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TOA ALL-PURPOSE AMPLIFIER
Front Panel Controls and Features
Item
Name
1
POWER
Applies line power. Two-position
ON-OFF
pushbutton switch for on-off modes.
SWITCH
2
POWER
Illuminates when power is on.
Green light-emitting diode.
INDICATOR
(LED)
3
VOLUME
Adjusts gain of MIC or TELEPHONE
page Input.
CONTROL
FOR MIC OR
Turn clockwise to increase gain.
TELEPHONE
PAGE.
4
PROGRAM
Adjusts gain of PROGRAM Input.
INPUT
Turn clockwise to increase gain.
VOLUME
CONTROL
Rear Panel Controls and Features
Name
Item
1
AC POWER
Connects to power source.
SUPPLY
CORD
AC FUSE
Protects amplifier from excessive
2
current drain. Replace only with same
(250V, 0.5A)
type fuse. Refer to qualified service
personnel if fuse blows repeatedly.
Provide connections for speakers.
3
OUTPUT
TERMINALS
(See "Output Connections")
Provides AC power to auxiliary equip-
4
AC OUTLET
ment having power consumption of up
(Unswitched)
to 500W.
Balanced Transformer Input.
5
PROGRAM
10k ohms.
INPUT
(Screw
Terminal)
Unbalanced Input. 10k ohms. Serves as
6
PROGRAM
auxiliary input to accept SCA tuner, etc.
INPUT
Note; Either of the two program inputs
(RCA phono
jack)
is to be used. Do not use the two inputs
at the same time.
MUTE
When short-circuited between the Mute
7
and Ground ( E ) terminals, the micro-
phone or telephone page input overrides
the program input.
Refer to "Muting for details.
Balanced Transformer Input. 600 ohms.
8
MIC/TEL
INPUT
Function/Description
Function/Description
Item
Name
MIC/TEL
To be selected according to the program
9
SELECTOR
source connected to the MIC/TEL input
SWITCH
terminals.
TREBLE
Adjusts treble response on PROGRAM
10
CONTROL
INPUT. MIC/TEL INPUT is not
influenced by this treble control.
Turn clockwise (CW) to boost and
counterclockwise (CCW) to attenuate
high frequency. Tone is flat at center.
11
BASS
Adjusts bass response on PROGRAM
CONTROL
INPUT. MIC/TEL INPUT is not
influenced by this bass control.
Turn CW to boost and CCW to
attenuate low frequency. Tone is flat
at center.
12
GROUND ( E )
Should be grounded.
TERMINAL
Input Connections
PROGRAM INPUT CONNECTION
Screw terminal (10k-ohm, balanced)
PROGRAM
RCA phono plug
MIC/TEL INPUT and MUTE CONNECTION
MUTE MIC/TEL
or
MUTE MIC/TEL
E
COM HOT
Output Connections
Output transformer taps provide connections for 4-ohm and 8-ohm
speakers, plus 70-volt (490-ohm) and 25-volt (62-ohm) speaker dis-
tribution outlets. Class 2 wiring may be used. Connect to the
terminal of desired impedance and COM (common).
Connect speakers to
one of these output.
Note: Impedances indicated above imply total speaker
system impedances.
Function/Description
Input source
Input source such
as SCA tuner
MIC
Switch
Input source
Switch
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