Tom Oberheim has reissued the classic SEM monophonic analog synthesizer expander module, and it’s now available via AudioMIDI.
Description:
Originally released in 1974, the SEM is one of the classic discrete analog synths, with a huge, three-dimensional “fat” tone. Oberheim’s reissue cuts no corners – the circuitry is almost identical to original units. The only component changes were made due to unavailable parts, but the great tone has not been affected. No digital voice circuits, or thin-sounding analog “voice chips” here- only genuine hi-fi fat analog goodness.
This version includes a panel with 33 direct-access patch points on 1/8″ jacks, transforming the SEM into a powerful “mini-modular” synthesizer. Not only does this allow tremendous voicing flexibility when used standalone, it allows easy interfacing with modular synthesizers or additonal SEM modules for limitless potential.
Pricing:
- Tom Oberheim Synthesizer Expander Module with Patch Panel – $789.00
- Tom Oberheim Synthesizer Expander Module with MIDI to CV Panel – $899.00
- Tom Oberheim Synthesizer Expander Module (SEM) Panel Only Version – $599.00
Specifications:
Single-Voice Monophonic Analog Synthesizer
Patch Panel Connections
|
connection pin
|
function | direction |
|---|---|---|
|
A1
|
VCO 1 – External Modulation
|
input
|
|
A2
|
VCO 1 – Sawtooth Waveform
|
output
|
|
A3
|
VCO 1 – Sawtooth Waveform
|
output
|
|
B1
|
VCO 1 – Control Voltage #1
|
input
|
|
B2
|
Ground
|
–
|
|
B3
|
VCO 1 – Control Voltage #2
|
input
|
|
C1
|
VCO 1 – Sync Output
|
output
|
|
C2
|
Ground
|
–
|
|
C3
|
VCO 1 – Sync Input
|
input
|
|
D1
|
VCO 2 – Control Voltage #1
|
input
|
|
D2
|
Ground
|
–
|
|
D3
|
VCO 2 – Control Voltage #2
|
input
|
|
E1
|
VCO 2 – External Modulation
|
input
|
|
E2
|
VCO 2 – Sawtooth Waveform
|
output
|
|
E3
|
VCO 2 – Pulse Waveform
|
output
|
|
F1
|
VCO 2 – Sync Output
|
output
|
|
F2
|
VCA – Control Input
|
input
|
|
F3
|
VCO 2 – Sync Input
|
input
|
|
G1
|
LFO Trigger
|
input
|
|
G2
|
Ground
|
–
|
|
G3
|
LFO Waveform
|
output
|
|
H1
|
VCF – Control Voltage #1
|
input
|
|
H2
|
VCF – Control Voltage #2
|
input
|
|
H3
|
VCF – External Modulation
|
input
|
|
I1
|
VCA Output
|
output
|
|
I2
|
Ground
|
–
|
|
I3
|
Unused
|
–
|
|
J1
|
VCF – Highpass Signal
|
output
|
|
J2
|
Ground
|
–
|
|
J3
|
VCF – Bandpass Signal
|
output
|
|
K1
|
Selected VCF Response
|
output
|
|
K2
|
Ground
|
–
|
|
K3
|
Ground
|
–
|
|
L1
|
External Audio Input #1
|
input
|
|
L2
|
Ground
|
–
|
|
L3
|
(duplicate of L1 – not used)
|
–
|
|
M1
|
External Audio Input #2
|
input
|
|
M2
|
Ground
|
–
|
|
M3
|
(duplicate of M1 – not used)
|
–
|
|
X1
|
ENV 1 – Output
|
output
|
|
X2
|
ENV 1 – Gate
|
input
|
|
X3
|
ENV 1 – Trigger
|
input
|
|
Y1
|
ENV 2 – Output
|
output
|
|
Y2
|
ENV 2 – Gate
|
input
|
|
Y3
|
ENV 2 – Trigger
|
input
|
Complete electrical specs provided in the User’s Manual.
It needs to be available in Europe too…I was about to order one but i've changed my mind because i don't want to mess with the custom's office and pay half of the price for taxes…