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SSF POSITRONIC TRANSIENT GATE User Manual & Patch Book
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SSF POSITRONIC TRANSIENT GATE User Manual & Patch Book

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The patch examples contained in this collection were designed to showcase the versatility of the PTG while giving the user maximum freedom - patching
to external modules. Results may vary depending on your choice of modules and external settings. In some cases the controls may have to be tweaked a
bit to get the proper response. Just about every patch is a starting point for more complex patching - and combining the di erent techniques provided.
By trying every patch in this book, the user will fully survey and ultimatley master the nuances of the Positronic Transient Gate. The PTG can be a subtle
beast or a wild animal and can only be truely understood with patience and practice. However, the vactrol heart of this beast is a kind one - and rewards
those of all skill levels. Now go forth and learn what it truely means to be POSITRONIC!

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Summary of Contents for SSF POSITRONIC TRANSIENT GATE

  • Page 1 Just about every patch is a starting point for more complex patching - and combining the di erent techniques provided. By trying every patch in this book, the user will fully survey and ultimatley master the nuances of the Positronic Transient Gate. The PTG can be a subtle beast or a wild animal and can only be truely understood with patience and practice.
  • Page 2 CONTENTS PATCH LEGEND INTRO/BASICS- SIX PATCHES SIMPLE - FOUR PATCHES TRANSIENTS - FOUR PATCHES INTERNAL VCA - TWO PATCHES LPG - FOUR PATCHES 9-11 LFO - THREE PATCHES 12-14 INTERFACE - TWO PATCHES WAVE-SHAPING - THREE PATCHES 16-17 ENV FOLLOWER - THREE PATCHES 18-19 COMPRESSION -THREE PATCHES 20-21 USER SUB - SIX PATCHES...
  • Page 3 LEGEND LARGE PATCH CABLE This icon represents the start of Square boxes with text denote I <3 SSF a patch - when some external external signals or modules and source is plugged into the PTG’s key information speci c to each inputs.
  • Page 4 DIODE SLEW NORMAL CLOCK or SQR STEP VACTROL RESPONSE DRIVE User’s Choice +/- OUT CLOCK or SQR DAMP REVERSE CONTROL DETAILS: This patch is a basic building block for larger patches and to familiarize the user with the e ect. The DIODE SLEW works like a traditional resistor capacitor (RC) passive slew - with the exception that the slewing e ect is strictly due to the charge injection/recombination rate of the vactrol’s LED.

  • Page 5: Remote Control

    Patch Pals DETAILS: This may seem obvious but remember that any of PTG A’s outputs can be used to modulate PTG B’s parameters or the other way around for some vactrol-modulated vactrol e ects. Vactrol on vactrol action anyone? While PTG IN A is normalized to IN B, keep in mind that they are completely separate circuits. Combinations DETAILS: Using an external DC mixer, try mixing PTG A and B’s transient outputs for even more interesting combined shapes.
  • Page 6 Overdrive/Distortion - External Signal Ampli er Audio Mixer, VCA, VCF Etc. IN A POST GAIN VACTROL GAIN A DRIVE CONTROLS: GAIN Adjusts the GAIN for all input levels and the Overdrive/Distortion for modular level signals Notes: To bring really low signals into overdrive/distortion or just make them louder - try multiple stages of this patch by patching POST GAIN A into IN B and applying further gain with GAIN B - and taking the output from POST GAIN B.
  • Page 7 VC Emphasis-Attenuator Audio User’s Choice VCA IN +/- OUT VACTROL DRIVE Emph-Atten STEP RESPONSE CONTROLS: STEP RESPONSE Adjust the amplitude of the control source voltage DAMP CONTROL Adjust the overall amplitude level of the signal source - gain is possible with settings above NATURAL DC Bias Source &...
  • Page 8 Positronic Transient(s) Gate/Trigger Modulation >2V Destination IN A +/- OUT VACTROL DRIVE Modulation Destination +/- OUT IN B CONTROLS: STEP RESPONSE Transient dynamic attack/amplitude. Max CW setting for fast attack and strongest amplitude DAMP CONTROL Transient dynamic release(ringing)/amplitude. Ringing increases while turning CW. Take note of the OPEN marking on this control.
  • Page 9 Amped Positronic Transient #1 (ultra non-linear attack) Gate/Trigger >2V IN B IN A +/- OUT POST GAIN GAIN B VACTROL DRIVE Modulation Destination CONTROLS: STEP RESPONSE See the Positronic Transient Patch - but use speci cally from fully CCW to ~8-11 o’clock for best results DAMP CONTROL See the Positronic Transient Patch - but use speci cally from fully CCW to about 12 o’clock for best results.
  • Page 10 Transient VCA VACTROL Gate/Trigger DRIVE >2V IN A Audio Signal User’s Or CV Choice VCA IN +/- OUT CONTROLS: STEP RESPONSE VCA transient dynamic attack/amplitude. Max CW setting for fast attack and strongest amplitude DAMP CONTROL VCA transient dynamic release(ringing)/amplitude. Ringing increases while turning CW. Take note of the OPEN marking on this control.
  • Page 11 Universal “PLUCK” EXTERNAL Use the resultant envelope to FAST pluck the FM input of your favorite ENVELOPE or VCF without the need TRIGGER POST GAIN IN A or IN B for a VCA. This works because the output is su ciently biased low enough for VACTROL a VCF to lter a wide range of GAIN...
  • Page 12 Universal LPG #2 - external VCA Gate/Trigger >2V Input IN A +/- OUT VACTROL VCA OUT DRIVE Audio Audio Audio Signal Input Input Input +/- OUT CONTROLS: STEP RESPONSE VCA transient dynamic attack/amplitude. Max CW setting for fast attack and strongest amplitude DAMP CONTROL VCA transient dynamic release(ringing)/amplitude.
  • Page 13 Universal LPG #3 - internal VCA Gate/Trigger >2V IN A Audio Signal Audio Input VCA IN +/- OUT VACTROL DRIVE Input +/- OUT CONTROLS: STEP RESPONSE VCA transient dynamic attack/amplitude. Max CW setting for fast attack and strongest amplitude DAMP CONTROL VCA transient dynamic release(ringing)/amplitude.
  • Page 14 Gated Transient LFO Clock VACTROL DRIVE IN A OPTIONAL Clock STEP RESPONSE Modulation Destination +/- OUT OPTIONAL Clock DAMP CONTROL CONTROLS: GAIN GAIN should be set at 1.0 but can be higher if amplifying the CV is desired STEP RESPONSE Adjust the attack of the repeating transient DAMP CONTROL Adjust the decay of the repeating transient...
  • Page 15 Bipolar CV - Phase Delayed Dual Transient LFO Bipolar Control Voltage STEP IN A POST GAIN RESPONSE VACTROL DRIVE GAIN A STEP IN B POST GAIN RESPONSE GAIN B Modulation Modulation Destination Destination +/- OUT +/- OUT CONTROLS: GAIN GAIN should be set at 1.0 but can be higher if amplifying the CV is desired STEP RESPONSE Adjust the attack response of the envelope to taste - will also a ect the timing of the delay to a degree DAMP CONTROL...
  • Page 16 Envelope Chaser LFO Unipolar Envelope DAMP IN A POST GAIN CONTROL GAIN A VACTROL DRIVE Modulation DC Mixer Destination - OUT GAIN B IN B POST GAIN CONTROLS: GAIN GAIN A set at 1.0 or less and adjusts the input level of the external envelope*. GAIN B set at 1.0 or less and adjusts the output level of the external envelope, set higher to overdrive it.
  • Page 17 Stomp Box Adapter Modular Stomp Box Level Audio Audio Input VCA IN +/- OUT VACTROL DRIVE Stomp Box VCA, Mixer Audio Etc. Output IN A POST GAIN GAIN A CONTROLS: STEP RESPONSE Stomp Box input amplitude - leave this at about 1 o’clock for best DAMP range. DAMP CONTROL Stomp Box input amplitude - adjust from fully CCW to about 12 0’clock for +/-5V signals before clipping GAIN...
  • Page 18 CV Wave-shaper Control User’s Voltage Choice to be VCA IN +/- OUT wave shaped VACTROL DRIVE Modulation STEP RESPONSE Modulation DAMP CONTROL CONTROLS: STEP RESPONSE Adjust the amplitude of the control source voltage DAMP CONTROL Adjust the amplitude of the control source voltage (Remember this is a reverse attenuator) Notes: This is a really great patch that you can run all of your modulation through.
  • Page 19 Dynamic Self-Wave shaping VCA (requires one stackable, passive multiple or mixer) VACTROL Gate/Trigger DRIVE >2V IN A Audio Passive mult Signal Or CV Mixer VCA IN +OUT -OUT IN B +OUT VCA IN POST GAIN GAIN B CONTROLS: Follow Instructions for the Transient VCA Patch. GAIN Adjust for overall level and shape depth STEP RESPONSE...
  • Page 20 New Classic Envelope Follower Audio ( Line or Modular ) STEP IN A POST GAIN RESPONSE GAIN A VACTROL VCF FM DRIVE Input Or other + OUT Audio Input IN B POST GAIN CONTROLS: GAIN B GAIN START with the GAIN set at 1.0 or less for modular levels - use higher gain settings for line level and to Adjust the threshold/emphasis for a variety of e ects STEP RESPONSE Interactive with DAMP - Adjust the attack response of the envelope to taste...
  • Page 21 Threshold based Envelope Follower Audio VCF FM ( line or Input modular ) or other IN A + OUT VACTROL DRIVE TRY BOTH Audio Input IN B POST GAIN CONTROLS: GAIN B GAIN START with the GAIN set at 1.0 or less for modular levels - use higher gain settings for line level and to adjust the transient gate threshold level for a variety of e ects STEP RESPONSE Interactive with DAMP - Adjust the attack response of the envelope to taste...
  • Page 22 PTG Compressor Audio ( Line or Modular ) DAMP IN A POST GAIN CONTROL GAIN A VACTROL DRIVE VCA CV Input + OUT Audio Input IN B POST GAIN CONTROLS: GAIN B GAIN START with the GAIN set at 1.0 or less for modular levels - use higher gain settings for line level and to Adjust the threshold/emphasis for a variety of e ects STEP RESPONSE Interactive with DAMP - Adjust the attack response of the envelope to taste...
  • Page 23 Side-chain Compression - Duck-a-Bass Kick -submitted by Radiokoala EXTERNAL AUDIO MIXER BASS KICK Or similar INTERFACE IN A POST GAIN GAIN A VACTROL DRIVE STEP - OUT RESPONSE EXTERNAL Bass AUDIO MIXER Or Lead Voice INTERFACE VCA IN +/- OUT CONTROLS: GAIN START with the GAIN set at 1.0 - higher settings will compress the voice on channel B...
  • Page 24 PUMPER- Submitted by qu.one CLOCK Signal (8ths on CLOQ) IN A Audio Mixer Signal other VCA IN +OUT Half Speed CLOCK VACTROL DRIVE (4ths on CLOQ) DAMP CONTROL PUMPER PATCH DETAILS Audio signal to VCA A input (or external VCA input) Clock signal to PTG IN A (8ths on CLOQ) 1/2 Clock signal into DAMP CV IN and vary DAMP CONTROL to taste for various pumping e ects STEP RESPONSE set in the EXPONENTIAL range...
  • Page 25 Drum Trigger SHUFFLER- Submitted by qu.one Drum CLOCK Module SIGNAL Trigger in IN A + OUT VACTROL /2 (or less) CLK Speed DRIVE Synced STEP RESPONSE SHUFFLER PATCH DETAILS Clock signal to PTG IN A Temp/Clock synced LFO STEP RESPONSE CV A +OUT to drum trigger input Set STEP RESPONSE attenuator to max - playing with DAMP CONTROL pot creates trills and o beats Using a CLOQ and adjusting SPACE will yield even more "swing"...