Power Output:
C
1
0(MOH)
–
1
0 WRMS
C20(MOH)
–
20 WRMS
Distortion:
Less than
1
% @ RPO
Frequency Response:
70Hz to
1
6kHz ±
1
dB
Hum and Noise:
MIC
–
55dB below rated output
AUX
–
70dB below rated output
TEL
–
70dB below rated output
Input Sensitivity:
MIC
–
Lo-Z Balanced 600µV
AUX
–
85mV (
1
0k-ohms)
TEL
–
75mV (600
Ω
)
Outputs:
4-, 8-,
1
6 ohms, 25V, 70V
MOH:
Output 600
Ω
@
1
V or 8
Ω
@
1
W
Output Connections:
Screw terminal strip
Input Connections:
Two MIC Lo-Z terminals,AUX Hi-Z jack,TEL terminals
Controls:
MIC
1
, MIC2/AUX (switch selected),Treble,TEL,VOX, Power
Tone Control:
TREBLE, -
11
dB @
1
0kHz (cut only)
Power Requirements:
1
20V AC, 60Hz
C
1
0(MOH)
–
38 watts
C20(MOH)
–
50 watts
Dimensions:
11
-3/8" W x 2-7/8" H x 7-3/8" D
Shipping Weight:
C
1
0(MOH)
–
5 lbs.
C20(MOH)
–
6 lbs.
Technical
Specifications
The public address amplifier shall be a Bogen Model
_________, or approved equivalent, with a full power
rating of _______watts. (Specify: C
1
0(MOH)/
1
0 watts
or C20(MOH)/20 watts.) The frequency response shall
be 70Hz to
1
6kHz ±
1
dB, with less than
1
% distortion at
rated power output. Input sensitivity shall be 600µV for
low-impedance balanced microphones, 85mV for auxiliary
inputs, and 75mV for the telephone input. Hum and noise
shall be 55dB below rated output for the MIC input, and
70dB below rated output for the AUX and TEL inputs.
The amplifier shall provide simultaneous mixing of two
low-impedance balanced microphones and one telephone
input; or one microphone, one auxiliary input, and one
telephone input. The unit shall have a front panel selector
switch which shall allow one of the input channels (MIC
2/AUX) to be selected for use as a microphone or an
auxiliary input. It shall be possible to mute the auxiliary
input when a customer-supplied SPST switch is attached
to the AUX MUTE terminals on the rear panel.
The TEL input shall provide signal-activated paging with
muting of the AUX channel. A VOX threshold control
shall be included to eliminate activation of the channel by
noise on the telephone line. The threshold control and
TEL volume control shall be located on the rear panel.
The microphone inputs shall be equipped with filters to
protect against RF interference. Independent volume con-
trols and a treble cut control (-
11
dB @
1
0kHz) shall be
incorporated.
The amplifier shall provide output impedances of 4-, 8-,
and
1
6-ohm speaker systems as well as for 25V and 70V
constant voltage systems.
(This paragraph applies to MOH units only).
A music-
on-hold output shall be provided from the aux input
source. The output shall be unaffected by paging. Screw
terminal connections shall be provided at 600
Ω
@
1
volt
and 8
Ω
@
1
watt. A level control shall be provided on
the rear panel.
The amplifier shall contain a self resetting thermostat in
the power transformer to protect against heat build-up
and short circuited or overloaded connections.
The amplifier shall be mountable in
1
9-inch equipment
racks, using an optional rack panel kit (Bogen Model
RPK35B), or in a flush-in-wall mounting cabinet with tilt-
out locking panel (Bogen Model WMK
1
). Dimensions
shall be
11
-3/8" W x 2-7/8" H x 7-3/8" D. Shipping weight
shall be 5 lbs. for Model C
1
0(MOH) and 6 lbs. for Model
C20(MOH).
Architect
and Engineer
Specifications
50 Spring Street, Ramsey, New Jersey 07446, U.S.A.
Tel. 20
1
-934-8500; FAX: 20
1
-934-9832; www.bogen.com
MOH VERSION ONLY
BOGEN
MOH OUTPUT
1VOLT
600 OHM
1W
8 OHM
GND
OUTPUT LEVEL
MOH
TEL
VOX
AUX
TEL
GND
LO-Z
GND
LO-Z
AUX
MIC1
MIC2
MUTE
50W
60HZ
120VAC
W
0
0
3
MAX
AUX POWER
70V
25V
16
8
4
COM
GND
