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SOLD DOD FX25 Envelope Filter '80s 2-knob original series with box, rare vintage complete piece

Discussion in 'For Sale: Effects and Pedals' started by eddiebo, Jan 15, 2018.

  1. eddiebo

    eddiebo Supporting Member

    Nov 13, 2002
    Montclair, NJ
    New Jersey
    SN: FX285071 dates to 1983 or '84

    All original, battery door intact, no modifications, with box. Super clean fully functional collector piece.

    The FX25 Envelope Filter was derived from DOD's well-received 440 Envelope Filter. Like the 440, the FX25 uses a bandpass filter circuit where the peak frequency is determined by the input signal level, for a touch-controlled wah or auto-wah effect. The FX25 was one of the original ten DOD FX-series pedals that debuted in 1982, and remained in production until it was replaced by the FX25B in 1998.
    • Technical info:
      • Specifications (circa 1984): Input impedance = 500 k Ohms, Output impedance = 1 k Ohms; Filter frequency range = 50 Hz to 2.5 kHz; Filter Q (Range) = variable 1-100; Gain = O dB

      • Notable IC chip: two RCA CA3094E high-current OTAs and one TL022CP op amp (1984); one LM13600N dual OTA and one MC1458CP op amp (1987)
    USPS Priority shipping / tracking included

    IMG_20180115_104325. IMG_20180115_104344. IMG_20180115_104357. IMG_20180115_104405.
    bass08053 likes this.

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