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The  front  power  switch  on  the  DS450  must  be  off  to  use
the  remote  turn-on.  Front  power  switch  is  disabled  when
12 volt trigger is energized. The front power switch will not
turn the DS450 off if the 12 volt trigger is energized.

The +12VDC remote jacks have polarity protection, so they
will not operate if a -12VDC signal is accidentally connect-
ed, or if the control wires are reversed.

Operating Procedure

1.

Make  sure  you  have  read  and  followed  the  INSTALLA-
TION  and  CONNECTION  instructions  prior  to 
attempting operation.

2.

Secure  all  rear  panel  connections  between  DS450,  and 
input source, and loudspeakers.

3.

Make sure the amplifier is properly connected to a high-
current AC power receptacle via the supplied  power cord
(see CONNECTIONS).

4.

Your  preamplifier  should  be  “On”  and  muted  and/or  set
at minimum gain.

5.

Turn  Power  switch  from  “Off ”  to  “On”.  Unit  is  ready  to
play  when  LED  is  on. 

Note:

if  the  power  indicator  LED

fails  to  light,  turn  the  Power  switch  to  “Off ”  and  check
the  appropriate  fuse  for  possible  failure.  Extra  fuses 
for AC power are included with the unit. If green light is
blinking  after  turn  on,  a  low  line  voltage  condition 
exists – turn off amplifier and check line voltage.

6.

Your amplifier should now operate satisfactorily. It may
be played immediately, although best sonic performance
will in most cases not be achieved for an hour or so (see
INSTALLATION for further details.)

Start-Up Following “Protect” Shutdown:

The  DS450  amplifier  uses  a  sophisticated,  non-fused  sens-
ing  circuit  to  protect  the  amplifier  from  D C  at  the  input,
from thermal overload, and from shorting conditions at the
output  (e.g.  defective  speaker  leads,  etc.).  This  circuit  also
helps prevent damage to your loudspeakers.

When the amplifier senses a fault condition in either chan-
nel  from  excessive  D C  or  excessive  output  current,  it  will
automatically  shut  off  left  or  right  outputs  from  the 
amplifier.  Amplifier  will  automatically  return  to  normal 
operation when fault is removed.

If  the  amplifier  fails  to  resume  normal  operation  after 
removal of a fault condition, contact your authorized dealer
for further assistance.

Servicing

Because  of  its  careful  design  and  exacting  standards  of
manufacture,  your  DS450  amplifier  should  normally   
require  only  minimal  service  to  maintain  its  high  level 
of performance.

CAUTION:

The  DS450  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  capaci-
tors  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  Cus-
tomer  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  unit,  occasionally
wipe the front panel and top cover with a soft, damp (not
wet) cloth to remove dust. A mild, non-alkaline soap solu-
tion  or  dilute  isopropyl  alcohol  may  be  used  to  remove 
fingerprints  or  similar  smudges.  Cleaners  containing  abra-
sives should 

not

be used as they will damage the anodized

finish of the front panel. A small, soft paint brush is effec-
tive 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 land-
fill. In accordance with the European Union Waste Electri-
cal  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.

Model DS450

3

Содержание DS450

Страница 1: ...Owner s Manual 3900 ANNAPOLIS LANE NORTH PLYMOUTH MINNESOTA 55447 5447 PHONE 763 577 9700 FAX 763 577 0323 www audioresearch com D E F I N I T I O N S E R I E S Model DS450 STEREO POWER AMPLIFIER ...

Страница 2: ...es 1 Description of Controls 1 Connections 1 2 Single Ended Operation 2 Balanced Operation 2 Installation 2 Remote Turn on Connections 2 3 Operating Procedure 3 Start Up Following Protect Shutdown 3 Servicing 3 Cleaning 3 Disposal and Recycling Guidelines 3 Limited Warranty 4 Specifications 4 ...

Страница 3: ...T I O N S E R I E S RIGHT OUTPUT LEFT OUTPUT WARNING RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER CONNECTIONS SEE OWNERS MANUAL WARNING RISK OF HAZARDOUS ENERGY MAKE PROPER SPEAKER CONNECTIONS SEE OWNERS MANUAL RIGHT INPUT LEFT INPUT l WARNING TO PREVENT FIRE AND SHOCK HAZARD DO NOT EXPOSE THIS DEVICE TO RAIN OR MOISTURE UNIT MUST BE OPERATED IN A HORIZONTAL POSITION DO NOT OPERATE WITH COVERS REM...

Страница 4: ...ton upright in the center of the work area and with a small knife carefully slit the taped edges of the outer carton s top flaps Fold the flaps to the sides and while holding the inner carton in place roll the unit upside down You can now lift the outer carton off and set it and the filler panels aside Now slit the inner carton s taped seams on the bottom now facing upward Again fold the flaps ove...

Страница 5: ...a preamplifier or electronic crossover etc having balanced outputs When using the balanced inputs set two rear panel toggles to BAL position Disconnect any single ended cables Installation The amplifier may be installed in a ventilated cabinet observe the following guidelines to maximize the perfor mance and service of your amplifier With proper installation the DS450 may be left on continu ously ...

Страница 6: ...ed If the amplifier fails to resume normal operation after removal of a fault condition contact your authorized dealer for further assistance Servicing Because of its careful design and exacting standards of manufacture your DS450 amplifier should normally require only minimal service to maintain its high level of performance CAUTION The DS450 amplifier contains sufficient levels of voltage and cu...

Страница 7: ...photocopy of the dated purchase receipt for the product a written description of the problem s encountered and any infor mation necessary for return shipment The cost of return shipment is the responsibility of the purchaser Specifications POWER OUTPUT 450 watts into 8 ohms 550 watts per channel into 4 ohms both channels driven 1 THD 700 watts into 4 ohms one channel driven POWER BANDWIDTH 3dB Poi...

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