Audio Research REFERENCE 160S Manuel utilisateur
REFERENCE 160S
User’s Manual
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Customers Come First
Quality Every Day
Advancing Our Legacy
Commitment to Excellence
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Thank you for choosing the
Reference 160S to be a part of your
high performance music listening
system. After nearly 50 years, our
focus remains the advancement
of the state-of-the-art in music
reproduction. Every component
is meticulously hand-crafted and
personally auditioned before it
leaves our factory. Our attention to
detail,customerservice,andproduct
supportcreateunprecedentedvalue.
An Audio Research component
is more than a purchase, it’s
an investment.
We understand 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
please allow an appropriate
break-in period to fully appreciate
provide to your system.
After reading the user guide, if you
have further questions regarding
Audio Research customer service—
they will be happy to help you make
the most of your new component.
Happy Listening!
Thank You.
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2
Safety Instructions
Important Safety Instructions
triangle, is intended to alert the user to the presence of uninsulated
“Dangerous voltage” within the product’s enclosure that may be of
The exclamation point within an equi-lateral triangle is intended
to alert the user to the presence of important operating and maintenance
(Servicing) instructions in the literature accompanying the product.
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance
with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers,
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A
polarized plug has two blades with one wider than other. A grounding type
plug has two blades and a third grounding prong. The wide blade or the third
outlet, consult an electrician for replacement of the obsolete outlet.
10.Warning: The apparatus shall be connected to a MAINS socket outlet with
a protective earthing connection.
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11.Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles and the point where they exit from the apparatus.
12.
3
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14.
has been damaged in any way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus, the apparatus has been
exposed to rain or moisture, does not operate normally, or has been dropped.
15.WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO
NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE
16.DO NOT EXPOSE THIS APPARATUS TO DRIPPING OR SPLASHING AND THAT NO
OBJECTS FILLED WITH LIQUIDS, SUCH AS VASES, SHOULD NOT BE PLACED ON
THE APPARATUS
17. TO COMPLETELY DISCONNECT THIS APPARATUS FROM THE AC MAINS,
DISCONNECT THE POWER SUPPLY CORD PLUG FROM THE AC RECEPTACLE.
18.THE MAINS PLUG OF THE POWER SUPPLY CORD SHALL REMAIN READILY ACCESSIBLE.
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4
Contents
Safety Instructions......................................2
Warnings.......................................................5
A note about packaging................................5
Handling and moving Reference 160S..........5
Installation...................................................6
Top view.........................................................6
Before operating the Reference 160S...........6
Tube cage removal and installation.............7
Ventilation requirements............................10
In your system..............................................10
A note about vacuum tube life expectancy..10
Connections ................................................ 11
Back Panel Connections............................... 11
Input Connectors ......................................... 11
Output Connectors...................................... 11
Matching.......................................................12
Loudspeaker Cable Distance .......................12
Remote Turn-on .......................................... 13
RS-232 Control ............................................ 13
A.C. Power Connection............................... 13
Operation ....................................................14
Front Panel Controls and Displays..............14
Start-Up........................................................15
Shut-Down ...................................................15
Front Panel Button Functions .....................16
Back Panel Toggle Switch Functions...........16
...............................................16
Auto Bias ...................................................... 17
Hour Counter ...............................................17
Break-in.........................................................17
Maintenance .............................................. 18
Vacuum Tubes ............................................. 18
Servicing ...................................................... 18
Caution ........................................................ 18
Cleaning....................................................... 18
Disposal and Recycling Guidelines............. 18
Warranty..................................................... 19
.............................................. 20
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To prevent fire, or shock hazard, do not expose your Reference 160S to rain or moisture.
Do not place objects containing water on top of this unit.
This unit contains voltages which can cause serious injury or death. Do not operate with covers
removed. Refer servicing to your authorized Audio Research dealer or other qualified personnel.
The detachable power cord on your Reference 160S is equipped with a heavy gauge, 3-conductor
cable and a standard three-prong grounding plug in North America. For absolute protection, do
not defeat the ground power plug. This provides power line grounding of the Reference 160S
chassis to provide absolute protection from electrical shock.
The appliance coupler (a.c. power connector) at the rear of this unit must be accessible for
emergency power disconnect.
For continued protection against fire hazard, replace the fuse only with the same type and
rating as specified at the fuse holder.
The power button on the front of this unit, when off, does not disconnect all power from this
unit. This unit is in sleep mode when not on.
This unit is RoHS compliant.
A note about packaging...
Save all packaging in a dry place away from fire hazard. Your Reference 160S amplifier is a
precision electronic instrument and should be properly cartoned any time shipment is made.
You may not have occasion to return your unit to the factory for service, but if that should prove
necessary, or other occasion requiring shipment occurs, the original packaging will protect your
Reference 160S from unnecessary damage or delay.
The AC Power Supply Cord must be disconnected from the amplifier before replacement or
installation of vacuum tubes.
Handling and moving the Reference 160S
The Reference 160S weighs 100 lbs. (45 kg). Two people are required to safely lift the amplifier.
The chassis has both front and rear pairs of handles for this purpose. Note the rear of the
amplifier with the power and output transformers is the heavy end.
5
Warnings
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Important!
6
Installation
Top View
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6H30
Vacuum Tubes
KT150
Vacuum Tubes KT150
Vacuum Tubes
V7
V12
V6
V11
V8V5
V10
V9
6H30
Vacuum Tubes
Before operating the Reference 160S
Your Reference 160S amplifier is shipped with the vacuum tubes packed in foam blocks. These
must be unpacked and installed before you attempt to operate the amplifier. Included are eight
matched KT150s and 4 matched 6H30s. Follow the procedure below to remove the top cage
prior to vacuum tube installation.
Tube cage removal and installation
CAUTION: THIS STEP FOLLOWED BY USER IS ALLOWED ONLY ONCE FOR THE INITIAL
INSTALLATION BEFORE POWERING UP THE PRODUCT FIRST.
The AC Power Supply Cord must be disconnected from the amplifier before replacement or
installation of vacuum tubes.
7
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To remove the cage:
Illustration 1
Illustration 2
Important!
1. Use the supplied 7/64” hex driver to remove the (3) cap screws and nylon washers at the rear
of the top cage, per illustration 1:
2. Gently slide the cage to the rear until it clears the two rear handles. Then lift it up and off
the chassis, per illustrations 2,3:
8
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To install the cage:
Illustration 3
Illustration 4
1. Gently place the cage on top of the chassis with the rear of the cage behind the rear
handles. Ensure the sides of the cage are fully seated on the top plate. See illustration 2.
2. Slowly slide the cage forward until the two locating screws engage with the cap screws
behind the front panel.
See illustration 4. When the cage rear flange is flush with the rear edge of the chassis the cage
is fully installed. Note that you may have to slightly squeeze in the sides to allow slots in the
cage flange to align with the top plate cap screws.
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