Kimberly Buzz Box and Volume Expander pedal 1968

pinkjimiphoton · Post by **pinkjimiphoton** » 16 Nov 2013, 00:51

i asked, the guy never responded after that, probably figured out i was hoping to clone it.

pinkjimiphoton · Post by **pinkjimiphoton** » 13 Dec 2013, 21:41

2N2613(Ge-PNP/TO-1) RCA NIP || Pcmax=120mW Vcbo=-30V Ic=-50mA Tj=100Ž hFE=120min fT=4MHz Cob=20pF

we've been working on this...

should have a complete schematic and several very cool variations as projects soon!!

ashleyslidewhip · Post by **ashleyslidewhip** » 20 Dec 2013, 18:25

Bump! Don't mean to be rude, but did we get a schematic of this? I just love the fuzzrite schemo, it's so elegant

pinkjimiphoton · Post by **pinkjimiphoton** » 20 Dec 2013, 20:03

yeah, we have a schematic, pics, and what we believe to be the correct circuit with several variants.
we'll be posting it all soon!!

Post by **GodSaveMetal** » 22 Dec 2013, 16:55

pinkjimiphoton wrote:yeah, we have a schematic, pics, and what we believe to be the correct circuit with several variants.
we'll be posting it all soon!!

OHHHH!! great I be TUNED on this!!! have 100´s of Ge NPN/PNP NOS!!!

pinkjimiphoton · Post by **pinkjimiphoton** » 22 Dec 2013, 18:12

i gotta build the proof of concept circuit today bro. and still not completely sure of cap or pot values.
but the circuit works and is running in about 5 or 6 different variations.

it appears to be almost identical to the "kimberly" buzz box/expander.

it's a fairly forgiving circuit.

here's a vero of what i build today to hold ya over... lol

note, at this point it is NOT verified, but i bet it will work. so far every single variant has fired up right out of the gate.
my fuzzy balls boost project is a variant of this circuit as well.

anyways... build at your own risk. should be easy enough to draw your own schematic from if you're too impatient.

and of course, not for commercial use. build one. build 10 for your friends. don't be a scumbag tho and rip us off. not you brother, i just mean in general.

pinkjimiphoton · Post by **pinkjimiphoton** » 22 Dec 2013, 18:15

ps... originals had wax electrolytic caps, and were pnp.
my layout uses .22 chicklets, the specc'd caps are .22 electros from what we can tell so far.

my version you can build as either pnp or npn simply by changing the polarity of the power supply and the transistors.
could probably do it with a footswitch, tho it would be kinda pointless i think.

deltafred · Post by **deltafred** » 22 Dec 2013, 20:40

LucifersTrip wrote:...and is that a yellow/white/red/silver = 4.9K (if orange, 49K) ?

My guess is Orange/White/Red/Silver - 3.9K

They are carbon comp resistors so will probably be E12 range.

pinkjimiphoton · Post by **pinkjimiphoton** » 17 Jan 2014, 00:23

we've got this thing built and running in several variants.

it is the same as the kimberly buzzbox and expander.

will post schematics and layouts as soon as we figure out which ones are which... this generated like, 5-6 different fuzzes.

Kimberly Buzz Box and Volume Expander pedal 1968 [schematic]