Front Panel Controls And Features; Rear Panel Controls And Features - Toa A-901A Operating Instructions Manual

TOA NEW 900 SERIES

Front Panel Controls and Features

Item
Name
1
POWER ON-OFF Applies line power. Two-position
SWITCH pushbutton switch for on-off modes.
2 POWER
Illuminates when power is on.
INDICATOR
Green light-emitting diode.
(LED)
3 Turns to red when the output
exceeds just above the power rating.
MAX. OUTPUT
If continuous clipping prevails,
INDICATOR
appropriate volume controls should
(LED)
be adjusted until indicator remains
extinguished.
4 VOLUME Adjusts gain of INPUT #2.
CONTROL for Turn clockwise (CW) to increase gain.
INPUT #2
5 VOLUME Adjusts gain of INPUT #1.
CONTROL for Turn CW to increase gain.
INPUT #1
6 PROGRAM Adjusts gain of PROGRAM INPUT.
INPUT VOLUME Turn CW to increase gain.
CONTROL
Function/Description
- 1 -

Rear Panel Controls and Features

Item Name
1 AC POWER Connects to power source.
SUPPLY CORD
2 AC FUSE Protects amplifier from excessive
(250V, 0.75A) current drain. Replace only with same
type fuse. Refer to qualified service
personnel if fuse blows repeatedly.
3
OUTPUT Provide connections for speakers.
(See page 2)
TERMINALS
4
MODULE INPUT
Accepts one plug-in input module
PORT (INPUT #2)
accessory. Module selection is
5 MODULE INPUT
determined by application.
PORT (INPUT #1)
6
PROGRAM Serves as auxiliary input to accept SCA
INPUT tuner, etc.
7 Preadjusts gain of PROGRAM INPUT
INPUT LIMIT
VOLUME to limit excessive input.
CONTROL
8 TREBLE Adjusts treble response on PROGRAM
CONTROL INPUT and INPUT #1. INPUT #2 is
not influenced by this treble control.
Turn clockwise (CW) to boost and
counterclockwise (CCW) to attenuate
high frequency. Tone is flat at center.
9 BASS CONTROL Adjusts bass response on PROGRAM
INPUT and INPUT #1. INPUT #2 is
not influenced by this bass control.
Turn CW to boost and CCW to
attenuate low frequency. Tone is flat
at center.
10 MUTE By short-circuiting at this terminal the
TERMINAL signals fed to PROGRAM INPUT and
INPUT #1 are muted simultaneously.
The signals fed to INPUT #2 are not
muted.
11 Normally connects to a record
EARTH
TERMINAL player's ground.
Function /Description