gt an o o 3 Sky fo O a FEATURES pml 25 50W per channel into 8 ohms 62W per channel into 4 ohms 125W mono into 8 ohms 1 4 inch TRS input jacks Accepts balanced or unbalanced lines Multi way binding post output connectors Independent 11 detent Level Controls for CH1 amp CH2 Dual Mono mode for operating both channels with a mono signal Bridged Mono mode for combining the power of both channels into a single higher powered channel Input sensitivity set at 1 5V RMS from factory Internally reconfigurable to 0 775V RMS Internal jumpers to bypass Left and Right Channel Level Controls j Independent CH1 CH2 speaker relays will instantaneously disconnect if one of the following fault conditions is detected D C Offset Over Temperature Short Circuit Additional protection circuitry includes Clipping Eliminator Resettable Circuit Breaker Power Ready Signal Present and Clip Protect indicators for each channel Headphone jack Convection cooled 70V transformer option CE 1997 approved Continuous Average Output Power both channels driven 50 watts per channe
19. nstallation continued Input WIN gesiscnsninssiininniniisi 9 Input Sensitivity seeeeeeeeeeeeseeereerersersrerreeseeee 10 Output Witte au OG Rees Ge ee 10 Polaritys nosne e e 10 D al Moho enren a a eer ere 10 Bridged MOnO sssseseseseseereserserserssresseseresresss 11 Parallel Mon noensinne Sea 11 Clipping Eliminator eee eeeeeneceeeeeeeee 11 Operating Tips Using the pm125 pm420 0 ee eeeeeeeeereees 12 Servicing Instructions ccsscseceeeeeeeereeteeees 13 In Case of Difficulty 14 Care and Service Assistance 15 Warranty Information sseseeeseseeeeeseessseeesreseserssee 16 Introduction Congratulations on your purchase of a new Carver Professional Power Amplifier It is backed by state of the art engineering and manufacturing techniques to bring you the best in quality craftsmanship and reliable performance The pm125 and pm420 are specially designed for pro sound applications Their rugged construction and low profile make them ideal for sustaining the abuses of the road with reliability and space saving economy And their accurate sound and ample power make them ideal for critical studio applications as well The pm125 is rated at 62 watts per channel into 4 ohms and 50 watts per channel into 8 ohms In bridged mono operation it is rated at 125 watts into 8 ohms The pm420 is rated at 210 watts per channel into 4 ohms and 135 watts per channel into 8 ohms In bridged mono operation it is rated at 420 wat
20. plifiers are set at the factory to 1 5VRMs for rated output The input sensitivity can be changed to 0 775 VRMs by adding two jumpers on the Main Amplifier Board See page 14 of this owner s manual for more information Output Wiring For Normal Stereo or Dual Mono operation use the red and black binding posts associated with each channel These are multi way binding posts that can be used with standard single or double banana connectors bare wire up to 8 gauge or spade lugs Use heavy gauge wire for speaker connections The greater the distance between the amplifier and the speakers the larger the diameter the wire should be to minimize power losses across the wire and improve the damping of the speaker Wire thickness specifications or gauges get larger as the wire gets thinner thus 14 gauge wire is thicker than 18 gauge wire Use the following chart as a guide Wire Length Up to 8 ft Up to 12 ft Up to 20 ft Up to 30 ft Up to 50 ft Gauge of Wire 18 gauge 16 gauge 14 gauge 12 gauge 10 gauge This will insure that the resistance of the speaker wire is less than 2 5 of 4 ohms resulting in a transmission loss of less than 0 1dB Class II NEC wiring can be used Polarity Loudspeakers must be connected with consistent polarity for correct phasing between them Incorrect phasing will do no physical harm but frequency response will be affected The key is to make sure that both speakers connected to the speaker
21. re Short Circuit Additional protection circuitry includes Clipping Eliminator Resettable Circuit Breaker Power Ready Signal Present and Clip Protect indicators for each channel Convection cooled e 70V transformer option e CE 1997 approved SSF HER Ni TH TA SPECIFIC Continuous Average Output Power both channels driven 135 watts per channel into 8 ohms from 20Hz to 20kHz with no more than 0 1 THD 210 watts per channel into 4 ohms at 1kHz with no more than 0 1 THD Bridged mono operation 420 watts into 8 ohms at 1kHz with no more than 0 1 THD Dynamic Headroom 1 4dB 4 ohms Frequency Response 20Hz to 20kHz 0 75dB Channel Separation gt 55dB 1kHz lt 400 22 Kohms unbalanced 44 Kohms balanced Low 1 5Vrams for rated power into 4 ohms at 1kHz 106mVams for 1W into 4 ohms 1kHz High 0 775VrMs for rated power into 4 ohms 1kHz 55mVrams for 1W into 4 ohms 1kHz Damping Factor Input Impedance Sensitivity Gain High 31 2dB 0 5dB Low 25 5dB 0 5dB Input Overload 18dBu IM Distortion lt 0 1 Signal to Noise Ratio gt 100dB A weighted referenced to rated power into 4 ohms Slew Rate gt 10V uS CMRR gt 44dB 1kHz Power Consumption 1000W at full power into 4 ohms Power Requirements 120VAC 60Hz USA and Canada Other voltages as required for export LED ladder 3 indicators per channel READY SIGNAL CLIP PROTECT 3 50 2U x 19 x 13 25 89mm
22. rized Warranty Service Centers or give you detailed instructions on how to return the product to us for prompt action If you should have questions or comments please write to the factory address given below Please include the model and serial number of your Carver Professional product your complete address and a daytime phone number Carver Professional Service Department P O Box 83189 Portland OR 97283 Phone 503 978 3363 Fax 503 978 3302 Carver Professional reserves the right to improve its products at any time Therefore specifications are subject to change without notice Warranty Information Professional Power Amplifiers 5 years WHAT IS COVERED THIS WARRANTY COVERS DEFECTS IN MATERIAL AND WORKMANSHIP ONLY This limited Warranty DOES NOT extend to 1 Damage caused by shipment 2 damage caused by accident misuse abuse failure to perform owner maintenance or operation contrary to the instructions in the Carver Professional owner s manual 3 units on which the serial number has been defaced modified or removed and 4 damage resulting from modification or attempted repair by any other person than authorized by Carver Professional WHAT WE WILL PAY FOR Carver Professional will pay all labor and material expenses for items covered under this Limited Warranty See the next section concerning shipping charges WHAT YOU MUST DO TO OBTAIN WARRANTY SERVICE In the event your Carver Professional product requires service
23. terminals are hooked up the same way Connect at the speaker outputs to on the back of the speaker and at the speaker outputs to on the back of the speaker Dual Mono For dual mono operation turn the amplifier off and move the Stereo Mono switch to the DUAL MONO position Connect the input signal to CH2 input CH1 input becomes disabled Connect the speakers to the Speaker Outputs on the amplifier in the same way that you would for normal stereo operation Both speaker outputs will carry the signal that is connected to the CH2 input DRIVE CH 2 IN BRIDGED MONO CALR il li cuss wane MAY BE USED MADE INUSA Co ARALLE EARN LINE LEVEL INPUTS A O NORMAL STEREO Dags as OFF OdB INPUT IMPEDANCE 22K OHM EACH LEG OFF 0dB BRIDGED DUAL TO GROUND TOTAL 44K OHMS BALANCED MONO MONO Bridged Mono For bridged mono operation turn the amplifier off and move the Stereo Mono switch to the BRIDGED MONO position Connect the input signal to CH2 input CH1 input becomes disabled Connect the speaker s to the two speaker terminals The CH2 red post is the hot non inverting side and the CH1 red post is the low inverting side see Figure 6 When connected in this way each channel sees one half the impedance of the speaker that is connected between them If an 8 ohm speaker is used each channel will see a 4 ohm load Therefore it is not recommended that anything lower than 8 ohms be connected in this mode
24. th washers to prevent marring the front panel Neoprene rubber washers are a good choice because they grip the screw head and prevent them from backing out when vibrated or transported Rear Support for Road Applications If the pm125 or pm420 is rack mounted and the rack is transported mechanical support for the rear of the amplifier is required This could take the form of a shelf across the rear of the amplifier or brackets that engage the rear of the unit This practice is recommended for all electronic instruments Thermal Considerations When the pm125 or pm420 are used in a free standing configuration no thermal considerations are necessary other than keeping the ventilation holes open If the amplifiers are rack mounted ensure that adequate ventilation exists around the sides of the amplifier When several amplifiers are mounted together in a rack you may need to provide air inlets from the outside of the rack The pm125 and U S versions of the pm420 are convection cooled Export versions of the pm420 contain a fan that is mounted on the rear panel It draws in air from the rear and exhausts it out the front which provides additional cooling for internal components The pm125 and pm420 may be stacked directly on top of each other without spacer panels If the amplifiers are used with other amplifiers ensure that the heat output from the other amplifiers doesn t interfere with the ventilation of the pm125 and pm420 or vice versa CARVE
25. ts into 8 ohms The sophisticated protection circuits designed into these amplifiers will protect your system should an unexpected fault occur They also protect the amplifiers from excessive temperature continuous current limiting and shorted outputs The balanced input uses a high quality high common mode rejection differential amplifier for exceptional hum and noise rejection These power amplifiers were designed and manufactured by people with a lifetime commitment to providing the world s finest components for music and sound reproduction Thanks for placing your confidence in Carver Professional We know your amplifier will provide many years of dependable service and reliable sound reproduction Unpacking and Paperwork Carefully unpack the amplifier and keep the original carton and packing materials for future moving shipment or long term storage After opening the box please check for any visible signs of damage that were not apparent from the outside of the box If you do encounter what appears to be concealed damage please consult your Carver Professional Dealer before installing the unit Important Paperwork Make sure to save your sales receipt Your receipt is extremely important to establish the duration of your Limited Warranty and for insurance purposes Next make a note of the serial number which is located on the back of the amplifier Record it in the space provided below for convenient reference Model ___ pm125 p
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