Pearl - any one got old schematics ?

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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briggs
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Post by briggs »

I've got into the old Pearl effects. So far I've got schemes for the od-05 overdrive, co-04 compressor, ad-08 delay, fg-01 flanger, oc-07 octaver and ch-02 chorus.

Any others you've got would be great. Especially the ds-06 distortion, ge-09 graphic eq, pe-10 parametric eq or the very strange th-20 thriller!

Many thanks.
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estragon
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Post by estragon »

Apart from the ones you mention, I have PH-03 Phaser (original scan). Let me know if interested.

Do you have an original scan or a traced schem for the AD-08 delay?

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Post by briggs »

Hey there, I just found the phaser scheme. What is that unnamed chip? Cmos logic?

I've got the AD-08 scheme, I'll email it if you like?
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estragon
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Post by estragon »

I would bet IC4 is most likely a CD4069UB based on the pinout.

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Post by seniorLoco »

the very strange th-20 thriller!
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oh boi ... must be somekinda crotch grabbing effect :lol:
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Post by Dirk_Hendrik »

estragon wrote:I would bet IC4 is most likely a CD4069UB based on the pinout.

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As far as I remember it is.
Sorry. Plain out of planes.

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JRC4558D
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Post by JRC4558D »

Files in Media/Electronic Circuit Schematics/Guitar and Bass Effects

http://www.freeinfosociety.com/media_in ... &subcat=11

very nice database!

cheers

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