4.
Selector Switch MIC / LINE
If this knob is depressed, the LINE-input is operating.
Otherwise the MIC-preamp is selected.
5.
Gain Control
The input sensitivity of the microphone- and line-preamplifier of each channel
can be adjusted with this control.
Gain has to be reduced, if the PEAK LED (13) constantly lights up.
6.
Hi-Pass Filter
Subsonic signal components like environmental rumble can be rather disturbing.
So this filter circuit is provided to suppress undesired signals below 100 Hz with
a slope of 12 dB / oct. It can also be used to reject hum interferences.
7.
High Frequency Equalization
This equalizer circuit allows 15 dB of boost or cut in the high frequency range
with a shelving characteristic.
8.
Midrange Equalization
This semiparametric filter circuit allows 15 dB of boost or attenuation in the
midrange. The center frequency of the EQ can be shifted continuously between
250 Hz and 8 kHz.
9.
Low Frequency Equalizer
The center frequency of the semiparametric bass-equalizer circuit is sweepable
between 40 Hz and 400 Hz. It provides 15 dB of boost or cut.
Stage Line
R
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
HF EQ (MMX- . . . .)
MID EQ (MMX- . . . .)
LF EQ (MMX- . . . .)
Summary of Contents for MMX-1221
Page 7: ...7 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 D ...
Page 9: ...9 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 D ...
Page 17: ...17 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 GB ...
Page 19: ...19 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 GB ...
Page 27: ...27 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 F ...
Page 29: ...29 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 F ...
Page 37: ...37 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 I ...
Page 39: ...39 MMX 1221 1621 2021 MASTER MASTER 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 10 I ...