Audio Research REFERENCE 160S Manuale utente

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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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.

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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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.

Warnings

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Important!

Installation

Top View

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6H30

Vacuum Tubes

KT150

Vacuum Tubes KT150

Vacuum Tubes

V12

V11

V8V5

V10

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.

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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:

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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.

Indice

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