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ELEX K2 (Hohner Stringvox) (r3) K2-14 Controls 'Matrix' Board: Schematic
Strings (bass) decay
13
Cello (bass) decay
12
Bass audio normal return
11
1
shields
1
PH(B) audio (to PH output)
10
+20
9
1
shields
1
Strings (bass) audio
8
Cello (bass) audio
7
shields
1
PHB (bass) audio
6
1
3
4
5
6
7
8
PHB (bass) audio (to K2-9)
5
+20 to strings right busbar
4
2
+20 to ensemble busbar
3
Bass audio (to Bass output)
2
shield
1
Terminal numbers are as on the board except for
(An earlier revision may have had a different board,
the K2-110 connectors, where the numbers are
K2-11, in place of the K2-110; its terminal numbering is unknown.)
from the K2-110.
Descriptions are my interpretation.
9
10
11
12
13
14
15 16
17 18
19
20
21
22
23
24 25
K2-110
1
2
3
2
2
4
5
2 2
6
7
8
2
2 2
9
26
27
28
10 11 2 12 13
14 15 16 2 17 18
19 20 2 2 21 22
23 2 24 2
2 25
K2-13
designed c.1975–79 ELEX S.p.A. (Excelsior)
drawn 2024 electropict
14
Strings (treble) decay
15
Cello (treble) decay
16
shield
8
17
strings audio (to K2-6)
6
18
+27
10
7
16
8
7
16
9
5
16
8
7
19
7
19
Bass Pedal audio
6
[1]
16
16
16
shield
4
20
Cello audio (treble)
2
5
16
shield
2
4
21
Strings audio (treble)
2
2
16
shield
2
3
22
PHB audio (treble or all)
1
2
1
K2-10
K2-9
[1] K2-9 produces a +13V supply at
terminal 6 which powers the PHB
amplifier on K2-110.
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