
EQU215TWIN
INPUT
OUTPUT
SIG
CLIP
SIG
CLIP
RANGE
6
12
EQ
ON
16KHz
LOW-PASS
GRAPHIC STEREO
15 BAND EQUALIZER
INPUT
LEVEL
0
+12
-12
0dB
+12
-12
+6
-6
Dual 15 Band Graphic Equalizer
63 250 1.6K 6.3K40 160 1K 4K25 100 630400 2.5K 10K 16K 63 250 1.6K 6.3K40 160 1K 4K25 100 630400 2.5K 10K 16K
INPUT
LEVEL
0
+12
-12
0dB
+12
-12
+6
-6
Channel One Channel Two
40Hz
HI-PASS
R
LTO
INPUT
OUTPUT
SIG
CLIP
SIG
CLIP
RANGE
6
12
EQ
ON
16KHz
LOW-PASS
40Hz
HI-PASS
4
IIEQU131- Front PanelMK
-IIEQU215 Front PanelMK
EQU215TWIN Front Panel-IIMK
1
1
2
2
6
13
12
1. INTRODUCTION
EQU Series Graphic Equalizers include the following seven models:
EQU131- -
EQU215- -
EQU215TWIN- -
EQU131VU- -
EQU231VU- -
EQU231- -
EQU231TWIN- -
MK Graphic Mono 31 Band Equalizer
MK Graphic Stereo 15 Band Equalizer
MK Graphic Stereo 15 Band Equalizer
MK Graphic Mono 31 Band Equalizer / VU Meter*1
MK Graphic Stereo 31 Band Equalizer / VU Meter*2
MK Graphic Stereo 31 Band Equalizer
MK Graphic Stereo 31 Band Equalizer
II
II
II
II
II
II
II
2. FEATURE LIST
Easy to operate front panel controls
Constant Q circuitry with a 3% center frequency accuracy
Control range 6dB / 12dB selectable
Active balanced and unbalanced input and output connectors
Variable input level control
Signal clip pilot
Ground "LIFT" switch to disconnect signal ground from chassis ground
Power off automatic bypass function
Line voltage selectable
Robust and compact design
Intended for installation in standard 19" rack space
Manufactured Under QS9000, VDA6.1 certified management system
3. CONTROL ELEMENTS
3.1 The Front Panel
1
2
3
4
56
9
13
1 1
Thank you very much for expressing your confidence in LTO products by purchasing our EQU MKII Series Graphic
Equalizers. With the EQU you have acquired an extremely musical and flexible Graphic Equalizer.
The high-end EQU MKII Series Graphic Equalizers are based on many years of experience and are designed to pro-
vide a permanent precise equalization to the musician, performer, studio engineer and sound contractor. The EQU can
be used wherever is requested to modify the frequency "contour" of a sound and can offer a solution to many common
sound problems and allows the user to use the creativity to obtain nice results in terms of sound characterization.
LEVEL
0
+12
-12
GRAPHIC STEREO
15 BAND EQUALIZER
EQU215
INPUT
OUTPUT
126
ON
EQ
RANGE
63 250 1.6K 6.3K
40 160
1K
4K
25
100
630
400
2.5K
10K 16K
Dual 15 Band Graphic Equalizer
+6
-6
R
LTO
Channel One
0
+12
-12
+6
-6
LEVEL
-6
Channel Two
63 250 1.6K 6.3K
40 160
1K
4K
25
100
630
400
2.5K
10K 16K
0dB
+12
-12
0dB
+12
-12
40Hz
HI-PASS
16KHz
LOW-PASS
SIG CLIP SIGCLIP
INPUT
OUTPUT
126
ON
EQ
RANGE
40Hz
HI-PASS
16KHz
LOW-PASS
SIG CLIP SIGCLIP
INPUT
LEVEL
0
0dB
+12
-12
GRAPHIC MONO
31 BAND EQUALIZER
EQU131
+12
-12
20 31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K25 40
80
160 400
1K 2K
5K
10K63 125 315
800
250 630 1.6K
4K
3.15K
8K
16K 20K
31 Band Graphic Equalizer
+6
-6
R
LTO
INPUT
OUTPUT
ON
40Hz 16KHz
126
SIG
CLIP
SIG
CLIP
EQRANGE
HI
PASS
LOW
PASS
2
9
56
3
4
9
10
4
3
5
10
12
13
1210
7
78
78
8
7
8
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