colorsound fuzz

Hepcat · October 03, 2006, 07:47:21 PM

I think i am going to put together a parts list for my next project, i am going to build the colorsound one knob fuzz using the dragonfly tutorial . I was looking at the layout and noticed one of the resistors labeled 820 R is this a mistake, should it be 820 K ? Thanks -Josh-http://aronnelson.com/gallery/album21/COLORSOUND_ONE_KNOB_FUZZ

Dragonfly · October 03, 2006, 07:59:03 PM

nope...no mistake...the "R" is how you designate "ohms"...so 820R = 820 ohms

AC

ps...its a REALLY good sounding fuzz !

Hepcat · October 03, 2006, 09:12:27 PM

cool , thanks alot cant wait !

Thomas P. · October 04, 2006, 03:00:38 PM

on a further note:
sometimes people who are drawing schematics often use "R" to indicate ohms to make sure the reader knows that the value is really in ohm's and the drawer not just forgot a "k" or a "M".

Regards

8bitapocalypse · October 04, 2006, 06:04:00 PM

i am in the process of building this also, i have breadboarded it and it works fine seemingly, but i have a couple of questions.

1) is the pot meant to change the fuzz AND the volume, as it seems to do this with my build.

2) RE the 100u cap - i used a 63v electrolytic, would a smaller voltage cap be more suitable?? would this change the sound at all?? i am unsure exactly what voltage caps to use as i have read lots conflicting viewpoints!

any help would be appreciated, this seems like a great forum!!

Dragonfly · October 05, 2006, 12:55:59 AM

Quote from: 8bitapocalypse on October 04, 2006, 06:04:00 PM
i am in the process of building this also, i have breadboarded it and it works fine seemingly, but i have a couple of questions.

1) is the pot meant to change the fuzz AND the volume, as it seems to do this with my build.

the pot shouldn't affect the fuzz, unless you accidentally put it BEFORE the circuit...if done correctly, it only affects the output volume.

Quote
2) RE the 100u cap - i used a 63v electrolytic, would a smaller voltage cap be more suitable?? would this change the sound at all?? i am unsure exactly what voltage caps to use as i have read lots conflicting viewpoints!

in this circuit, it won't change the sound a bit...you can use anywhere from a 16v cap on up ....

Quote
any help would be appreciated, this seems like a great forum!!

it is...thanks to Aron, RG, Mark, Gus, and WAY too many others to be able to mention...everyone here gives freely of their time and knowledge, and oddly enough, unlike other forums, we don't seem to get all the "trolling", "bashing", and silly internet fights...everyone here keeps it civil !

AC

8bitapocalypse · October 05, 2006, 06:42:32 AM

thanks a lot dragonfly ; )

i have just had a look at my breadboard and the ground wire on the pot is wired 1 'strip' up! will move the wire to the right place and hopefully all will be well!

Barcode80 · October 08, 2006, 04:21:02 AM

i'm doing this build too. I have everything built except I have no metal cap trannies. would silicon work? maybe a 2N3904?

Dragonfly · October 08, 2006, 04:28:21 AM

Quote from: Barcode80 on October 08, 2006, 04:21:02 AM
i'm doing this build too. I have everything built except I have no metal cap trannies. would silicon work? maybe a 2N3904?

yep...they'll work fine...i prefer the sound of the bc108/bc109's , but most and npn silicon will work...you can just use transistor sockets and that way you can "audition" transistors in the circuit to find which ones work best for you....

AC

Barcode80 · October 09, 2006, 11:39:58 PM

i'm finding the pinout for the BC10x's a little hard to make out from the layout. could you clarify pinout arrangement as it related to the vero layout. i know the emitter is the pin nearest the bottom of the layout, but how are the other two arranged?

Dragonfly · October 10, 2006, 02:30:02 AM

collector at top
base in middle
emitter on bottom

the bc108s have the same pinout as 2n3904's....

AC

Barcode80 · October 10, 2006, 06:52:11 PM

i got no 500k's either. but i do have a 1Meg. would that work? do i need to tie in resistors to make it work?

Hepcat · October 11, 2006, 01:56:39 AM

Just finished the fuzz, i actually built two of them I used a couple NTE 123a in one of them still experimenting with transistors on the other one couldnt find any BC 109 locally. They both sound really good . Heres a pic I built one of them in a tuna can used a lid they sell at grocery store to keep cat food for the bottom, works great! Thanks Dragonfly nice tutorial!

http://jubaglassbeads.com/josh-effectspics-011.jpg

Barcode80 · October 11, 2006, 04:39:42 PM

i built the circuit, but i haven't wired it up to the off the board parts and housed it yet. i built a few circuits as a challenge to myself where i build it ALL and don't test it before i put it all together, as a pressure to be very careful and such. so i'm going to build a few all the way and THEN test them.

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