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ELEX K2 (Hohner Stringvox) (r3) M175 Chorus 'Matrix' Board: Schematic
K2-6
shield
12
vol. pedal (grounding)
11
shield
10
strings audio (to gen. out)
9
GND
8
+27
7
NC
–13V
5
+13V
4
NC
GND/shields
2
strings audio
1
audio
audio
13
18
This board serves as a backpane routing power and signals to & from its
daughterboards. Terminal numbers and descriptions are added in the
absence of original documentation.
K2-20-2
audio
audio
audio
modulation
19
24 25
30
31
The board may be a redesign of an older board used in earlier K2
revisions, and perhaps in K4s. The new daughterboards are the K2-20-2s
and M174.
K2-20-2
K2-20-2
audio
audio
audio
modulation
36 37
42
43
48 49
n.b. while the 'strings' effect is usually described as an ensemble effect, in
the K2 ELEX chose to use 'Ensemble' for what might normally be called
Unison mode, so 'Chorus' is used here.
designed c.1979 ELEX S.p.A. (Excelsior)
M174
modulation
54
55
59 60
62 63
65
modulation out
drawn 2024 electropict
K2-7
audio
audio
66
71
+22V
to K2-6
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