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Teisco | SX-400

Description

The SX-400 is a solid 4-voice analog synth. It is most comparable to the Roland Juno 6, but has a better expression-section. The aftertouch and handwheel can trigger vibrato, cutoff and pitch at the same time, variable in speed and sensitivity. Available effects include an Ensemble (chorus) and a Portamento glide-effect. The sub & noise OSC and ensemble-switch are cool and make the SX-400 good for techno and acid too. Unfortunately there are no arpeggiators or sequencers.

It features stereo sound and 16 preset memories. 8 of which are user memories. It also features a Chorus Effect and offers CV gate control.

The unit can be played in one of 4 modes. Quad: one VCO can be assigned to one key at a time and played as in a chord. 
Dual: 2 VCO's are assigned to one key at a time and can be played as 4 notes for a thicker sound. Mono: 4 VCO's are assigned to one key at time. Therefore, four notes can be obtained by pressing one key. And last Solo: 1 VCO is assigned to one key but only one key is effective at a time.

BrandTeisco
ModelSX-400
DeviceSynth
TypeKeys
Engine TypeAnalog
EngineVCO
Voices (max)4
Oscillators1
Sub1
LFO1 with frequency, delay, saw, pulse, tri; 1 simple sine LFO
NoiseY
Engine Detailed1 VCO. Fine tuning and range for each OSC. Saw, pulse, tri, (16' 8' 4' 2') waveforms.
Filter (VCF)24 dB/oct resonant, self-oscillating, LFO-Mod, EGI-Mod with reverse mode.
Envelope (VCA)ADSR, LFO-Mod
Memory8 factory, 8 user
Keys49
Key typeKeys
VelocityNo
AftertouchChannel
CV-gateCV/GATE
Produced:1981 - 1982
Legend: Obvious Y: Yes, N: No, N/A: Not Applicable
VCO Voltage Controlled Oscillator DCO Digital Controlled Oscillator
LFO Low Frequency Oscillator Sub Sub Oscillator
VCF Voltage Controlled Filter VCA Voltage Controlled Amplifier
Velocity As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key. Aftertouch Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.
Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.

Manuals, patches etc.

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