Audio Research LS17 SE, Руководство пользователя

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12V IN/OUT REMOTE START JACKS: The +12V DC
input/output jacks provide the ability to remotely
turn on and off the preamp and other linked
components such as power amplifiers having similar
capabilities.
Installation Instructions
While the LS17 SE does not dissipate an unusual
amount of heat, it is important that it be provided
with 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.
Operate unit in upright and horizontal position,
prefer-ably on solid, non-metal shelving.
2. Do not stack the preamp on top of a power
amplifier: not only could this cause overheating,
but hum may be introduced into the preamp
from the proximity of the amplifier's power
transformer. Do not stack components or other
objects directly on top of the LS17 SE.
3. Do not place or operate your preamp on a soft
or irregular surface such as a rug. This will
prevent proper ventilation.
4. Do not operate your preamp without the top
and bottom covers installed. These are required
both for safety as well as shielding from
interference (except in service operations by
qualified personnel).
Operating Procedure
Start Up:
1. Secure all rear-panel connections between
LS17 SE, power amplifier(s) and input sources.
2. Plug three-prong power cord from rear of
chassis into grounded A.C. wall outlet. The
Power switch defaults to’off’ when the unit is
plugged into a power receptacle.
3. Press power switch (either remote or front
panel). ‘Mute’ LED will flash in the display
window for approximately50 seconds, then
cease flashing and remain on. Press’Mute’ to
initiate operation.
4. Select input source, then BAL or SE as necessary.
Shut Down:
1. Activate ‘Mute’ function.
2. Set Volume level to minimum.
3. Turn off power amplifier(s).
4. Press Power switch to ‘off’.
5. Turn off input sources.
Tape Recording Procedure
When using the LS17 SE as a control center for
recording, the program source to be recorded must
be connected to one of the five inputs controlled
by the Input selector switch or to the Processor
input. This routes the selected program to the
Record output.
Note: If the Processor input is activated by
selecting the ‘Processor’ switch position, all other
inputs will be deactivated. When recording from
the Processor input to the Record out of the LS17 SE,
the level of the recording will be dependent on the
level setting of the processor.
If you own a three-head tape deck, and wish to
monitor the actual tape while making a recording
(for a true ‘A-B’ comparison of signals before and
after recording), connect the tape deck output to
the Monitor input.
It is also possible to dub from one tape deck to
another. Simply connect the output from one tape
deck to an un-used set of inputs controlled by the
Input selector (Tuner, Phono, CD, etc.) on the LS17
SE. This signal will then be routed to the second
tape deck through the Record output when the
appropriate input is selected on the Input selector.
Troubleshooting
It is possible for a static discharge to temporarily
disable the microprocessor that allows the controls
to function. If this should occur, depress the ‘Mute’
button, then turn off the preamp and unplug the
preamp from the A.C. receptacle for 60 seconds.
Reconnect the A.C. plug and turn the preamp
back on, along with other components. The
controls should resume normal operation. If the
problem persists, contact your dealer or Audio
Research Customer Service at 763-577-9700.
Servicing
Because of its careful design and exacting
standards of manufacture, your LS17 SE should
require no routine maintenance. The remote
control's batteries (AAA) should be replaced once
a year.
CAUTION: Your LS17 SE contains sufficient levels of
voltage and current to be lethal. Do not tamper
with a component or part inside the unit. Refer any
needed service to your authorized Audio Research
dealer or other qualified technician.
The vacuum tubes inside your LS17 SE are quality
6H30 dual triode tubes and with normal use should
not need to be changed for approximately 4,000
hours of use. Replacement tubes should be of
equivalent quality and are available from Audio
Research. Note that tube numbers (V1 and V2)
match printed numbers next to tube sockets on
circuit board.
Should service be necessary, please contact your
Audio Research dealer, or Audio Research
Customer Service at 763 577-9700.