SMOOTH FUZZ

[Tham]

This was from the September 1979 issue of ''Practical Electronics''
magazine.

I built this in 1986, initially with a Veroboard and a plastic box.

A guitar luthier in a local part-time amateur band, who actually
made his own Ibanez Musician-type guitar, later made a couple
more for himself and his second lead, and made a nice aluminium
box for me as well.

R7 can be replaced with 100K variable resistor pot as the
Distortion control.

The effect still tended to be a little fuzzy, so R5 may be reduced
to 200k for a gain of just 50, and C5 and C6 could be increased to
680 - 820 pf to filter off a bit more of the high frequencies.


http://www.spontis.se/pdf/sf.pdf



This guy built one.

http://tagboardeffects.blogspot.my/2013 ... -fuzz.html



That issue of Practical Electronics also featured a project for a six channel mixer,
so it might be a good idea to get the old magazine as well.

http://www.ebay.ie/itm/162234473388


     
   

[Tham]

Sorry, the above link where that guy built this effect was broken.

http://tagboardeffects.blogspot.my/2013/01/smooth-fuzz.html


Here's his video.

Note that the crude DPDT pushbutton bypass switch, S1, will
give off a loud ''clunk'' sound when switched on and off.

Thus it would be far better to incorporate an FET flip-flop 
like those Boss ones for professional silent switching.


It would also be a good idea to replace the tone circuit with
the more ''active'' one used in the Boss DS-1.


Better still, a TL071, or a TL074 in place of the TL072, could
also be used an active tone circuit similar to that shown in the
''audio tone control amplifier'' example in this datasheet, with
the values of the resistors and mica capacitors changed to
reflect more of an electric guitar's frequencies.

http://www.datasheet4u.com/download_new.php?id=321184

[bloxstompboxes]

Nice. Thanks! May give this one a go here sometime. Saved the PDF anyway.