The Mad Professor Blueberry is a bass overdrive that is based around the BJF Honeybee circuit. Lohstah over at the freestompboxes forum decided to trace one and this is what he found;
Check out the Mad Professor page for more info or have a look at this youtube video;
There is a full PCB layout here, in the freestompboxes thread;
http://freestompboxes.org/viewtopic.php?f=7&t=12986
Great page! I've seen that MP uses zenerdiode 5v1 (D4) in many of his pedals. What's is the purpose for this? thanks in advance
ReplyDeleteTo ensure right voltage for LED.
ReplyDeleteClassic pedal indeed! For bass it delivers a fat, thick sound, and on guitar through a clean amp it creates a dense, slightly overdriven tone. Between jam sessions, I like to try my luck at lexcasino . Where do you place yours in the signal chain?
ReplyDelete