{"product_id":"fairfield-circuity-20-more-slew-limiting-distortion-effects-pedal","title":"Fairfield Circuity 20% More Slew Limiting Distortion Effects Pedal","description":"\u003c!-- more --\u003e\n\u003c!-- split --\u003e\u003cbr\u003e\u003ch4\u003eSlew-Limiting Distortion with Attitude - The Fairfield Circuity 20% More Slew Limiting Distortion Effects Pedal\u003c\/h4\u003e\n\u003cp\u003eExplorations around a schematic found among old papers of mysterious origin, suspiciously similar to a datasheet sq\/tri oscillator. All that was needed was to connect the dots.\u003c\/p\u003e\n\n\u003cp\u003eA slew limiter smoothes out how quickly incoming voltage can change, limiting it to a fixed v\/sec. slope. Since time and frequency are intrinsically linked, this acts as a steep, somewhat distorted low pass filter.\u003c\/p\u003e\n\n\u003cp\u003eWhen it resonates, these fixed slopes become triangle wave oscillations, giving 20% more its unique sound. Input signals can overwhelm this oscillation, making for pseudo-wavefolding and synthetic distortion artifacts.\u003c\/p\u003e\n\n\u003cp\u003ejfet clipping, sub and upper octaves, envelope follower, low pass gate; impressions, ideas, pleasures and pains\u003c\/p\u003e\n\n\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003ch4\u003eSPECIFICATIONS\u003c\/h4\u003e\n\u003cp\u003e\u003cb\u003eControls\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eINPUT – 'mu amp' JFET preamp, lots of gain\u003c\/li\u003e\n\u003cli\u003eBLEND – mixes in a square wave \/ sub-octave copy of the signal\u003c\/li\u003e\n\u003cli\u003eVOLUME – output volume, gets very loud\u003c\/li\u003e\n\u003cli\u003eSLEW – slew limiter frequency\u003c\/li\u003e\n\u003cli\u003eFEED – slew limiter feedback\u003c\/li\u003e\n\u003cli\u003eLPG – low pass filter\u003c\/li\u003e\n\u003cli\u003eD - OCTAVE DOWN – clock division of the blended square wave, -1 or -2 oct\u003c\/li\u003e\n\u003cli\u003eU - OCTAVE UP – analog octave up, full wave rectifier\u003c\/li\u003e\n\u003cli\u003eE - ENVELOPE DESTINATION – routing of the internal envelope, either added to the (L)PG or (F)EED controls\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eConnections\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIN – 1\/4\" instrument or line input\u003c\/li\u003e\n\u003cli\u003eOUT – 1\/4\" output\u003c\/li\u003e\n\u003cli\u003eCV – versatile 1\/4\" TRS CV\/Exp port, see programming guide\u003c\/li\u003e\n\u003cli\u003eS – 1\/8\" input\u003c\/li\u003e\n\u003cli\u003eCV over slew limiter frequency, v\/oct\u003c\/li\u003e\n\u003cli\u003e9VDC – 2.1mm centre negative tip, 20 mA (sags quite well)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cb\u003eDimnesions\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eDimensions – 4.7\" x 3.8\" x 1.9\"\u003c\/li\u003e\n\u003cli\u003eCV Input Range – 0 - 5V normal; 0 - 8V max\u003c\/li\u003e\n\u003cli\u003ePower Supply – 9VDC\u003c\/li\u003e\n\u003cli\u003eCurrent Draw – 20 mA @ 9.6 VDC\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003c\/p\u003e\n\u003cbr\u003e\n\n\n\nManufacturer: Fairfield Circuitry MAS Distro\u003cbr\u003eModel: FC-20M\u003cbr\u003eSKU: I827222-N-2-WHXB\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003cb\u003eWe are Chuck Levin's Washington Music Center\u003c\/b\u003e\u003c\/p\u003e\u003cp\u003eSince 1958, Chuck Levin’s Washington Music Center has been the trusted destination for musicians and audio professionals across Maryland, Virginia, and Washington, D.C. Family-owned and operated, our legendary music store delivers Everything in Music®—from instruments and recording gear to pro audio, rentals, and repair services.\u003c\/p\u003e\u003cp\u003eOur team of musicians and industry experts lives and breathes gear, helping you build the perfect setup for your next performance, studio session, or installation. As an authorized dealer for top brands, we also offer our award-winning CHUCKSCLUSIVE line—exclusive, limited-edition instruments and collaborations recognized with the NAMM Top 100 Dealer Innovation Award for redefining what a music retail experience can be.\u003c\/p\u003e\u003cp\u003eChuck Levin’s isn’t just a store—it’s a community built by players, engineers, and creators who share a lifelong passion for sound. Stop by our legendary Wheaton, MD showroom or contact us anytime for expert advice, product questions, or the best possible deal on your next piece of gear.\u003c\/p\u003e\u003cbr\u003e\u003cp\u003e\u003c\/p\u003e","brand":"Fairfield Circuitry MAS Distro","offers":[{"title":"Default Title","offer_id":41905555603519,"sku":"I827222-N","price":359.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/0972\/9087\/files\/c7b3756c-73c7-48de-8ee3-449f41691c66.jpg?v=1753201811","url":"https:\/\/chucklevins.com\/products\/fairfield-circuity-20-more-slew-limiting-distortion-effects-pedal","provider":"Chuck Levin's Washington Music Center","version":"1.0","type":"link"}