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Servicing 

Because  of  its  careful  design  and  exacting 
standards  of  manufacture,  your  Reference  750 
amplifier  should  normally  require  only  minimal 
service to maintain its high level of performance. 

CAUTION: 

The  Reference  750  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 may be 
referred  to  the  Customer  Service  Department  of 
Audio Research Corporation at 763-577-9700 (CST).  
When  ordering  a  service  manual  from  Audio 
Research  or  an  authorized  dealer,  be  sure  to 
identify the serial number on your amplifier. 
 

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  paint  brush  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. 

Limited Warranty 

Audio Research Corporation products are covered 
by  a  3-Year  Limited  Warranty  or  a  90-Day  Limited 
Warranty  (vacuum  tubes).    This  Limited  Warranty 
initiates from the date of purchase, and is limited to 
the  original  purchaser,  or  in  the  case  of 
demonstration  equipment,  limited  to  the  balance 
of warranty remaining after original shipment to the 
retailer or importer.   
In  the  United  States,  the  specific  terms,  conditions 
and remedies for fulfillment of this Limited Warranty 
are listed on the warranty card accompanying the 
product in its shipping carton, or may be obtained 
from  the  authorized  retailer  or  from  the  Audio 
Research  Customer  Service  Department.    Outside 
the  United  States,  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 Warranty may vary from country to country.  
Warranty service should normally be obtained from 
the  importing  retailer  or  distributor  from  whom  the 
product was purchased.   
In the unlikely event that technical service beyond 
the  ability  of  the  importer  is  required,  Audio 
Research  will  fulfill  the  terms  and  conditions  of  the 
Limited  Warranty.    Such  product  must  be  returned 
at  the  purchaser's  expense  to  the  Audio  Research 
factory,  along  with  a  photocopy  of  the  dated 
purchase  receipt  for  the  product,  a  written 
description  of  the  problem(s)  encountered,  and 
any information necessary for return shipment.  The 
cost  of  return  shipment  is  the  responsibility  of  the 
purchaser. 

 

Содержание Reference 750

Страница 1: ...Owner s Manual Reference 750 Monaural Amplifier...

Страница 2: ...ng 5 Accessories 5 Vacuum Tubes and Preparation for Use 5 Installation 5 6 Warnings 6 Description of Controls 6 7 Connections 7 8 Operating Procedure 8 Installation of Optional Cover 8 Servicing 9 Cle...

Страница 3: ...ACUUM TUBE POWER AMPLIFIER REFERENCE 750 HIGH DEFINITION LIGHT BIAS METER V1 V3 V7 V2 SET SET CHECK R POWER LINE VOLTAGE V5 V15 V13 V9 CHECK V11 V8 V6 CHECK V4 V10 V12 V16 CHECK V14 POWER OUTPUT BIAS...

Страница 4: ...UNIT CONTAINS VOLTAGES WHICH MAY 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 SL...

Страница 5: ...e protectively packed in a separate carton save packing for possible future use 1 All input driver and output stage tube locations are clearly labeled with tube type and V number on the anodized plate...

Страница 6: ...artridge stylus up or down Due to the immense power supply reserves high power output and wide bandwidth of the Reference 750 added emphasis must be placed on use of your preamplifier s mute switch fr...

Страница 7: ...t of power whether the 4 8 or 16 ohm terminals are used provided the speaker and amplifier terminal impedances are matched IMPORTANT Use the best available speaker wires and interconnects Audio Resear...

Страница 8: ...re Start Up 1 Secure input connection between the amplifier and your preamplifier attach speaker leads to the appropriate output terminals 2 Attach supplied power cord to rear IEC inlet of amplifier a...

Страница 9: ...essing 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 i...

Страница 10: ...LATION Approximately 0 5dB 16 ohm load to open circuit Damping factor approximately 17 OVERALL NEGATIVE FEEDBACK 13dB SLEW RATE 20 volts microsecond RISE TIME 1 5 microseconds HUM NOISE Less than 0 2m...

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