Audio Research LS28, Руководство пользователя

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9
Connections
Input Connectors
The LS28 provides eight pairs of input
connectors; four balanced and four single-
ended, labeled BAL 1-4 and SE 1-4.
Output Connectors
Two pairs of BAL/SE main outputs are
provided. The outputs are connected
in parallel. If using both outputs
simultaneously, the combined input
impedance of the amplifier(s) being
driven by the LS28 must be greater
than or equal to 20k Ohms.
Record Output
The record output should be connected to
your recorder’s ‘Record’ or ‘Line’ inputs.
These outputs provide a fixed-level two-
channel signal (left and right) 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. The signal will then
be routed to the Record Out connectors
when that input source is selected.
Warning
Do not connect the record output directly to
an amplifier. This will send full output (with
no volume attenuation) to the amplifier(s),
and could cause serious serious damage
to the amplifier(s) or loudspeakers.
A.C. Power Connection
It is important that the LS28 be connected
via its supplied 15 amp IEC 14-gauge
power cord to a secure, dedicated A.C.
power receptacle. Never connect to
convenience power receptacles on
other equipment. Only use the power
switch on the front of the LS28 for On/
Off control of the preamplifier, or the
IR input, RS232 or remote control.
RS-232 Input
The RS-232 input allows connection of
a control or automation system.
IR Input
The IR input allows a remote IR sensor
or repeater system to be connected to
the LS28 for control purposes, utilizing
a standard mono 1/8” connector.
12V Trigger Out
The +12V DC trigger out jack provides
the ability to remotely turn on and off
other linked components such as power
amplifiers having similar capabilities.
Important
Use the best available speaker wires
and interconnects. Audio Research
cannot emphasize this enough. As
better components and systems are
developed, it becomes increasingly
important to avoid the limitations of
inferior system interconnections.
It is important sonically that your entire
system be connected so that the audio
signal arriving at the speakers has correct,
or ‘absolute’ polarity (i.e., non-inverted).