Frac rack: Difference between revisions
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== Power == |
== Power == |
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Power requirements for Frac modules are typically ±15VDC. Current draw depends on the module. The power connectors are 4 way [[MTA|AMP MTA-156]] headers. The [[CV/gate|control voltage]] is 1V/octave.<ref name="measures" /><ref name="an" /><ref name="faq" /> |
Power requirements for Frac modules are typically ±15VDC. Current draw depends on the module. The power connectors are 4 way [[MTA|AMP MTA-156]] headers. The [[CV/gate|control voltage]] is 1V/octave.<ref name="measures" /><ref name="an" /><ref name="faq" /> [[PAiA P9700S]] modules are designed for an ±18V unregulated power with on module regulation where necessary, although ±15V regulated supplies can be used.<ref>[http://www.paia.com/p9700s.asp P9700S Series Analog Synthesizer Modules]</ref> |
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== Banana Frac == |
== Banana Frac == |
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Revision as of 19:21, 11 August 2017
Frac Rack 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 1¾", so a 3U module is 5¼" (133.35 mm) tall. The Frac format has a standard width unit of 1½". So 3" (76.2 mm) and 4½" (114.3) wide modules are common in this format.[1]
Note that even though the height of both Frac and Euro modules are 3U, differences exist in the mounting system.[2][4][5]
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.[6][7]
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.[8]
Banana Frac
Although Frac format modules typically use 3.5 mm connectors and plugs for patching, there are companies that offer modules with banana jacks e.g. BugBrand and Metalbox.[9][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
Template:From Muff Wiggler wiki
See also
References
- ^ 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
- ^ Tech Notes, Blacet Research
- ^ Banana Frac: The Definitive Guide, Muff Wiggler forum, August 2009
- ^ Metalbox Info
- ^ P9700S Series Analog Synthesizer Modules
- ^ Banana Frac: The Definitive Guide, Muff Wiggler forum, August 2009
- ^ Metalbox Info
- ^ which frac filter?, Muff Wiggler forum, Dec 2008
- ^ Modular Addict has MFOS PCB's!, Muff Wiggler forum, Sep 2016
- ^ a b Source for MOTM Frac DIY, Muff 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