Control Elements; Block Diagram - Alto PA MONITOR PROCESSOR User Manual

3. CONTROL ELEMENTS

3. CONTROL ELEMENTS
Front Panel
5 6
12 6 6 12 6 40Hz
R HI-PASS LOW-PASS
0 0
LTO
MODE RANGE
12 6 6 12 6
Bypass
25 40 63 100 160 250 400 630 1K 1.6K 2.5K 4K 6.3K 10K 16K LEVEL ON
15 BAND GRAPHIC EQUALIZER
2 3 4
1 POWER Switch
When you set this switch to "ON" position, the unit will be turned on; when
you set it to "OFF" position, the unit will be turned off.
2 Graphic Equalizer
These controls will boost or attenuate (either 6 dB or 12 dB) the selected
frequencies. When all slider potentiometers are set in center position, the
frequency response is flat (no boost and attenuate).
3 LEVEL Fader
This fader is used to adjust the input level, which can be varied from -6 dB to
+6 dB.
4 MODE Switch
Engage this switch, it will insert the 15 band graphic equalizer and HI/LOW
Pass filter into signal path, and the next LED (green) will illuminate. When this
switch is in bypass mode, the 15 band graphic equalizer and HI/LOW Pass will
be bypassed.
5 HI-PASS Switch
Engage this switch, it will cut the low frequencies at 40 Hz (12 dB per octave),
and the next LED (green) will illuminate.
6 LOW-PASS Switch
Engage this switch, it will cut the high frequencies at 16k Hz (12 dB per
octave), and the next LED (green) will illuminate.
7 RANGE Switch
This switch is used to choose the gain range of the filter potentiometer either
+6 dB or +12 dB. Up for +6 dB, down for +12 dB.
2
8 9 12 14 16
OUTPUT LEVEL(dB)
24 18 12 6 0 6 12 18
16KHz
90 0
INVERTER
25 270 3 1
MODE MODE MODE
15 360 0 20 2K 20K 0 20 6
400 4K
40 400 dB 200 2K dB dB
6 FREQUENCY (Hz) Bypass 10 DEPTH Bypass FREQUENCY (Hz) 10 DEPTH Bypass
FREQUENCY (Hz)
12 ON 1 ON 1 ON
LOW CUT FILTER NOTCH1 NOTCH2 MASTER VOL.
7 10 13 11 15

6. BLOCK DIAGRAM

LTO MONITOR
PA/MONITOR
PROCESSOR
ON
OFF
POWER
1
7