Preface
Please take time to carefully read and understand the
following instructions before you install or attempt
to operate your Audio Research Reference 5 stereo pre-
amplifier. Becoming familiar with the product and its
correct operating procedures will help assure you of maxi-
mum musical enjoyment and reliable operation. The effort
you invest now will be well rewarded in the years ahead.
Warnings
1.
To prevent fire or shock hazard, do not expose this
product to rain or moisture.
2.
This unit operates on voltages which can cause serious
injury or death. Do not operate with covers removed.
Any necessary servicing should be carried out by your
authorized Audio Research dealer or other qualified
electronics technician.
3.
The power cord on this unit is safety-tested and is
equipped with a proper grounding plug. If used normally,
it will provide a safe earth ground connection of the
chassis. Defeat of the grounding plug or replacement
of the plug or power cord, or any unauthorized modifi-
cation of the active circuitry or controls of this unit,
automatically voids warranty coverage, and could cause
injury or death.
4.
For safe operation and protection against fire hazard,
replace fuses only with those of the same type and
rating as those supplied with this unit.
Packaging
Save all packaging accompanying this product. You have
purchased a precision electronic instrument, and it should
be properly cartoned any time shipment becomes neces-
sary. It is very possible that this unit could be damaged
during shipment if repackaged in cartoning other than that
designed for it. The original packaging materials help
protect your investment from unnecessary damage, delay
and added expense whenever shipment of this unit is
required.
Note that your Ref 5 has been shipped with the vacuum
tubes installed in protective foam blocks under the top cov-
er. With the Ref 5 unplugged, use a phillips-head screwdriv-
er to loosen the fastening screws, remove the top cover and
set aside. Install the numbered tubes in their respective
sockets, refasten the top cover and store the foam blocks
with your carton.
Also, before operation, slowly remove white paper-covered
spacer pad with orange label, located beneath the (4) large
capacitors at the left rear corner of the circuit board. Save
the spacer pad and reinstall it before shipping unit.
Description of Controls
F ront Panel Rotary Contro l s
The Reference 5 has two microprocessor-driven rotary
controls.
The rotary control on the left adjusts Volume (output level)
up or down for both L and R channels. Volume control is
also selectable via Vol UP and Vol DN buttons on the
remote control. Volume adjustment is indicated in the
display window by both a bar graph with marker and by
numeric digits on 0 –103 scale.
Do not turn volume up beyond normal listening levels
when “mute” is engaged to avoid unexpected or possibly
damaging sound levels. Reduce volume level whenever
changing input sources, even when muted.
The rotary control (on the right) selects any of six input
sources connected to the preamp: CD, Tuner, Phono, Video,
Aux 1 and Aux 2. Each of these sources may also be select-
ed via direct access buttons on the remote control. The
selected source is indicated in the display window.
F ront Panel and Remote Control Buttons
POWER ON/OFF:
Supplies power from A.C. wall outlet to
preamp; indicated by active display window. Function
also on remote control.
Model Reference 5
1
TUBE LOCATIONS
TOP VIEW
REAR
FRONT
V 1
V 6
V 5
V 2
V 3
V 4
DO NOT ATTEMPT TO OPERATE THIS
EQUIPMENT BEFORE INSTALLING THE VACUUM
TUBES IN THEIR PROPER SOCKETS.
