Audio Research LS17 SE, Руководство пользователя

Страница: 7 / 10

7
Description of Controls
The LS17 SE has two microprocessor-driven rotary
controls.
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
volume LEDs numbered 1–20.
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 five
input sources connected to the preamp: CD, Tuner,
BAL 1, BAL 2and 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.
Front Panel and LS17R 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.
For approximately 50 seconds after start up, ‘Mute’
LED flashes until the automatic muting cycle is
completed. This also occurs in the event of power
interruption. Upon completing the cycle, ‘Mute’ will
cease flashing. The pre-amp will remain muted until
normal operation is selected by pressing the ‘Mute’
button.
MUTE: When activated, electrically mutes all output
of the preamplifier; indicated by lit ‘Mute’ LED. This
control should be activated before switching inputs,
changing connections or shutting down your audio
system to help protect your amplifier and speakers
from unexpected signal pulses. When deactivated,
‘Mute’ LED shuts off in the display window allowing
normal operation. Function also on remote control.
The LS17 SE also has automatic muting to help
protect system components during A.C. power
interruptions or low line voltage. When sensing
these conditions, the preamp automatically goes
into “Mute” and disables all outputs. The 50-second
warm-up timer will restart and ‘Mute’ LED will flash in
the display window when normal power conditions
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,
amplifier failure or speaker malfunction.
PROCESSOR (PROC): May be selected by button on
front panel or on remote control. Selects external
A-V (home theater) processor as input source and
controller of volume level for R and L channels.
LS17 SE provides Unity Gain when this input is
selected.
When engaged, ‘PROC’ LED will be lit and the
volume control is not adjustable because gain is
fixed. The preamp will also mute the input after
‘PROC’ is engaged.
WARNING:
Before unmuting the ‘PROC’ input, be
sure to turn the volume down on the
home-theater processor. Never
connect a source with a fixed level
output (DVD player, tuner, CD, etc.) to the ‘PROC’
input or the amplifier(s) and speaker system could
be damaged when the LS17 SE is unmuted.
VOLUME UP/DOWN : Increases/decreases overall
volume level of both channels equally for
whichever input has been selected. Caution: do
not turn up volume beyond normal listening levels
when ‘Mute’ is engaged to avoid unexpected or
possibly damaging sound levels. It is a good idea
to reduce volume whenever changing program
sources, even when muted. Function available on
remote control buttons and front panel rotary
control on left.
MONITOR: Selecting Monitor (‘Monitor’ LED lights)
routes Monitor input signal to the Main outputs.
The input selector indicates what is routed to the
Record out. To exit the monitor position and return
to program source controlled by input selector (CD,
Tuner, Aux, etc.), press monitor switch again.
Monitor function also on remote control.
Connections
INPUT CONNECTORS: The LS17 SE provides two pairs
of BAL input connectors (BAL 1 and BAL 2) and five
sets of SE input connectors (Aux, Tuner, CD,
Processor and Monitor).
OUTPUT CONNECTORS: Two pairs of BAL and one
pair of SE main outputs are provided.
RECORD OUTPUT: The SE Record outputs should be
connected to your recorder's “Record” or “Line”
inputs. These outputs provide a fixed-level two-
channel signal (R, L) to your recorder from
whichever input is selected. The non-variable
output level will be the same as the output of the
selected source.
It is possible to dub or copy from one recorder to
another by connecting the output of the source
recorder to an unused set of stereo inputs (Aux 1,
Aux 2). The signal will then be routed to the Record
Out connectors when that input source is selected.