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14

Vacuum Tubes

It is recommended that you replace the 

vacuum tubes of your Reference 750 SE in 

sets. All of the tubes in your amplifier have 

been matched to have similar operating 

characteristics, to provide the best sound 

quality and reliability. In the event you need 

to replace a single output tube, please refer 

to the numbers written on the silver base at 

the bottom of the vacuum tube when placing 

an order. 

Servicing

Because  of  its  careful  design  and  exacting 

standards of manufacture, your Reference 

750 SE amplifier should normally require only 

minimal service to maintain its high level of 

performance.

Caution

Your  Reference  750  SE  amplifier  contains 

sufficient  levels  of  voltage  and  current  to 

be lethal. Do not tamper with a component 

or part inside the unit. Even with the power 

turned  off,  a  charge  remains  in  the  energy 

storage capacitors for some time. Refer any 

needed  service  to  your  authorized  Audio 

Research dealer or other qualified technician. 

Additional questions regarding the operation, 

maintenance  or  servicing  of  your  amplifier, 

please  contact  the  Customer  Support 

Department  of  Audio  Research  Corporation 

at [email protected] or call 

 

763-577-9700. You may also initiate a service 

request  by  visiting  the  Audio  Research  

website (www.audioresearch.com) and 

selecting ‘Service Repair’ at the top right of 

the home page. 

Cleaning

To maintain the new appearance of this 

amplifier,  occasionally  wipe  the  front  panel 

and top cover with a soft, damp (not wet) 

cloth to remove dust. A mild, non-alkaline 

soap solution may be used to remove 

fingerprints  or  similar  smudges.  Cleaners 

containing abrasives should not be used 

as  they  will  damage  the  anodized  finish  of 

the front panel. A small, soft paintbrush is 

effective  in  removing  dust  from  bevels,  the 

recessed nameplate and other features of 

the front panel.

 Disposal and Recycling Guidelines

To dispose of this electronic product, do 

not place in landfill.  In accordance with the 

European Union Waste Electrical and Electronic 

Equipment (WEEE) directive effective August 

2005, this product may contain regulated 

materials which upon disposal require special 

reuse and recycling processing. 
Please contact your dealer or importing 

distributor for instructions on proper disposal of 

this product in your country. Or, contact Audio 

Research  Corporation  (763.577.9700)  for  the 

name of your importing distributor and how to 

contact them. Packing and shipping materials 

may be disposed of in a normal manner.

Fuses

The Reference 750 SE has three fuses: one on 

the  back  panel  of  the  amplifier,  next  to  the 

A.C. mains connector, and two internal fuses 

on the second level circuit board (both fuses 

are against the back panel). Please see the 

specifications for the exact fuse values.

Maintenance

Содержание Reference 750 SE

Страница 1: ...Reference 750 SE H I G H D E F I N I T I O N...

Страница 2: ...2 H I G H D E F I N I T I O N...

Страница 3: ...tand you are eager to begin listening however please take a few minutes to read through this guide for useful information concerning the operation of your new amplifier Once installed please allow an...

Страница 4: ...onnections 8 Input Connectors 9 Output Connectors 9 Matching 9 A C Power Connection 10 Operation 11 Front Panel Controls and Displays 11 Start Up 12 Shut Down 12 Display Brightness Adjustment 12 Fan 1...

Страница 5: ...ded emphasis must be placed on use of your preamplifier s mute switch from a safety standpoint A transient signal burst or pop such as caused by tonearm cueing accidental dropping or brushing of the p...

Страница 6: ...arefully remove each vacuum tube from its protective foam and match its location V number written on the base of the tube to the V number printed next to each socket Firmly seat each tube in its match...

Страница 7: ...for a vacuum tube power amplifier to run quite warm and if used for prolonged periods hot to the touch All components within are however operated at safe conservative levels and will not be improperly...

Страница 8: ...AY BE HAZARDOUS VOLTS SERIAL PLYMOUTH MINNESOTA MADE IN U S A CAUTION FOR CONTINUED PROTECTION AGAINST FIRE HAZARD REPLACE FUSE ONLY WITH SAME TYPE AND RATING 20A FUSE SLO BLO 10A 240V 2200W MAX 50 60...

Страница 9: ...best overall sonic results Connect the Reference 750 SE input to the preamplifier or electronic crossover using only the highest grade of audio interconnect cables To avoid sonic degradation use the...

Страница 10: ...aneous turn on noises those components might generate which could potentially damage the loudspeakers Good operating practice dictates that the amplifier should be turned on last and turned off first...

Страница 11: ...ET CHECK R POWER LINE VOLTAGE V5 V15 V13 V9 CHECK V11 V8 V6 CHECK V4 V10 V12 V16 CHECK V14 POWER OUTPUT BIAS FAN Panel output and bias meter Main Power Switch Fan Speed Front Panel Controls and Displa...

Страница 12: ...ergy Not allowing enough time for this process can result in blown fuses or other damage to your amplifier Display Brightness Adjustment The front panel meter display is illuminated with ultra low noi...

Страница 13: ...tool in the V2 SET hole in the front panel in same way the V1 tube bias level is adjusted Again press the BIAS switch repeatedly to check V4 V6 V8 V10 V12 V14 and V16 tube bias levels which should all...

Страница 14: ...audioresearch com and selecting Service Repair at the top right of the home page Cleaning To maintain the new appearance of this amplifier occasionally wipe the front panel and top cover with a soft d...

Страница 15: ...es the authorized importing retailer or distributor has accepted the responsibility for warranty of Audio Research products sold by them The specific terms and remedies for fulfillment of the Limited...

Страница 16: ...ng factor approximately 17 Overall Negative Feedback 13dB Slew Rate 20 volts microsecond Rise Time 1 5 microseconds Hum Noise Less than 0 2mV RMS 110dB below rated output IHF A weighted input shorted...

Страница 17: ...17...

Страница 18: ...dio Research Corporation Reproduction of this document in part or whole is expressly forbidden without written consent from Audio Research Corporation H I G H D E F I N I T I O N 3900 Annapolis Lane N...

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