Toa A-901A User Manual

Applications
Module
Types
Low Z MIC
with Low & High filters
H-01 series
Low Z MIC
with Low & High filters
and remote volume
control facilities
H-21
Low Z MIC
with Low & High filters
and MUTE
H-31
Microphone Preamplitier
Low Z MIC
with Low-cut filter
H-02 series
Low Z MIC
with Low-cut filter and remote volume
control facilities
H-22
Low Z MIC
with Low-cut filter
and MUTE
H-32
High Z MIC
with Low-cut filter
H-03 series
Mag. Phono
Preamplifier
E-01 series
Auxiliary
Preamplifier
X-01 series
with remote volume
control facilities
X-21
Bridging
transformer
B-01 series
Line Matching
Transformer
L-01 series
with Signal Activating
Mute
L-41
Paging Input
I-01
Tone Signal
Generator
1 kHz Sine Wave
Buzzer/Yelp
One Tone
Chime
Continuous Chime
S-01 S-02
S-03
Source
Impedance
Input Sensitivity
for Rated Output (100 mV)
Balanced 200 ohms
nominal 1.0 mV adjustable 0.25~25 mV
Unbalanced 50k ohms
nominal 3.2 mV
adjustable 0.8~8.0 mV
Unbalanced
50k ohms
nominal 3.2 mV
adjustable 2.0~5.0 mV
Unbalanced
220k ohms
nominal 100 mV
adjustable 100~3,200 mV
Balanced
10k ohms
125 mV
Balanced 600 ohms
125 mV 125
mV
Min. 15 mV to activate mute function
Balanced 600 ohms
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
Specifications
Max. Before Clip
into 10k-ohm load
at less than 0.5% THD
(1
kHz)
Output Voltage:
S-01, S-02, S-03
Frequency
Response
±1dB
6.3V(
+
16
dBv)
25~20,000 Hz
6.3V(+16dBv) 20~20,000 Hz 6.3V(+16dBv)
RIAA
Equalized
6.3V(+16dBv)
20~20,000 Hz
20~20,000 Hz 20~20,000 Hz
500~20,000 Hz Low-cut 250 Hz
0.5 V (–6dBv) 0.5% THD
1 V peak to peak
1V peak to peak
Noise level
equivalent
input noise
or S/N
Signal
Muting
Level
Remote volume
control range
Use 10k ohms
potentiometer
0~—60
dB
60 dB
-126
dBm
200 ohms
terminated
0~–60dB
60 dB
S/N 70dB
S/N 70dB
S/N 90dB
0~–60
dB
S/N 80 dB S/N 80 dB S/N 80 dB
Controls
pre-
settable
Weight
(max.)
105 gr
(3.71
oz)
1-Low
cut
1-High c u t 1-Gain
100 gr
(3.53
oz)
105 gr (3.70 oz) 100 gr
(3.53
oz)
1-Low
cut
1-Gain
95 gr
(3.35
oz)
105 gr
(3.70
oz)
1-Low
cut
1-Gain
60 gr
(2.12
oz)
1-Gain
50 gr
(1.76
oz)
70 gr
(2.47
oz)
1-Gain
65 gr
(2.29
oz)
90 gr
(3.17
oz)
90 gr
(3.17
oz)
1- Sensitivity
95 gr
(3.35
oz)
1-Mute 1-Gain
100 gr
(3.53
oz)
1-Output
55 gr
(1.94
oz)
1-Output
60 gr
(2.12
oz)
1-Output
70 gr
(2.47
oz)
Connector
H-01F
H-01M
H-01P
H-02F
H-02M
H-02P
H-03P
X-01F
X-01P
B-01F
B-01P
L-01F
L-01P
H-01S
H-21S
H-31S
H-02S
H-22S
H-32S
H-03R E-01R E-01S
X-01R
X-01S
X-21S
B-01S
L-01S
L-41S
I-01S
S-01S S-01S S-03S
FORNT PANEL CONTROLS AND FEATURES
Modules with built-in controls are provided in the following five
types.
- 6 -
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 D E LA Y
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.
- 7 -
* 0 dBv= 1 volt * Specifications are subject to change without notice.
SPECIFICATIONS IN COMMON
Load impedance : 10k-ohms
Mounting : Card-edge connector
Dimensions in mm (inches) : 78(3.07)x35(1.38)x88(3.46)
(H) x (W) x (D)
+ 2
dBm.
XLR-3-13(F)
Type
XLR-3-14(M)
Type
Phone Jack
(P)
RCA Phono
Jack (R)
3P Screw
Terminal(S)
5P Screw
Terminal
(S)
TOA NEW 900 SERIES
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)