17
By means of the precisely detentend 12-steps
“COARSE”-rotary switch on the front panel
gain is adjusted in steps of 6 dB from 0 … +66
dB.
The deviation from the indicated value is less
than +/- 0,3 dB.
FINE
The "FINE"-control is intended to precisely
adjust the gain between two coarse steps.
The setting range /-5 dB. The
imp/- 3 dB points are marked on the
scale.
Due to the center detent, the 'neutral' position
of this control is easy to reproduce.
DE/ACTIVATING GAIN FINE
The complete electronic circuitry of the fine
adjustement may be enabled/disabled by
means of the “FINE”-button.
The active state is displayed by the green
“ON”-LED over the “FINE”-button.
When disabled, the complete fine adjust cir-
cuitry is removed from the signal path.
THE LOW-CUT FILTER
In order to reduce undesired frequencies such
as wind or microphone handling noise, the
MIC-AMP F355 offers a variable Low-Cut
Filter.
The two-pole lowcut filter may be adjusted
from 10-250 Hz by the "LOW-CUT"-Control.
DE/ACTIVATING THE LOW-CUT
The complete electronic circuitry of the low-cut
filter may be enabled/disabled by means of the
“FILTER”-button.
The active state is displayed by the green
“ON”-LED over the “FILTER”-button.
When disabled, the complete filter-circuitry is
removed from the signal path.
MUTE
The “MUTE”-button serves to mute the outputs
of MIC-AMP F355. The enabled mute function
is displayed by the red “ON”-LED over the
“MUTE”-button.
NOTE:
An automatic mute is proceeded for 2
seconds during power-up and during
shut down of MIC-AMP F355.
Please refer also to “Auto-Mute” func-
tion whilst enable/disable phantom
powering decribed on page 16.
THE OPERATION
(1 of 2 Modules)
