Bogen C10B - Manual (Page 3)

OPERATION
POWER: The front panel on-off switch applies power to the
amplifier. It has no effect upon equipment connected to the
auxiliary receptacle on the rear panel. The switch illuminates to
indicate that power is on.
MIC 1,2: The MIC2/ AUX selector switch should be in the MIC2
mode. The MIC controls are used to adjust the volume of the
microphone inputs. Rotate the control clockwise to increase
volume or counterclockwise to decrease volume. When micro­
phone is not in use, be certain to turn control to minimum position.
AUX: Set the MIC 2/AUX selector switch to AUX. The AUX
control is used to adjust the volume of the auxiliary input. Rotate
the control clockwise to increase volume and counterclockwise to
decrease volume. Rotate the control to the minimum position
when auxiliary input is not used.
MICROPHONE PRECEDENCE: A built-in circuit provides
muting of the AUX channel. Connections are made from an
external switch to the AUX MUTE terminals. An SPST
normally-open switch is required for this function. When contacts
are closed, the AUX channel is muted.
TREBLE: Use the TREBLE control to adjust the tonal balance of
the amplifier output.
ACCESSORIES
WMT-l LINE-MATCHING TRANSFORMER: The Bogen
WMT-1 Line-Matching Transformer provides an impedance
match between the amplifier and a 0 level, 500/ 600 ohm line. This
may be a telephone line connected to the switchboard for internal
paging or used with a wired music system. No soldering is required
to connect the WMT-1 to the amplifier.
To connect the input from a balanced 500/600 ohm telephone
line, mount the WMT-1 on the rear panel of the amplifier, using
the holes indicated on the rear panel. Connect the input line to the
three-screw terminal board on the WMT-1. Connect the phono
plug on the WMT-1 cable to the AUX jack on the rear of the
amplifier. If this jack is being used for other auxiliary equipment,
the WMT-1 may be connected to the MIC input. In order to do
this, the WMT-1 wiring must be modified as described in the
instruction sheet supplied with the WMT-1.
WMK-1 IN-WALL MOUNTING KIT: The Bogen Model
WMK-1 In-Walt Mounting Kit is designed to mount the amplifier
flush in a wall. Depth of the mounted unit is 3V4 inches.
MODEL RPK-35B RACK PANEL KIT: The RPK-35B rack
panel is designed to mount the ClOB or C20B amplifier in a
standard 19" sound rack.
Before fitting the panel to the amplifier, remove the rubber
feet from the bottom of the amplifier. Slide the amplifier into
the rack panel from the rear. Using the screws from the feet of
the unit, secure upward through holes in the panel and the
bottom of the amplifier, where the feet had been mounted.
Overall dimensions of the RPK-35B are 3-1/2" H x 19" W
with side panels 6-13/32" D (8.9 x 48.3 x 16.3 cm). Cutout
dimensions are 2-5/8" x 11-7/16" (6.6 x 29 cm). The panel is
fabricated from cold-rolled steel and has a black finish.
О
MIC Z/AUX f—
MUTE p SWITCH /_
CUSTOMER T
SUPPLIED ^—
I UNLESS OTKERUdSE SPECIFIED ALL
RESISTORS ARE l/4WH0%
Z CAPACITORS >£RE m MFD
i VOLTAGES ARE +DC MEASURED TO GNO.
WITH A V.T.VM AND MAT VARV tZOfe
I i *0D£ l T Ю1
POWER
nlflRrNT
СЮВ &5-0WOOO
C209 ез-ofi-ooo _
Figure 3 — Schematic Diagram, Models ClOB & C20B