49 Fuzzy Kittenz - schematic

[stringsthings]

it was a dark and fuzzy night. 

the boss ( Lucky ) was breathing down my neck.  This is my story. My name is Bugs_Fuzzy, ace pedal technician and all-around swell guy.

the other morning, Ms. Boss Cat was complainin' that the Pedal Factory was not doing so very well in the stock market.  so she insists that i make another fuzz box.  go figurez.  so i saddles on up to the computerz and find something that will please that oh-so-difficile-to-pleez kitty cat boss lady.  and what do i find?  Craig Anderton's Tube Sound Fuzz! ... ( but Lucky doesn't know that it's not our design ... hee hee )

so i workz up a schematic  ...  and carefully selected component values are modified using the proven "dartboard method" ... and i perf the job very quietly .... ( because Lucky sleeps a lot ... a whole lot ) and then i hook up the circuit to the Pedal Factory's vintage test equipment and it sounds a bit harsh ... so i decidez to incorporate Mark Hammer's SWTC to the circuit ... and voila!  the harshness gets tamed and the circuit is sounding much betterz ...

... and then Lucky tells me to include a voltage sag control becuz the 4049 seems to respond well to minor voltage reductions ... ( she may be a kitty cat, but she does have exceptional fuzz-box instincts )

enjoy!

[thedefog]

Cool simple circuit. I'll breadboard it tonight. I tried to do a simulation, but I've never used it before so I don't know what I'm doing.  http://www.falstad.com/circuit/

Code Select Expand

$ 1 5.0E-6 2.803162489452614 56 5.0 50
I 320 304 400 304 0 0.5
r 224 304 256 304 0 100000.0
c 256 304 320 304 0 1.0E-7 1.902601130872641
w 320 304 320 256 0
w 400 304 400 256 0
c 320 256 400 256 0 1.0E-11 3.0399291516244547
r 320 256 320 192 0 4700000.0
w 320 256 288 256 0
r 288 256 288 192 0 100000.0
174 368 192 400 192 0 1000000.0 0.5891000000000001 Gain
w 320 192 368 192 0
w 400 192 400 256 0
w 400 192 400 160 0
w 400 160 384 160 0
w 384 160 384 176 0
c 400 304 448 304 0 4.7E-8 -2.5005283771854265
I 448 304 512 304 0 0.5
w 448 304 448 256 0
w 512 304 512 256 0
w 512 256 512 192 0
w 448 256 448 192 0
r 448 192 512 192 0 1000000.0
c 512 256 448 256 0 1.0E-11 2.4994716228145735
r 512 304 576 304 0 1000.0
174 640 304 576 304 0 10.0 0.5297000000000001 Tone
c 608 320 608 368 0 3.3E-8 2.450759507939929
g 608 368 608 384 0
174 640 304 640 240 0 50000.0 0.0050 Volume
g 640 240 640 208 0
c 624 272 576 272 2 9.999999999999999E-6 9.999999899719114E-4
w 144 304 224 304 0
v 80 288 128 288 0 0 40.0 5.0 0.0 0.0 0.5
w 128 288 144 304 0
O 576 272 576 208 0
174 80 384 144 384 0 50000.0 0.5099 Sag
w 144 384 144 352 0
w 144 352 112 352 0
w 112 352 112 368 0
d 144 384 192 384 1 1.2
r 192 384 192 352 0 100.0
R 192 352 240 352 0 0 40.0 5.0 0.0 0.0 0.5
c 192 384 192 432 0 1.0E-4 4.999999999938832
g 192 432 224 432 0
g 80 288 80 240 0
R 80 384 80 336 0 0 40.0 5.0 0.0 0.0 0.5


[Renegadrian]

[Taylor]

Cool simple circuit. I'll breadboard it tonight. I tried to do a simulation, but I've never used it before so I don't know what I'm doing. 

The inverters in Falstad's simulator do not work for linear applications - they only are usable for digital logic stuff, so stuff like this will not work. I think even "real" simulators often have some trouble simulating digital gates in linear mode.

[FUZZZZzzzz]

looks like fun! if only i wasnt drowning in a sea of unfinished boxes.. id give it a try.. 

[stringsthings]

here's an audio clip of the pedal in action:

http://soundclick.com/share?songid=10645381

altho the Pedal Factory is in the busy season, a vero-board layout is being worked on ...

[stringsthings]

for your soldering pleasure:



for more gain in lead mode, increase R6 ... watch out for oscillations, though ...

experiments with C7 are also encouraged ....

enjoy! 

[EATyourGuitar]

your clip sounds like a muddy bassy thing going into an overdrive. maybe some filtering at the input to get the mud out and you might actually have something useful for rhythm playing. anyway, nice work. call it the cat fuzz since your cat designed it.

[Top Top]

your clip sounds like a muddy bassy thing going into an overdrive. maybe some filtering at the input to get the mud out and you might actually have something useful for rhythm playing. anyway, nice work. call it the cat fuzz since your cat designed it.

Didn't sound that bad to me 

[John Lyons]

I thought the clip was fine as well.