Operation, Page 12 – Bogen CAM8PRO User Manual

Page 12

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Operation

The primary goal when establishing the gain settings of the mixers is to have each channel
operating at the maximum gain without clipping, while leaving adequate headroom on the
volume control knob.

The channel Input Gain/Trim Control (1) on the rear panel of the mixers directly controls
the microphone pre-amplifier gain available at each channel.

The Volume Control (2) on the front panel controls how much of the gain is routed to the
main output stage. The front panel controls should optimally operate between the 9 and
2 oʼclock position when gain structure is correct (see example on page 13).

The Main Output Volume Control Knob (3) on the front panel controls the mixerʼs final
amplifier stage to the master output. This control should optimally operate between the
9 and 2 oʼclock positions when gain structure is correct.

With all channels operating, the main output meter should show a signal output range
between 0 and +6 VU. Adjust the main output control accordingly. If the output occasion-
ally peaks in the range of +6 and +12 VU, activate the Compressor/Limiter (see page 16).

The amplifier for the loudspeakers should be the final control for establishing volume levels.

Note: The channel Input Gain/Trim Controls are factory preset to produce a 0 dBμ
signal level at the master output when the front panel volume controls are set at the
2 oʼclock position. This setting is optimal with most input devices.

+

+

+

+

----

G

6

Mic

Line

Trim

1

-

+

-

+

Cut

Low

1

M.A

BUS

BUS

M.A

2

Page 12

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