Frac rack: Difference between revisions
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== Patching == |
== Patching == |
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Frac format modules typically use 3.5 mm connectors and plugs for patching, although there are companies that offer modules with banana jacks e.g. [[BugBrand]], [[Metalbox]].<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=7514&sid=6d5c4caf944e77c085f0437cf90ce3be Banana Frac: The Definitive Guide], |
Frac format modules typically use 3.5 mm connectors and plugs for patching, although there are companies that offer modules with banana jacks e.g. [[BugBrand]], [[Metalbox]].<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=7514&sid=6d5c4caf944e77c085f0437cf90ce3be Banana Frac: The Definitive Guide], Mod Wiggler forum, August 2009</ref><ref>[http://www.metalbox.com/ Metalbox Info]</ref> |
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== Power == |
== Power == |
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* [[Bridechamber]] |
* [[Bridechamber]] |
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* [[BugBrand]] |
* [[BugBrand]] |
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* [[CGS]]<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=2462 which frac filter?], |
* [[CGS]]<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=2462 which frac filter?], Mod Wiggler forum, Dec 2008</ref> |
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* [[Cyndustries]] |
* [[Cyndustries]] |
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* [[Encore Electronics]] |
* [[Encore Electronics]] |
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* [[Magic Smoke Electronics]] |
* [[Magic Smoke Electronics]] |
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* [[Metalbox]] |
* [[Metalbox]] |
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* [[Music From Outer Space|MFOS]] – not format specific and can be powered by +/-15V<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=167974 Modular Addict has MFOS PCB's!], |
* [[Music From Outer Space|MFOS]] – not format specific and can be powered by +/-15V<ref>[https://www.modwiggler.com/forum/viewtopic.php?t=167974 Modular Addict has MFOS PCB's!], Mod Wiggler forum, Sep 2016</ref> |
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* [[Oakley Sound Systems]] – some support for Frac and some [[5U]] PCBs can fit behind a Frac panel.<ref name="src">[https://www.modwiggler.com/forum/viewtopic.php?t=42303 Source for MOTM Frac DIY], |
* [[Oakley Sound Systems]] – some support for Frac and some [[5U]] PCBs can fit behind a Frac panel.<ref name="src">[https://www.modwiggler.com/forum/viewtopic.php?t=42303 Source for MOTM Frac DIY], Mod Wiggler forum, Sep 2011</ref> |
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* [[PAIA]] – pioneers of the Frac format |
* [[PAIA]] – pioneers of the Frac format |
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* [[STG Soundlabs]] |
* [[STG Soundlabs]] |
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== References == |
== References == |
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{{From |
{{From Mod Wiggler wiki|Frac}} |
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{{reflist}} |
{{reflist}} |
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Revision as of 17:26, 24 April 2021
Frac rack, FracRak or Frac, from Fractional Rack, is the modular synthesizer format designed by John Simonton of PAiA. It has a mainly USA following largely through the popularity of Blacet modules.[1][2][3]
Panel format
Like the Eurorack format, Frac is considered a 3U format. The height of most modern modular synthesizer modules is measured by the number of vertical units it consumes in a standard 19" equipment rack. Modules conforming to the 3U format will take up three vertical units in a 19" equipment rack. Each vertical rack unit is 1+3/4", so a 3U module is 5+3/4" (133.35 mm) tall. The Frac format has a standard width unit of 1+1/2". So 3" (76.2 mm) and 4+1/2" (114.3) wide modules are common in this format.[1]
Difference between Frac rack and Eurorack
Although both Frac and Euro modules are 3U, use V/octave and have similar signal levels the modules aren't interchangeable. Frac modules are deeper and have a different mounting system. The module power connectors are different and so are the voltages; Frac modules are powered with ±15V and Eurorack with ±12V. Check the specs of individual modules for CV compatibility. To patch between a banana Frac system and a Euro system a common ground connection will need to be made.[2][4][5][6][7]
Patching
Frac format modules typically use 3.5 mm connectors and plugs for patching, although there are companies that offer modules with banana jacks e.g. BugBrand, Metalbox.[8][9]
Power
Power requirements for Frac modules are typically ±15VDC. Current draw depends on the module. The power connectors are 4 way AMP MTA-156 headers. The control voltage is 1V/octave.[1][2][4] PAiA P9700S modules are designed for an ±18V unregulated power with on module regulation where necessary, although ±15V regulated supplies can be used.[10]
Frac brands
- Ad Infinitum
- Analog Metropolis
- Bananalogue – Frac with banana jacks
- Barton
- Blacet Research
- Bridechamber
- BugBrand
- CGS[11]
- Cyndustries
- Encore Electronics
- Flight of Harmony
- j3rk
- KissBox
- Livewire Electronics
- Magic Smoke Electronics
- Metalbox
- MFOS – not format specific and can be powered by +/-15V[12]
- Oakley Sound Systems – some support for Frac and some 5U PCBs can fit behind a Frac panel.[13]
- PAIA – pioneers of the Frac format
- STG Soundlabs
- Stroh Modular
- Synthasonic
- Synthesis Technology MOTM – never supported Frac but some 5U PCBs will fit behind a Frac panel.[13]
- Wiard
- YUSynth
See also
References
Template:From Mod Wiggler wiki
- ^ a b c Standard measurements in front panels, Electro-music.com forum, April 2006
- ^ a b c Analog Notes
- ^ List of Frac module manufacturers, Muff's Modules & More forum, August 2008
- ^ a b "Blacet FAQ". Archived from the original on 2015-02-12. Retrieved 2015-06-11.
{{cite web}}
: Unknown parameter|dead-url=
ignored (|url-status=
suggested) (help) - ^ Tech Notes, Blacet Research
- ^ Difference between Frac rack and Euro, Vintage Synth Explorer forum, May 2013
- ^ EuroSynth – FracRak Comparisons by Laurie Biddulph, 2015
- ^ Banana Frac: The Definitive Guide, Mod Wiggler forum, August 2009
- ^ Metalbox Info
- ^ P9700S Series Analog Synthesizer Modules
- ^ which frac filter?, Mod Wiggler forum, Dec 2008
- ^ Modular Addict has MFOS PCB's!, Mod Wiggler forum, Sep 2016
- ^ a b Source for MOTM Frac DIY, Mod Wiggler forum, Sep 2011
External links
- Fractional Rack Modules, Muff's Modules & More forum,
- Standard measurements in front panels, electro-music.com, DIY Hardware and Software forum, May 2007
- About Blacet Research
- Frac on ModularGrid
- EuroSynth – FracRak Comparisons by Laurie Biddulph, 2015
- 1978 PAIA catalog
- PAiA at Marvin Jones' website, also has some issues of Polyphony
- PAiA documents, Synth & Studio Docs Archive