Skip to content

notes to self

a document of a plodding mind

Menu
Menu

DOD FX69B Grunge insanity mod…

Posted on September 8, 2013March 19, 2014 by abram

dod_fx69b

this “insanity” mod makes this pedal sound much more insane that the original version. i dropped in a couple of germanium clipping diodes between gain stages for a warmer, beefier tone and decided to mess with the active filters that control the two-band EQ. the filters now allow each band to be driven into cutoff to make more PWM type wave forms when in the lower positions. if the player doesn’t want 8-bit computer sounds, he or she can bring the filters up to the horizon level (about 90 degrees on the left side of the straight up postition) to acheive cutoff when no signal is present from the instrument. i also maxed out the gain for a ferociously loud effect. the “loud” knob under the halfway mark about 7dB over the clean signal. both audio samples are recorded direct with no effects whatsoever.

original sound:
http://abrammorphew.com/notes/wp-content/uploads/2013/09/dod_fx69b_orig1.mp3

modded sound(s):
http://abrammorphew.com/notes/wp-content/uploads/2013/09/dod_fx69b_mod_final.mp3

this item is for sale on eBay.

Leave a Reply Cancel reply

You must be logged in to post a comment.

about

Abram Morphew is an electrical engineer, bedroom musician, composer, naturalist, and amateur scientist. I play music in the the binary marketing show. This blog is a catalog of stuff that I make or bits of information that I think could prove useful later on when memory fails me.

 

I currently hold an Extra Class Amateur Radio Operator license and transmit on the air as K2NXF.

Tags

40m amp amplifier Arduino atmega328 atmel audio bash bjt breadboard circuit code cw delay digital effect effects electrical electronics homebrew lfo linux LM386 mellotronium music no. 5 opamp oscillator pcb pedal photos php pt2399 pwm radio rf schematic stereo stompbox synth tape TDA2040 tl072 TL082 tube

Social

  • Instagram
  • LinkedIn

Space Weather


© 2026 notes to self | Powered by Minimalist Blog WordPress Theme