2N3904s in BMP?

Started by lightningfingers, May 30, 2004, 11:55:03 AM

Previous topic - Next topic

lightningfingers

im building a Big Muff at the moment, but it has to be minimal cost (no bypass no knobs, housed in a lunchbox covered in duck tape) and the only NPNs i have around me at the moment are some 3904s. What do these sound lik in a BMP? anyone tried it?
U N D E F I N E D

sir_modulus

Search around for my post called Metal Muff PI, as it has lots of BMP mods. I used Wi8 (white) face 3904's on my stuff they sound real good. normal 3904's sound good, almost equal (if not better)  than 2N5088's. Use fairchild ones as they (In My Opinion) sound the best of normal 3904's.

lightningfingers

hmm thats lucky. the ones i have are from fairchild too 8)

thanks
U N D E F I N E D

Arno van der Heijden

The Way Huge Swollen Pickle (a BMP clone with some tweaks) uses a four transistor array which basically consists of four 3904's. This pedal is getting rave reviews so I guess they don't sound to bad.....

petemoore

I can't remember the Chip#, but it was in a 14 pin [7 per side] configuration, and the Hfe's were much closer than 'grab bag of 3904's..would render.
 There was speculation that for ease of build and consistant component availability, the quad transistor chip was chosen for the WH muff style circuit. For some reason, I never put that chip to use, only 1/4 of it at a time used as a single transistor.
Convention creates following, following creates convention.

Fret Wire

Quote from: Arno van der HeijdenThe Way Huge Swollen Pickle (a BMP clone with some tweaks) uses a four transistor array which basically consists of four 3904's. This pedal is getting rave reviews so I guess they don't sound to bad.....

It was the MPQ3904. NTE's sub is the NTE2321. Mouser stocks them both. Has anyone tried them for a bmp clone yet? The benefit wasn't sonic, though. No individual transistors to accidentally invert the pinouts on. It must also use less board real estate for the 14-pin array versus individual transistors.
Fret Wire
(Keyser Soze)