FX25 Envelope Filter
ENVELOPE FILTER
Description
The DOD FX25 Envelope Filter is a classic automatic wah effect produced between 1982 and 1997 as part of the FX series. It is based on a bandpass filter circuit derived from the earlier DOD 440, using the input signal strength to trigger frequency sweeps. The pedal is renowned for its minimalist two-knob interface, featuring Sensitivity to set the threshold and Range to control the sweep's frequency depth. It became a cult favorite among bassists for its ability to produce deep, "dubby" sub-bass tones and distinctive funk "quacks." Notable users like Flea of the Red Hot Chili Peppers helped solidify its status as a staple for funky, touch-responsive filtering. The original circuit is prized for its simplicity and organic response compared to more modern digital alternatives.Media
Videos
Demo by Vintage Guitar Workshop (ES)
Demo by Paul Besselle Music (EN)
Technical data
Width
000.00 mm
Depth
000.00 mm
Height
000.00 mm
Weight
000.00 mm
Circuit type
analog
Voltage
9V DC, center negative
Current
10mA
