Audio Research Reference Phono 3 Bedienungsanleitung
Reference Phono 3
H I G H D E F I N I T I O N ®
Thank You.
Thank you for choosing the
Reference Phono 3 to be a part
of your high performance music
listening system. Since 1970,
Audio Research has been creating
some of the world’s nest
audio equipment. Each piece is
handcrafted in Minnesota, and has
been designed to provide many
years of listening enjoyment.
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 new phono
preamplier. Once installed,
please allow an appropriate
break-in period to fully appreciate
the benets this preamplier
will provide to your system.
After reading the user guide, if
you have any further questions
regarding your phono preamplier,
contact your dealer or Audio
Research customer service - they
will be happy to help you make the
most of your new component.
Happy Listening!
4
Contents
Warnings
Installation
Before Operating the Reference Phono 3
In Your System
A Note about Vacuum Tubes
Connections
Back Panel Connections
Input Connectors
Output Connectors
Record Output
A.C. Power Connection
RS-232 and IR Input
5
6
7
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
Cartridge Settings
Tube Hours
Display Brightness
Equalization
10
11
11
11
12
12
14
15
15
16
16
17
17
Maintenance
Vacuum Tubes
Service
Cleaning
Disposal and Recycling Guidelines
Fuse Values and Locations
Warranty
Specications
18
18
18
18
19
20
21
5
Warnings
To prevent re 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 qualied 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 o, does not disconnect
all power from this unit. This unit
is in sleep mode when not on.
For continued protection against re hazard,
replace the fuse only with the same type
and rating as specied 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,
amplier failure or speaker malfunction.
A note about packaging...
Save all packaging in a dry place away
from re hazard. Your Reference Phono
3 preamplier 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.
6
Before operating the Reference Phono 3
Your Reference Phono 3 preamplier is
shipped with the vacuum tubes packed
in a separate foam-lined carton. These
must be unpacked and installed before
you attempt to operate the phono
preamplier. Included are six 6H30 tubes
for the analog stage, and a 6H30 and
6550WE used in the power 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’ number (written on the base
of the tube) to the ‘V’ number printed
next to each socket. Firmly seat each
tube in its matching socket, taking care
to ‘key’ the tube pins to the socket holes.
Retain the tube carton with other packing
materials for possible future use.
Refasten the top cover on the
phono preamplier.
V8
V7
V6 V4 V2
V5 V3 V1
7
Installation
In your system
To ensure normal component life and safe
operation this unit must be operated
only in an upright position. Adequate
airow and proper cooling can occur
only if there is no restriction above and
behind the unit and on either side.
The special non-marring elastomer feet
provide adequate spacing and stability
only on a smooth, hard surface, and also
assist to isolate the phono preamplier
from spurious vibrations. For upright
stability and best performance, never
operate the unit while it is sitting on a
soft surface such as a thick rug or carpet.
Due to its weight, this preamplier must
be supported on a surface specically
rated for such a load. Check with the
manufacturer of your support system to
be sure it is rated to handle this weight.
If the unit is to be operated in an enclosure
such as an equipment rack, make certain
that adequate airow above and to
each side of the unit is provided. 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 exceed 120° F or 49° C. Improper
installation will cause premature tube
failure and will aect your warranty,
as well as the service life of the unit.
It is normal for a vacuum tube preamplier
to run quite warm, and if used for
prolonged periods, hot to the touch.
All components within are, however,
operated at safe, conservative levels
and will not be improperly aected
thereby, providing the requirements
outlined above are adhered to.
A Note about Vacuum Tubes
The vacuum tubes in your Reference Phono 3
have been burned in, tested and electrically
matched to provide the best performance
and reliability of your preamplier. That
said, vacuum tubes must be replaced
from time to time. The 6H30 tubes in
the Reference Phono 3 should have an
expected life of approximately 4,000
hours, while the 6550WE tube in the power
supply should have a life expectancy of
approximately 2,000 hours. These life
expectancies are only approximate.
8
Connections
A.C. Mains connector
Fuse Holder
RS-232 connector
IR Input
Phono Inputs
Main
Outputs
Back Panel Connections
9
Connections
Input Connectors
The Reference Phono 3 provides two sets of
input connectors, labeled Input 1 and Input
2. Both input connectors are single-ended.
Output Connectors
Two pairs of balanced and single-ended
main outputs are provided. The outputs
are connected in parallel. If using both
outputs simultaneously, the combined
input impedance of the preamplier being
driven by the Reference Phono 3 must
be greater than or equal to 20k Ohms.
A.C. Power Connection
It is important that the Reference Phono 3
be connected via its supplied 20 amp IEC
12-gauge power cord to a secure, dedicated
A.C. power receptacle. Never connect to
convenience power receptacles on other
equipment. Only use the power switch
on the front of the Reference Phono 3
for On/O control of the preamplier, or
the IR input, RS232 or remote control.
RS-232 Input
The RS-232 input allows connection of
a control or automation system.
IR Input
The IR input allows a remote IR sensor or
repeater system to be connected to the
Reference Phono 3 for control purposes,
utilizing a standard mono 1/8” connector.
Important
Use the best available speaker wires
and interconnects. Audio Research
cannot emphasize this enough. As
better components and systems are
developed, it becomes increasingly
important to avoid the limitations of
inferior system interconnections.
It is important sonically that your entire
system be connected so that the audio
signal arriving at the speakers has correct,
or ‘absolute’ polarity (i.e., non-inverted).
10
Operation
Front Panel Controls and Display
Vacuum Fluorescent
Display
Power On/O
Menu
Option
(used with Menu) Input
Mute
Enter
(used with Menu)
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