Service manual

VI.
1K-112
SPECIFICATIONS
AMPLIFIER
DESIGN
Solid-state,
integrated
circuit
amps
including
a
mic
preamp,
speaker
power
amp,
signalling
circuit,
logic
control
circuit.
Current-limited
with
short-circuit
and
reverse
polarity
protection.
MIC
PREAMPLIFIER
GENERAL
SPECS
Freq.
Response:
200-12k
Hz,
con-
Station
Bridging
toured
to
enhance
intelligibility
Impedance:
18k
ohms
(200-10k
Hz)
Mic
Preamp
Gain:
Power
Requirements:
25
dB,
low
sensitivity
17
ma
quiescent,
60
ma
average
talk
31.5
dB,
high
sensitivity
60
ma
signalling,
60
ma
remote
con-
Mic
Type:
electret
trol,
200
ma
short
circuit
Voltage
Range:
12-32v,
28v
nominal
SPEAKER
AMPLIFIEU
Line
Level:
I
dB
max
Speaker
Type:
3"
round,
16
ohm
Signal
Voltage:
11VDC
on
audio
line
Power
Output:
2
watts
into
16
ohms
Call
Light
Sensitivity:
4
volts
Freq.
Response:
100-15k
Hz,
±
3
dB
Aux.
Input
Impedance:
500k
ohms
Signal-to-Noise:
75
dB
Aux.
input
Level:
.7v
for
max
ouput
Equivalent
Input
Noise:
121
dB
Line-to-Speaker
Gain:
30.5
dB
Distortion:
0.5%
THD
at
Ik
Hz
DIMENSIONS
(front
panel):
Speaker
Level:
98
dB
@
3
feet
8.6"
wide
x
6.5"
high
x
1.4"
deep
NOTE:
"WHILE
CLEAR-COM
MAKES
EVERY
ATTEMPT
TO
MAINTAIN
THE
ACCURACY
OF
THE
INFORMATION
CONTAINED
IN
ITS
PRODUCT
MANUALS.
THE
INFORMATION
IS
SUBJECT
TO
CHANGE
WITHOUT
NOTICES
9