20
31.5
50
100
200
2.5K
6.3K
12.5K
25
40
80
160
2K
5K
10K
63
125
315
250
1.6K
4K
3.15K
8K
16K
20K
INPUT
LEVEL
Channel One
Channel Two
20
31.5
50
100
200
500
1.25K
2.5K
6.3K
12.5K
25
40
80
160
400
1K
2K
5K
10K
63
125
315
800
250
630
1.6K
4K
3.15K
8K
16K
20K
INPUT
LEVEL
0
0dB
+12
-12
0
0dB
+12
-12
GRAPHIC STEREO
31 BAND EQUALIZER
/VU METER
EQU231VU
+12
-12
+12
-12
INPUT
OUTPUT
SIG CLIP SIG CLIP
RANGE
EQ
HI-PASS LOW-PASS
6
12
ON
16KHz
40Hz
RANGE
HI-PASS LOW-PASS
6
12
ON
16KHz
40Hz
SIG CLIP SIG CLIP
INPUT
OUTPUT
OUTPUT
OUTPUT
+6
+6
- 6
- 6
Dual 31 Band Graphic Equalizer
500
1.25K
400
1K
800
630
EQ
R
LTO
INPUT
LEVEL
0
+12
-12
0dB
+12
GRAPHIC MONO
31 BAND EQUALIZER
/VU METER
EQU131VU
31.5
50
100
200
500
1.25K
2.5K
6.3K
12.5K
25
40
80
160
400
1K
2K
5K
10K
63
125
315
800
250
630
1.6K
4K
3.15K
8K
16K
20K
20
-12
31 Band Graphic Equalizer
INPUT
OUTPUT
OUTPUT
SIG
CLIP
SIG
CLIP
RANGE
EQ
HI
PASS
6
12
ON
16KHz
40Hz
LOW
PASS
+6
- 6
R
LTO
GRAPHIC STEREO
31 BAND EQUALIZER
EQU231TWIN
MK
INPUT
OUTPUT
SIG
CLIP
RANGE
6
12
ON
16KHz
40Hz
LOW-PASS
0
+12
-12
0dB
+12
-12
+6
- 6
HI-PASS
20
31.5
50
100
200
500
1.25K
2.5K
6.3K
12.5K
25
40
80
160
400
1K
2K
5K
10K
63
125
315
800
250
630
1.6K
4K
3.15K
8K
16K
20K
INPUT
LEVEL
20
31.5
50
100
200
2.5K
6.3K
12.5K
25
40
80
160
2K
5K
10K
63
125
315
250
1.6K
4K
3.15K
8K
16K
20K
INPUT
LEVEL
500
1.25K
400
1K
800
630
Channel One
Channel Two
0
+12
-12
0dB
+12
-12
+6
- 6
SIG
CLIP
INPUT
OUTPUT
SIG
CLIP
6
12
ON
16KHz
40Hz
SIG
CLIP
RANGE
EQ
LOW-PASS
HI-PASS
R
LTO
Dual 31 Band Graphic Equalizer
EQ
INPUT
LEVEL
INPUT
LEVEL
Channel One
Channel Two
20
31.5
50
100
200
500
1.25K
2.5K
6.3K
12.5K
25
40
80
160
400
1K
2K
5K
10K
63
125
315
800
250
630
1.6K
4K
3.15K
8K
16K
20K
Dual 31 Band Graphic Equalizer
20
31.5
50
100
200
500
1.25K
2.5K
6.3K
12.5K
25
40
80
160
400
1K
2K
5K
10K
63
125
315
800
250
630
1.6K
4K
3.15K
8K
16K
20K
0
0dB
+12
-12
0
0dB
+12
-12
+12
-12
+12
-12
ON
40Hz
16KHz
12
6
EQ
RANGE
HI
PASS
LOW
PASS
INPUT
OUTPUT
SIG CLIP
SIG CLIP
INPUT
OUTPUT
ON
40Hz
16KHz
12
6
SIG CLIP
SIG CLIP
EQ
RANGE
HI
PASS
LOW
PASS
+6
- 6
- 6
+6
GRAPHIC STEREO
31 BAND EQUALIZER
EQU231
R
LTO
5
1. Filter level controls
EQU231TWIN
Front Panel
-
II
MK
1
1
2
11
13
12
4
3
6
8
5
7
10
VU-
II
EQU231
Front Panel
MK
1
2
3
12
13
5
4
9
8
EQU231-
Front Panel
II
MK
1
2
3
5
11
4 7
9
8
II
EQU131VU-
Front Panel
MK
Each one of these linear potentiometers will boost or attenuate (either 6dB or 12dB) the selected frequency
at a preset bandwidth.
When all the sliders are in the centre position, the output of the equalizer is flat response.
POWER OUTPUT
LTO
R
6
10
POWER OUTPUT
LTO
R
POWER OUTPUT
LTO
R
6
7
2
3
12 13
5
4
9
8
6
7
12
13
9
10
10
