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UniSyn

 Universal Audio to Synth Interface User’s Manual

Rear Panel of UniSyn

E

D

C

9V DC

INPUT

PRE OUT

B

SUSTAIN

UniSyn

A

SYNTH OUT

MADE

IN USA

+

A.  ¼” SYNTH OUT:  Outputs mix of preamp output and internal 

synth voices as set by the OUT MIX knob.

B.  ¼” SUSTAIN input:  Connect normally-open sustain pedal here 

(not included) to “hold” the synth voice as well as CV and MIDI 

outputs.

C.  9v DC input:  Use included 2mm diameter center-negative PSU 

or equivalent.  PSU must be able to provide minimum 100mA.

D.  ¼” PRE OUT:  +4dBu or -20dBu preamp output after automatic 

gain control (AGC).

E.  Combo XLR or balanced/unbalanced ¼” INPUT:  Monophonic* 

audio input, level can range from mic to line level.

*Note:  The UniSyn is designed for monophonic audio inputs, 

meaning it is best suited for handling musical input played one 

note at a time.  It is possible to achieve pleasing effects with some 

polyphonic inputs but the UniSyn will always try to interpret the 

input as a single note.

On a related note, the UniSyn can only produce a single pitch CV 

and a single envelope CV at a time and can only produce one MIDI 

note at a time, whose pitch may be modulated due to pitch bends.

Summary of Contents for UniSyn

Page 1: ...UniSyn Universal Audio to Synth Interface User s Manual www secondsound com...

Page 2: ...internal synth voices CV and MIDI using an optional sustain pedal not included Provide a 1v oct FM CV input for modulating the pitch of the internal synth voices as well as the CV and MIDI outs Provid...

Page 3: ...vide minimum 100mA D PRE OUT 4dBu or 20dBu preamp output after automatic gain control AGC E Combo XLR or balanced unbalanced INPUT Monophonic audio input level can range from mic to line level Note Th...

Page 4: ...3 1 OFF WAVE MIX INF 0 LEVEL 20 6 PHANTOM POWER SOURCE OUT MIX SYNTH 1 1 UniSyn 13 MIDI OUT SD CARD 4dBu 20dBu OFF ON OFF 75 10dBu 8dBu 4 7 14 15 17 18 19 Input Conditioning Section 1 24v Phantom Pow...

Page 5: ...8v 9 Envelope CV Envelope CV output Output range 0 6v 10 Gate CV Outputs 5v when note played 0v otherwise Adjacent Red LED is illuminated when gate is OFF 11 FM CV input CV input for modulating pitch...

Page 6: ...Clock Envelope controls Aftertouch Channel Pressure 12 O Clock Envelope controls Mod Wheel CC 2 O Clock Envelope controls Breath Controller CC Fully CW Envelope controls Expression CC 18 Source Synth...

Page 7: ...stand the signal flow inside the UniSyn First the AGC is applied to the input signal boosting it by a gain from 0 50dB to achieve the optimum preamp output level The AGC preamp is followed by a switch...

Page 8: ...s on when no audio is being played With plucked string instruments like guitar it may take some tuning to get the gate to differentiate exactly when a note is being played from the low level transient...

Page 9: ...e it is especially useful to mix the dry and wet signals together so it s easier to hear what harmony interval is tuned Note that the harmony knob is continuous it does not give you clicks when moving...

Page 10: ...by a maximum of 8dB before it stops increasing The gain reaches this maximum increase of 8dB when the input level reaches 12dBFS after which the output level will fall linearly as the input level kee...

Page 11: ...st be increased Problem High guitar notes on the high E string sound too weak Solution Try enabling 3 1 compression it is especially helpful for audio inputs with wide dynamic range like guitar whose...

Page 12: ...UniSyn Second Sound LLC 3570 Hibiscus St Miami FL 33133 tel 305 498 5918 www secondsound com www facebook com secondsoundaudio www instagram com secondsoundaudio www youtube com secondsoundvideos...

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