{"product_id":"doepfer-a-101-8-photo-phasing","title":"DOEPFER A-101-8 PHOTO PHASING","description":"Module A-101-8 is a 8-stage phase shifter which uses light-sensitive resistors (LDR) and is a replica of the Compact Phasing A manufactured by the company Schulte in the seventies. The actual phasing circuit is identical to the historic model. Only the illumination control of the LDRs is different: the A-101-8 uses LEDs to illuminate the LDRs, the historic model used incandescent miniature lamps. And the A-101-8 has no built-in LFO but can be controlled by any external control voltage source (e.g. LFO, ADSR, random, Theremin, ribbon controller, sequencer, midi). The phasing offset (i.e. the base value for the phase shifting) and the modulation depth of the external control signal can be adjusted separately. The Compact Phasing A had no offset control but only a depth control for the built-in LFO. Feedback and mixing ratio of the output signal are set by two controls. The audio input is equipped with an attenuator. The module has two audio outputs available (same as the historic model) and a visual display of the phase shifting.\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003eThe module has these controls and in\/outputs available:\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eControl\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003eMan. : \u003c\/span\u003emanual control of the phase shift offset (base value)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eControl\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eCV:\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eattenuator for the signal applied to the CV socket\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eControl\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eFeedb.: Feedback or Resonance (similar function as filter resonance\/feedback\/emphasis)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eControl\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eMix: sets the\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003emixing ratio between\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eoriginal and phase shift signal appearing at output 1\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003efully CCW: only the modified input signal appears at output 1 (see note below *)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003ecenter: a mixture between the modified input signal and the phase shift signal appears at output 1, that's the standard position for the classical phasing effect\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003efully CW: the pure phase shifted signal\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eappears at output 1\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e(e.g. for vibrato effects)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eControl\u003cspan data-mce-fragment=\"1\"\u003e Input Level: \u003c\/span\u003eattenuator for signal applied to the In socket\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSocket In: audio input\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSocket CV: control voltage input \u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSocket Out 1: audio output 1 (mix signal)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eSocket Out 2: audio output 2 (\u003c\/span\u003emodified input signal)\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLED: visual control of the phase shift\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe module has some peculiarities (same as the \u003c\/span\u003ehistoric model):\u003c\/p\u003e\n\u003cul style=\"font-weight: 400;\" data-mce-fragment=\"1\" data-mce-style=\"font-weight: 400;\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThe input signal is processed at first by a pre-stage which outputs a \"modified\" input signal (*). This signal is not processed by the phase shift stages but is affected by the feedback setting. Only when feedback is set to zero this signal is identical to the input signal. Otherwise it contains feedback components.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThis signal is output on socket Out 2.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eWhen both output sockets Out 1 and Out 2 are used as stereo channels one obtains a spatial stereo sound effect. \u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThe same signals is also used for the CCW position of the mix control. With mix control fully CCW the unmodified signal appears only if the feedback control is set to zero. Otherwise it contains feedback components.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cspan data-mce-fragment=\"1\"\u003eThe \u003c\/span\u003ehistoric model had two audio inputs: one 5-pin DIN socket and a 1\/4\" jack socket. The DIN socket was intended for high-level line signals. When the 1\/4\" jack socket was used the amplification of the pre-stage increased by about 100. The 1\/4\" jack socket was intended for low level signals (e.g. electric guitars or microphones). For this feature the A-101-8 has an internal jumper that can be used to increase the amplification. As long as the module is used within the A-100 system usually the lower amplification is used to avoid distortion.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003eThe 8 photo resistors and LEDs are assembled within an small lighproof box. In addition the pc boards are made of lighproof black material to avoid interfering light from other modules or the bus board.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cmeta charset=\"UTF-8\"\u003e\u003cspan face=\"Arial\" size=\"2\" style=\"font-family: Arial; font-size: small;\"\u003eBreite\/Width: 4 TE \/ 4 HP \/ 20.0 mm\u003cbr\u003e\u003c\/span\u003e\u003cspan face=\"Arial\" size=\"2\" color=\"#000000\" style=\"color: #000000; font-family: Arial; font-size: small;\"\u003eTiefe\/Depth: 45 mm (gemessen ab der Rückseite der Frontplatte \/ measured from the rear side of the front panel)\u003cbr\u003e\u003c\/span\u003e\u003cspan face=\"Arial\" size=\"2\" style=\"font-family: Arial; font-size: small;\"\u003eStrombedarf\/Current: +30 mA (+12V) \/ -30 mA (-12V)\u003c\/span\u003e\u003c\/p\u003e","brand":"DOEPFER","offers":[{"title":"VINTAGE","offer_id":42268571828397,"sku":"A-101-8V","price":179.0,"currency_code":"USD","in_stock":false},{"title":"SILVER","offer_id":42268571861165,"sku":"A-101-8","price":167.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0606\/3449\/7197\/products\/101-8v.jpg?v=1688065115","url":"https:\/\/www.detroitmodular.live\/products\/doepfer-a-101-8-photo-phasing","provider":"Detroit Modular","version":"1.0","type":"link"}