Frac rack: Difference between revisions

'''Frac Rack''', '''FracRak''' or '''Frac''', from ''Fractional Rack'', is the modular synthesizer format designed by [[John Simonton]] of [[PAiA Electronics Inc|PAiA]]. It has a mainly USA following largely through the popularity of [[Blacet Research|Blacet]] modules.<ref name="measures">[http://www.electro-music.com/forum/viewtopic.php?t=18281&postorder=asc Standard measurements in front panels], Electro-music.com forum, April 2006</ref><ref name="an">[http://www.analognotes.com/ Analog Notes]</ref><ref name="list">[http://www.muffwiggler.com/forum/viewtopic.php?t=1461 List of Frac module manufacturers], Muff's Modules & More forum, August 2008</ref>

Although both Frac and Euro modules are 3U, use V/octave (CVs are compatible) and have basically the samesimilar signal levels the modules aren't interchangeable. DifferencesFrac existmodules inare thedeeper and has a different mounting system. The power connectors are different and so are the voltages. Frac modules are powered with ±15V and Eurorack with ±12V.<ref name="an" /><ref name="faq">[http://www.blacet.com/FAQ.html Blacet FAQ]</ref><ref>[http://www.blacet.com/tech.html Tech Notes], Blacet Research</ref><ref>[http://forum.vintagesynth.com/viewtopic.php?f=5&t=71748 Difference between Frac rack and Euro], Vintage Synth Explorer forum, May 2013</ref>