Toa A-903A - Rear Panel Controls and Features; Rear Panel Connectivity and Features

A-903A
A-906A, A-912A
Item
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Name
AC POWER
SUPPLY CORD
AC OUTLET
(Unswitched)
AC FUSE
OUTPUT FUSE
OUTPUT TERMINALS
MODULE INPUT
PORTS
LOW-CUT SWITCH
LINK SWITCH
AUX OUT
POWER AMP IN
PREAMP OUT
BRIDGING INPUT/
OUTPUT
MUTE TERMINAL
EARTH TERMINAL
Function/Description
Connects to power source.
Provides AC power for auxiliary equipment with
power consumption of up to 500W.
Prevents excessive current flow.
(A-903A) (A-906A) (A-912A)
AC FUSE 250V 2A 250V 3A 250V 5A
OUTPUT FUSE 250V 3A 250V 6A 250V 10A
Connect to speakers.
Accept PLUG-IN MODULES which are optionally
available. Module selection is determined by
application.
Cuts off unnecessary low frequency.
Disconnects between preamplifier and power amplifier
when this switch is turned to the "OUT" side, and
other equipment can be connected.
Provides connections for a booster amplifier or a tape
recorder. The input impedances of the equipment
should be of more than 10k ohms.
When using this terminal, set LINK SWITCH to "OUT"
position.
Connects to a signal processing equipment such as a
limiter, an equalizer etc. The input impedances of the
equipment should be of more than 600 ohms.
In this case, the LINK SW should be set in the "OUT"
position.
This terminal is used as a mixing bus. Mixina is achieved
when the similar terminal of another amplifier is
connected to this terminal. The output level taken from
this terminal is independent of the MASTER VOLUME
CONTROL, BASS and TREBLE CONTROLS so that the
terminal can also be used as recording output. The
input impedances of the equipment to be connected
here should be of more than 10k ohms.
With modules employing muting function, which are
optionally available, the input signals fed to the
modules are muted by short-circuiting at this terminal.
Normally connects to a record player's ground.
Rear Panel Controls and Features
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