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5

Warnings

To prevent fire or shock hazard, do not 

expose your Reference Phono 3  

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 Phono 3 is equipped with a heavy 

gauge, 3-conductor (where applicable) 

cable and a standard three-prong 

grounding plug.  For absolute protection, 

do not defeat the ground power plug. 

This provides power line grounding of 

the Reference Phono 3 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.

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.

For continued protection against fire hazard, 

replace the fuse only with the same type 

and rating as specified at the fuse holder 

(see page 19 for fuse information).

This unit is RoHS compliant.

The Reference Phono 3 has automatic 

muting to help protect system components 

in the event of low line voltage. When 

sensing low line voltage, the preamp 

displays ‘Low Line’ and automatically goes 

into ‘Mute’. This condition will persist until 

the line voltage returns to a safe operating 

level; please note the unit will remain 

in ‘Mute’ even after ‘Low Line’ no longer 

appears.

Note that automatic muting is only 

designed to protect against power line 

interruptions or severe voltage drop. It 

will not mute in the event of subsonic 

transmissions from a faulty input source, 

amplifier failure or speaker malfunction. 

A note about packaging... 

Save all packaging in a dry place away 

from fire hazard. Your Reference Phono 

3 preamplifier 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 Phono 3 

from unnecessary damage or delay.

Summary of Contents for Reference Phono 3

Page 1: ...Reference Phono 3 H I G H D E F I N I T I O N...

Page 2: ......

Page 3: ...er to begin listening however please take a few minutes to read through this guide for useful information concerning the operation of your new phono preamplifier Once installed please allow an appropr...

Page 4: ...7 8 9 9 9 9 9 Operation Front Panel Controls and Display Start Up Shut Down Break in Front Panel Controls Remote Only Functions Settings Menu System Settings Menu Tree Settings Menu Auto Shutdown Cart...

Page 5: ...the fuse only with the same type and rating as specified at the fuse holder see page 19 for fuse information This unit is RoHS compliant The Reference Phono 3 has automatic muting to help protect sys...

Page 6: ...r supply Proceed according to the following instructions Installation Remove all screws fastening the top cover Carefully remove each vacuum tube from its protective foam and match its location V numb...

Page 7: ...ded Audio Research recommends a minimum of 6 8 inches 15 20 cm of clearance above the Reference Phono 3 to maintain proper ambient operating temperature The ambient operating temperature should never...

Page 8: ...8 Connections A C Mains connector Fuse Holder RS 232 connector IR Input Phono Inputs Main Outputs Back Panel Connections...

Page 9: ...ower receptacles on other equipment Only use the power switch on the front of the Reference Phono 3 for On Off control of the preamplifier or the IR input RS232 or remote control RS 232 Input The RS 2...

Page 10: ...10 Operation Front Panel Controls and Display Vacuum Fluorescent Display Power On Off Menu Option used with Menu Input Mute Enter used with Menu...

Page 11: ...two minute warm up time is required for the circuit to come to an appropriate operating temperature as well as for the power supply to stabilize This is a normal function of the Reference Phono 3 Shut...

Page 12: ...otect your amplifier and speakers from unexpected signal pulses Remote Only Functions In addition to the controls found on the front panel the remote control offers access to the following additional...

Page 13: ...select the loading value nearest the cartridge manufacturers loading recommendation to begin with and then listen to alternate loading if desired Note that depending on the phono cartridge the volume...

Page 14: ...14 Operation System Settings Menu Tree...

Page 15: ...es of the front panel display The MENU OPTION and ENTER buttons found on the front panel and remote are used to make changes to the menu settings Note that the MENU button can also be used to back out...

Page 16: ...w setting will be displayed on the main screen Note Both the load and gain settings for each input can be changed directly from the remote control using the number buttons at the top and the HI GAIN a...

Page 17: ...appropriate brightness there is no need to press ENTER or any further buttons Note The remote control offers direct control of the display brightness via two buttons labeled DISP UP and DISP DN You ca...

Page 18: ...al 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 Cleaning To maintain the new appearance of this...

Page 19: ...bypassing the fuse will not only void the warranty in the event of damage but it could also cause serious system failure fire or personal injury A C Mains Fuse 120 V units 5A slow blow 220 240 V unit...

Page 20: ...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...

Page 21: ...ated Outputs 2V RMS 1V RMS SE into 200K ohm balanced load maximum balanced output capability is 30V RMS at less than 0 5 THD at 1kHz Controls 6 Push Buttons Power Menu Option Enter Input Mute Power Su...

Page 22: ...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 North Plymouth...

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