Toa A-901A User Manual

H-31 and H-32 (with mute)
Connections
Remoto switch
Mute
Terminal
Operation
A built-in MUTE circuit of the A-901A mutes signals fed to both
PROGRAM INPUT and INPUT PORT #1 at the same time when
the above remote switch is closed.
Ensure that the INPUT PORT #2 is used when mounting the
H-31 or H-32 on the A-901A. Closing the remote switch causes
signals fed to the H-31 or H-32 to be supplied to the power
amplifier stage.
(While the switch is opened, the signals are attenuated.)
Performance of the MUTE circuit
MUTE Terminal
Opened
Closed
Signals fed to
INPUT PORT #2
with H-31 or H-32
Attenuated(Muted)
Supplied to the
power amp stage
Signals fed to
PROGRAM INPUT
and INPUT PORT #1
Supplied to the
power amp stage
Attenuated (Muted)
L-41 (with signal activated muting facilities)
When this module accepts the input signal, the mute terminal is
grounded automatically without connection of the remote switch
to the MUTE TERMINAL. As a result, signals fed to both PRO-
GRAM INPUT and INPUT PORT #1 are muted.
Ensure that the INPUT PORT #2 is used when mounting the
L-41 on the A-901. When installed into INPUT PORT #1, it does
not work.
H-21, H-22 and X-21 (Remote volume control facilities)
Connections
Potentiometer
10k
Remote
volume
control
Input Connection
Operation
Preset the gain control of module and the input volume control of
the corresponding input so that an appropriate sound level may be
obtained through the remote volume control.
CAUTION
Use the potentiometer of 10K ohms.
Make wiring lest the interference from external noise
should occur.
- 9 -
S-01 (1,000Hz SINE WAVE)
Connections
Remote switch
It is operated by closing the remote
switch.
S-02 (YELP AND BUZZER)
Connections
Yelp signal
Remote switch
Buzzer signal
Each signal is generated by closing cor-
responding remote switch.
Remote switch
S-03 (ONE-TONE CHIME AND CONTINUOUS ONE-TONE
CHIME)
CONNECTIONS
One-tone chime
Remote switch
By closing the remote switch, chime
sounds once.
Continuous one-tone chime
Remote switch
By closing the remote switch, one-tone
chime sounds continuously during the
closure of the switch.
Operation and Connections (Plug-in Modules)

Toa A-901A Specifications

Power

output power	10 watts RMS
power consumption	30 watts
voltage	AC 120 volts, 60 Hz

Operating Environment

temperature range	-10°C to +60°C (12°F to 140°F)
frequency response	20—20, 000 Hz, ± 1 dB
signal-to-noise ratio	82 dB

Weight and Dimensions

height	3.98" (101 mm)
width	9.84" (250 mm)
depth	9.65" (245 mm)
weight	8.6 lbs (3.9 kg)