6
The display will indicate the currently selected load
resistance for each input setting. It is suggested
that you select the loading value nearest the
cartridge manufacturers loading recommendation
to begin with and then listen to alternate loading if
desired.
Because all Reference Phono 2 SE front panel
functions are duplicated on the remote, you may
listen to loading sonic changes from the listening
position by selecting different loads via their
individual buttons on the remote. (Note that
depending on the phono cartridge the volume
level may decrease as lower loading values are
selected.)
RIAA:
Selects between RIAA, early COLUMBIA
stereo and early DECCA stereo LP phono
equalization curves.
Remote Control Functions
In addition to all of the front panel functions, the
remote also accesses the following functions:
DISPLAY DOWN/DISPLAY UP (DSP DN/DSP UP):
Decreases/increases display intensity, offering 6
levels of brightness and display ‘off’. If display ‘off’
is selected, a small pilot light remains illuminated in
the center of the display window as a reminder the
unit is turned on. In display ‘off’ mode the display
will illuminate for 10 seconds when any button
(except Power on/off) is selected, allowing for
control function navigation.
HOURS:
When pressed, displays number of
operating hours vacuum tubes have been in
service. WARNING: after replacing tubes, this
function should be reset to ‘0’ only by a qualified
technician. Hours display can be reset to ‘0’ by
pressing square black button located on upper
right corner of vertical circuit board directly behind
display window inside of the chassis. The preamp
must be ‘On’ to reset function – the service
technician must be careful to avoid any contact
with other circuit components during reset
operation. Contact Audio Research customer
service (763-577-9700) for information regarding this
procedure.
Connections
INPUT CONNECTORS:
There are two sets of RCA
input
connectors,
for
connecting
multiple
turntable/tonearm cables.
OUTPUT CONNECTORS:
There is one set of BAL and
one set of RCA output connectors for connecting
to line inputs (Direct, Aux, Phono, Tuner, etc.) of
your linestage/preamplifier.
All input/output connectors are gold plated and
connect ‘ground’ before ‘hot’. On disconnect,
‘hot’ is disconnected first.
Note:
A ‘passive’ line stage is not recommended for
use with the Reference Phono 2 SE as it may not
provide the gain necessary to amplify the output of
the Reference Phono 2 SE to adequate levels to the
power amplifier.
Installation Instructions
While the Reference Phono 2 SE does not dissipate
an unusual amount of heat, it is important that it
have a reasonable airflow to assure long, trouble-
free operation.
In addition, the following installation guidelines will
help insure maximum sonic performance as well as
reliable service.
1.
Upright and horizontal mounting is required if
extended operation (longer than one hour) is
contemplated.
2.
Do not ‘stack’ the Reference Phono 2 SE on top of
other equipment: not only could this cause
overheating, but ‘hum’ may be introduced into
the phono circuits from the proximity of the power
transformer of the other equipment.
3.
Do not place or operate unit on a soft or irregular
surface such as a rug. This will prevent proper
ventilation.
4.
Do not operate unit without the top and bottom
covers installed. These are required both for safety
as well as shielding from interference (except in
service operations).
5.
If side-by-side mounting with other equipment is
employed, place the Reference Phono 2 SE to
the left of the other chassis, so as to provide
maximum spacing between the transformer of
the Reference Phono 2 SE and the other
component.
6.
In a cabinet or rack-mount installation which has
an enclosed back, an exhaust fan is desirable so
as not to operate the Reference Phono 2 SE in
overheated ambient air. Operation of vacuum
tube equipment for long periods of time in hot
ambient air will shorten tube life and increase
chance of failure of other component parts.
Summary of Contents for Reference Phono 2 SE
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