BUILD REPORT: One Knob Fat Fuzz

[Renegadrian]

I was lazily browsing thru the new schems today, here http://www.aronnelson.com/gallery/main.php?g2_view=dynamicalbum.UpdatesAlbum&g2_page=3

I saw someone's been busy uploading layouts, eh?! 

Been tinkering about some, also I wanted to build something with little components and FAST...
I decided to go for the One Knob Fat Fuzz


A quick glance at my parts bin, got all the parts so here we go...
But hey, wait...I got those big 1uF MKT cap, usually they are 3 holes wide...So I decided to redraw the layout, according to my space (and big MKT) needs...

Here is my layout...


So here's how it turned up...


I used a 2N5088, I read somewhere that it can substitute the 2N3904, also a 2N5089 would fit, I believe...
Well, I'm more into high gainers, Hard Rock/Metal pedals, so this isn't my cup of tea, but I enjoyed it much anyway!!!
It has got a...FUZZY sound (well... It's a fuzz!!!  - so no surprise... ) <---Sorry for being stupid
Nice tunes I believe to sound great with this little fuzz...The man who sold the world, My Sharona, some (sigh) white stripes...
Hopefully I'll post some clips tomorrow...Also gotta find an enclosure for this one...

For now a big THANK YOU to Dragonfly for the layout!!!

[Renegadrian]

http://it.youtube.com/watch?v=aaochA4mmAw
I believe it's close with some chorus added...

Also I remember a song from village people, 5 o' clock in the morning...
And some tunes from Santo and Johnny...
Plus a million others...

It gives a nice fuzzy overdriven sound that cleans well with the volume swells, also has a distinct tone-rolled-back sound...
I like it!!!

[oneeyedog]

Hello again, now that I have my valvecaster finished, or at least working (still need enclosure) I'm lokng for project no 2!! This looks like the one... small question, what does the small red box with the red dot signify ?
cheers
john

[anchovie]

Cut the track at that point.

[oneeyedog]

thank you 

[oneeyedog]

so I got the bits and got my first vero board project built... the bypass is good but when I press the switch it turns into a radio receiver  
any thoughts ?? I see a link on the first page ( Renegadrian) to a layout but I cannt connect there, can you repost the link?
cheers
john

[deadastronaut]

did you use a shielded cable on the input?...thats my guess!..

[Renegadrian]

I see a link on the first page ( Renegadrian) to a layout but I cannt connect there, can you repost the link?

[deadastronaut]

hi adriano..

do you have a soundclip of this?..

[arma61]

c'mon Rob!! , build it!  less than 10 mins on a breadboard..... and let us hear your sounclip demo!!!

[deadastronaut]

c'mon Rob!! , build it!  less than 10 mins on a breadboard..... and let us hear your sounclip demo!!!

ha ha ha ha.......yeah could do...ha ha ha.....might tinker with it......

[deadastronaut]

ok i took up the challenge from armando......just breaded it.for a bit of fun.....not my kind of sound but heres a clip....

http://dl.dropbox.com/u/7464107/okf.mp3

needs lots more gain imo....

rob.

[deadastronaut]

hi i just messed around with this again .for a bit of fun......heres the higher gain version....strange chords too...

http://dl.dropbox.com/u/7464107/okf22.mp3

i changed the input cap to a 10nf..(100nf was too bassy for me)..then put the whole circuit into a 386...with a 4.7uf across the + and -.

sounds better to me anyway ...

one knob and chip fuzz...ha ha..

[Govmnt_Lacky]

Pretty nice clip Rob.

Just a thought... Has anyone thought about incorporating this circuit with a 386 and slapping it into a 1590A with a few 3V batteries....

Can you see where I am going with this? 

This would be a pretty nice, compact, pseudo Pocket Rocket with Fuzz!

Good idea/Bad idea? 

[arma61]

(100nf was too bassy for me)

Doesn't "Fat" in the name mean "bassy"

then put the whole circuit into a 386...

again!

http://dl.dropbox.com/u/7464107/okf22.mp3

...btw well done, I think that in this case it fly away from "fuzz" sound, isn't it ? may be "playing" with the collector's resitor to bias the transitor correctly, just like with a FF ? (not sure what I'm talking about!  )

[deadastronaut]

Pretty nice clip Rob.

Just a thought... Has anyone thought about incorporating this circuit with a 386 and slapping it into a 1590A with a few 3V batteries....

Can you see where I am going with this? 

This would be a pretty nice, compact, pseudo Pocket Rocket with Fuzz!

Good idea/Bad idea? 

i think i see where your going...into the realms of tiny pedals?...'show us your 1590b pedals' thread perhaps?..

[deadastronaut]

(100nf was too bassy for me)

Doesn't "Fat" in the name mean "bassy"

then put the whole circuit into a 386...

again!

http://dl.dropbox.com/u/7464107/okf22.mp3

...btw well done, I think that in this case it fly away from "fuzz" sound, isn't it ? may be "playing" with the collector's resitor to bias the transitor correctly, just like with a FF ? (not sure what I'm talking about!  )

hi armando....yep! bassy = fat...can always be switched though!..if fats ya thing!!! ha ha..

and yes i have turned into a '386' monster ...but hey its an excellent amp....

i did try a trim on the drain..no difference...!!!!....

i promise to start using different chips though..i just got given a load of  741's...and 072's.....so beware!!!!
watch out for lots of projects using them..ha ha....

@oneeyedog.....sorry for hijacking this thread!..

[oneeyedog]

finally got around to gtting this pedal to work! and it does... yeeeah! sounds really dirty on my yamaha sg with the buckers but hardly changes the tone on my G&L asat which is what i wanted to use it on. I'm searching for a "stonsey" type slight overdrive... any thoughts or better perdal projects for this?
cheers
john