Specifications

Model DSi200
1
Preface
Please take time to carefully read and understand the fol-
lowing instructions before you install or attempt to operate
your Audio Research DSi200 integrated preamplifier.
Becoming familiar with the product and its correct operat-
ing procedures will help assure you of maximum 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 14-gauge power cord supplied with 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 use of a power cord without a grounding plug, or any
unauthorized modification of the active circuitry or
controls of this unit, automatically voids warranty cover-
age, 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 pro-
tect your investment from unnecessary damage, delay and
added expense whenever shipment of this unit is required.
Accessories
Spare Fuses:
2 – 6 Amp MDQ slo-blo (100 & 120v)
2 – T 3.15A Super-Time-Lag TT (220 -240V)
Description of Controls
F ront Panel Rotary Contro l s :
The DSi200 has two microprocessor-driven rotary
controls.
Vo l u m e
The rotary control on the left adjusts Volume (output level)
up or down for both R and L channels. Volume control is
also selectable via Vol DN and Vol UP buttons on the
remote control. Volume adjustment is indicated in the
display window 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.
Input
The rotary control on the right selects any of 5 input
sources connected to the DSi200: Bal 1, Bal 2, CD, Tuner
and Aux. Each of these sources may also be selected 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
DSi200; indicated by active display window. Function
also on remote control.
For approximately 5 seconds after start up, “Mute”
appears in the display window and flashes until the auto-
matic muting cycle is completed. This also occurs in the
event of power interruption. Upon completing the cycle,
“Mute” will cease flashing. The DSi200 will remain muted
until normal operation is selected by pressing the “Mute”
button.
MUTE: When activated, electrically mutes all output of the
DSi200; indicated by “Mute” in display window. This con-
trol should be activated before switching inputs, changing
connections or shutting down your audio system to help
protect your speakers from unexpected signal pulses.
When deactivated, “Mute” disappears from the display win-
dow allowing normal operation. Function also on remote
control.
The DSi200 also has automatic muting to help protect sys-
tem components during A.C. power interruptions or low
line voltage. When sensing these conditions, the unit
automatically goes into “Mute” and disables all outputs.
The 5-second warm-up timer will restart and “Mute” will
flash in the display window when normal power condi-
tions have been restored.
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 or speaker malfunction.