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Rated Output: Program: 35 Watts
Intercom:
Frequency
Program:
Response:
Intercom:
articulation.
Less than 3% @ 35 Watts: 100 to
Distortion:
10.000 Hz
Microphone:
Noise Level:
Radio/Phone:
:
Sensitivity
Microphone:
Radio/Phone: 100 mV
Tape In:
Intercom:
2 Microphones (Lo-Z, balanced or
Inputs:
unbalanced)
Radio
Phono
Tape In (Front Panel)
Program: 25 Volts balanced
outputs:
Intercom: 25 Volts balanced
Tape Out/Booster: 2 Volts
Switches:
Pushbutton Type: Microphone. Pro-
gram, Intercom, Emergency, and
Talk/Listen.
Program Send/Preset
Program Normal/All Call
Power On/Off
ADJUSTMENTS
(For Qualified Service Personnel Only)
CAUTION
The follo wing adjustments require removal
of the top cover. Use standard precautions
to prevent electric shock or accidental short
circuits within the unit.
OUTPUT METER ADJUSTMENT
This is a factory adjustment that normally is not re-
quired in the field. If a meter replacement is required, a
calibration adjustment may be needed. Proceed as
follows:
Feed a 1 kHz input signal in radio or phono jack.
Connect an A.C. V.T.V.M. across half the program
line (Pin 6 and 1 on output socket). With program
level control adjusted to read 12.5 volts on the
V.T.V.M., turn the meter control R102 (potenti-
ometer nearest to front panel) until the needle reaches
the black mark on meter scale.
EMERGENCY LEVEL ADJUSTMENT
This is a factory adjustment that sets the emergency
output level the same as the intercom output level. If it
is necessary to adjust this level, turn the level control
TECHNICAL SPECIFICATIONS
4 watts
100 to 20,000 Hz
2 dB
Shaped for best voice
- 5 0 dB
- 6 0 dB
300 µV
100 mV
4 mV
Controls:
Mic Volume (fader-MIC l/MIC 2)
Program Volume ( Radio/Phono-Tape
fader)
Intercom Level
Monitor
Tone Hi Cut/Flat
Illuminated output meter
Indicators:
D i m e n s i o n s
Width
(Inches & Cm):
MCT-I Control Panel
Series 15-l (I5T-1)
Consolettes
Series 15-2 Consolette 40½( 102.9)
22(55.9)
Series 15-3 Console
Back and Sides-Satin Mocha
Finish:
Control Panels-Desert Beige
Optional
Model SBL Switch Banks, for use
Equipment:
with visual and audible annunication.
Model SST-
ule, for classroom change signals.
Room switches, for use with intercom:
Model CA-IO Call switch. Model
CA- I I Call/Privacy switch, Model
CA-13 Voice Call-In switch.
RlOl (potentiometer furthest from front panel) clock-
wise to increase output.
REPLACING COMPONENTS
All semiconductor components on the printed circuit
board are soldered in place to ensure maximum reliabil-
ity. When soldering or unsoldering transistors or
diodes, use a heat sink (such as a small alligator clip)
between the component and the source of heat. When
replacing driver and output transistors (QlO-Qll), be
certain to install the collector insulator, after lightly
coating both sides with a thermal conducting compound
(such as Dow Corning No. 340, or equivalent).
REPLACEMENT PARTS
Most components used in Bogen equipment are
standard parts available through reputable parts deal-
ers. This section lists those parts which should be re-
placed with genuine Bogen parts, available through
Bogen distributors, service agency or directly from the
factory.
When ordering a part, give the part number and de-
scription as listed below. Specify the model of the unit.
For parts in the MCT-1 control chassis, specify the
series designation, which is a letter followed by numbers
and is stamped or screened on the rear of the chassis.
-8-
Depth
Height
I
5¼( 13.3)
l½(29.2)
l9(48.3)
21¼(54)
16(40.6)
16(40.6)
I6(40.6)
I6(40.6)
3 l(78.7)
46(116.8)
1
A Single-Circuit Mod-
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