f u n c t i o n s
13
How filters fit into the circuit
Controls
• The Low and High rotary controls
set the frequencies affected by the
filter. For the Low filter, all frequencies
below the specified frequency are
attenuated. For the High filter, all
frequencies above the specified
frequency are attenuated.
• The Filters button switches the
filters in and out of the audio signal.
• The To S/C button switches the
filters in and out of the compressor. For more details, see the Compressor section.
• The Key button (located with the gate/expander controls) can assign the filters to
the gate or expander. For more details, see the Gate/Expander section.
Off position: For practical purposes, the off position for the Low filter is 15Hz, and for the
High filter is 25kHz. To switch both filters out of the audio signal, use the Filters button.
To S/C
Low
Hz 25k
65
110
350
1k5
4k6
Hz 10k
15
28
70
260
1k5
Filters
Freq
High
Mic
dB
60
LNE
10
20
30
40
Input Trim
dB
12
12
7
2.5
2.5
7
+
–
Low
Hz 25k
65
110
350
1k5
4k6
Hz 10k
15
28
70
260
1k5
Freq
To S/C
Key
Filters
Instrument
Input
Inst
Mic Input
Line Input
Hi–Z
+18dB
Line
Key
Ext Key
Ext
Ext
In
Out
INPUT STAGE
INPUT TRIM
EXT. KEY SWITCH
KEY INPUT
FILTER STAGE
Audio
Path
LED Lit (switch in)
LED Unlit (switch out)
To Compressor
Side Chain
To Gate/Exp
Side Chain
