Proco - Rat ( History )

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...
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dosmun
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Post by dosmun »

For anyone that is a fan of the Rat. Here is a webpage I threw together.
http://webpages.charter.net/daosmun/

Bernardduur
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Post by Bernardduur »

Awesome.........

Anyone knows what happens inside a Juggernaut?
'No more....... loud music.......'

junkwork
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Post by junkwork »

Juggernaut ver1.jpg looks so cool.

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modman
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Post by modman »

Haven''t look at everything, but :shock: looks like a lot of work went into that, wow. This is the kind of website that I like: a specific subject niche and first hand info).

bookmarked! :wink:
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toneman
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Post by toneman »

VERY nice RAT website dosmun :thumbsup
8)
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alteredsounds
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Post by alteredsounds »

Very cool, just what u want, all the facts, well laid out. Excellent :thumbsup (wish I could get my bloody Sola / Colorsound article finished that well!)

dosmun
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Post by dosmun »

Glad someone likes it. It was my first try at doing a website but it turned out OK. Most of the pedals are mine except for the Juggernaut which I don't own one yet and the R2DU but I did aquire one of those after I put the site up but never changed the pic, and of course the pic from the 1st 12 Rats made.

I'm not sure why ProCO started using a Log taper pot on the Filter control but the first issues that use a Linear taper sound much better because you have a lot more usable range.

I'm always up for suggestions or additions.

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toneman
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Post by toneman »

hey dosmun,

try linking with other RAT sites. Especially those with Schemos... 8)

here are a few that I found while drinking coffee & googling.....

http://happybob.com/rstrand/rat/rat_versions.htm (good links for schemos AND history)

http://filters.muziq.be/model/proco/rat

https://www.diystompboxes.com/pedals/schematics.html

https://www.diystompboxes.com/pedals/PCRAT1.GIF

May all your RATS be wild!

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Dirk_Hendrik
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Post by Dirk_Hendrik »

:roll:

That schematic should be forbidden. Vanish off the surface of the planet. Be ritually burned or whatever. I'll leave it to RG to tell wether he has ever seen a RAT with a FET input buffer*. I haven't ever and I've seen a lot of RAT's over the last couple of years. However the positive feedback in this schematic (the gainn determining components should be connected to pin 2 and not pin 3 of the opamp) is the major definite error.


* Having seen newer versions by RG's hand make me suspect he knows :wink:
Sorry. Plain out of planes.

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Post by marshmellow »

Then you should also blame Jack Orman. He did the corrections. :shock: :hmmm:

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Post by guiltyspark »

There are definitely some wrong schems out there, but I think the input buffer thing may be correct. I have a late 80's "LED in A" Rat with TWO transistors + IC, leading me to believe it has an added input buffer. The earlier non-LED Rats had ONE transistor and were better sounding IMO.

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Post by analogguru »

guiltyspark wrote:There are definitely some wrong schems out there, but I think the input buffer thing may be correct. I have a late 80's "LED in A" Rat ....
Hows about guts ?
....with TWO transistors + IC, leading me to believe it has an added input buffer. The earlier non-LED Rats had ONE transistor and were better sounding IMO.

Guiltyspark
....because maybe the second transistor is used for LED-switching an not as an input buffer ? :roll:

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