Toa A-903A, Operating Instructions Manual, Page: 9 / 15

TOA NEW 900 SERIES
Plug-in Modules
Applications
Microphone
Preamplitier
Mag. Phono
Preamplifier
Auxiliary
Preamplifier
Bridging
transformer
Line Matching
Transformer
Low Z MIC
with Low & High filters
Low Z MIC
with Low & High filters
and remote volume
control facilities
Low Z MIC
with Low & High filters
and MUTE
Low Z MIC
with Low-cut filter
Low Z MIC
with Low-cut filter
and remote volume
control facilities
Low Z MIC
with Low-cut filter
and MUTE
High Z MIC
with Low-cut filter
———
with MUTE
with MUTE
with remote volume
control facilities
with MUTE
———
with MUTE
with Signal Activating
Mute
Paging Input
Line Output
Tone Signal
Generator
1 kHz Sine Wave
Buzzer/Yelp
One Tone Continuous
Chime Chime
Module
Types
H-01 series
H-21
H-31
H-02 series
H-22
H-32
H-03 series
E-01 series
E-11 series
X-01 series
X-11 series
X-21
B-01 series
B-11 series
L-01 series
L-11
L-41
I-01
T-01 series
S-01
S-02
S-03
Specifications
Source
Impedance
Balanced
200 ohms
Unbalanced
50k ohms
Unbalanced
50k ohms
Unbalanced
220k ohms
Balanced
10k ohms
Balanced
600 ohms
Balanced
600 ohms
[Output
Balanced
600 ohms]
Input Sensitivity
for Rated Output (100 mV)
nominal 1.0 mV
adjustable 0.25~25 mV
nominal 3.2 mV
adjustable 0.8~8.0 mV
nominal 3.2 mV
adjustable 2.0~5.0 mV
nominal 100 mV
adjustable 100~3,200 mV
125mV
125mV
125mV [Min. 1 5 mV to activate]
nominal 3.2V
adjustable 3.2~10V
Gain
nominal 40 dB
adjustable 52~32 dB
nominal 30 dB
adjustable 42~22 dB
nominal 34 dB
adjustable 34~26 dB
nominal 0 dB
adjustable 0~—30 dB
—1dB
—2dB
nominal — 30 dB
adjustable —30~— 40 dB
nominal 20 dB
(1.0V output)
adjustable 20~4 dB
(1.0V~158 mV)
Max. Before Clip
into 10k-ohm load
at less than 0.5% THD
(1 kHz)
[Output Voltage: ]
[S-01, S-02, S-03 ]
6.3V (+16 dBv)
6.3V (+16 dBv)
6.3V (+16 dBv)
6.3V (+16 dBv)
6.3V (+16 dBv)
4.7V (+13.4 dBv)
into 600-ohm load
0.5V (-6 dBv) 0.5% THD
1 V peak to peak
1 V peak to peak
Frequency
Response
±1dB
25~20,000 Hz
20~20,000 Hz
RIAA
Equalized
20~20,000 Hz
20~20,000 Hz
20~20,000 Hz
500~20,000 Hz
Low-cut 250 Hz
30~20,000 Hz
Noise Level
[equivelent]
[ Input noise]
[ or S/N ]
—126 dBm
200 ohms
terminated
S/N 70dB
S/N 70 dB
S/N 90 dB
———
S/N 80 dB
S/N 80 dB
S/N 80 dB
S/N 80 dB
Signal
Muting
Level
———
60 dB
60 dB
———
60 dB
———
60 dB
———
60 dB
———
60 dB
Remote volume
control range
[use 10k ohms]
[potentiometer]
———
0~— 60 dB
———
0~—60dB
0~—60 dB
Controls
[pre-
settable]
1-Low cut
1-High cut
1-Gain
1-Low cut
1-Gain
1-Low cut
1-Gain
1-Gain
1-Gain
1- Sensitivity
1-Mute
1-Gain
1-Output
1-Output
1-Output
Weight
(max.)
105 gr (3.71 oz)
100 gr (3.53 oz)
105 gr (3.70 oz)
100 gr (3.53 oz)
95 gr (3.35 oz)
105 gr (3.70 oz)
60 gr (2.12 oz)
50 gr (1.76 oz)
55 gr (1.94 oz)
70 gr (2.47 oz)
75 gr (2.65 oz)
65 gr (2.29 oz)
90 gr (3.17 oz)
95 gr (3.35 oz)
90 gr (3.17 oz)
95 gr (3.35 oz)
95 gr (3.35 oz)
100 gr (3.53 oz)
100 gr (3.53 oz)
55 gr (1.94 oz)
60 gr (2.12 oz)
70 gr (2.47 oz)
Connector
H-01F
H-02F
X-01F
X-11F
B-01F
B-11F
L-01F
H-01M
H-02M
T-01M
X-01P
L-01P
T-01P
E-01R
-11R
X-01R
-11R
H-02S
E-01S
X-01S
-11S
B-01S
L-01S
L-11S
L-41S
T-01S
S-01S
X-21S
I-01S
FORNT PANEL CONTROLS AND FEATURES
Modules with built-in controls are provided in the following five
types.
GAIN CONTROL
SENSITIVITY
CONTROL (L-41S)
NOMINAL POSITION
MARK
This adjusts gain. Turn clockwise (CW)
to increase and counterclockwise (CCW)
to reduce gain.
Set the gain as low as possible, thereby,
noise can be reduced, and the maximum
permissible input level is raised.
This adjusts sensitivity for muting other
modules having MUTE function. Turn
CW to raise and CCW to lower sensitivity.
Setting position should depend on the
equipment connected with L-41S.
The left figure shows nominal
setting of controls.
LOW-CUT FILTER
CONTROL
330Hz, 6dB/oct
(max. attenuation)
MUTE DELAY
CONTROL (I-01S)
HIGH-CUT FILTER
CONTROL
4.2kHz, 6dB/oct
(max. attenuation)
This provides flat characteristics at full
CW position and attenuation in low
frequency by turning CCW. Adjust it to
obtain proper tone quality. With low-cut,
tone becomes clear.
This adjusts MUTE delay time which is
the duration from signal input to its
output. Turn CW to shorten and CCW
to lengthen the time.
This provides flat characteristics at full
CW position and attenuation in high
frequency by turning CCW. Adjust it to
obtain proper tone quality. With high-
cut, tone becomes soft.
SPECIFICATIONS IN COMMON
Load impedance
Mounting
Dimensions in mm (inches)
(H) x (W) x (D)
: 10k-ohms
: Card-edge connector
: 78(3.07)x35(1.38)x88(3.46)
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