[sdiy] Gristleizer?

[Tom Arnold]

On Wed, Mar 08, 2006 at 05:09:34PM -0800, James Petts wrote:
>    I was just going through some old music, and found some old Throbbing
>    Gristle stuff, which made me wonder. Has anybody ever figured out
>    exactly what the "Gristleizer" was, and built a clone?
>    Foonlybot 9000

Have a look at this :
http://www.edge-effect.co.uk/waffle/ge/

And then this :
http://elektra.mine.nu/anders/pdf/gep.pdf

Supposedly this is what Chris Carter built several of for friends.
More digging on the net finds this description from Chris himself :
"a black metal case containing one circuit board and two 9v batteries. The
front panel had five knobs and two switches and two LEDs, while the back
panel contained four sockets. the front panel controls were: speed, depth,
shape, VCA/VCF, bias, effect on/off. Rear panel sockets were: Audio in,
audio out, ext., VC in and foot switch. 
A single PCB incorporating a voltage controlled low pass filter, a voltage
controlled amplifier and a low freq. oscillator. The VCA and VCF were
controlled (modulated) by the LFO, which could produce four output waveforms
[ramp, saw, triangle, and square]. The LFO speed was variable from zombie
slow to psycho fast and an LED showed how fast it was running. The VCA could
be over-driven and the VCF could oscillate. 
Because the VCA could be over-driven it could produce some nice grungy
effects and the fact that the VCF could be pushed into oscillation allowed
for some pretty shrill noises. The ultimate Gristleizer effect, which it
excelled at, was the awesome 'throbbing mayhem' effect-a cross between a
fuzzbox and a ring modulator on acid. "

>From that description and looking at the schematic of the GEP.  I'd build it
and bring out the two trimpots on the main board as they do what the missing
2 knobs should do...


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