Pearl - any one got old schematics ?

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
Post Reply
User avatar
briggs
Tube Twister
Information
Posts: 1971
Joined: 12 Jul 2007, 10:02
my favorite amplifier: Briggs Custom Suprono
Completed builds: Too many to still class myself as sane....
Location: Breaking into Heaven.
Has thanked: 27 times
Been thanked: 127 times
Contact:

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.
Image

I am Klon.

User avatar
estragon
Breadboard Brother
Information
Posts: 112
Joined: 19 Jul 2007, 16:00
Has thanked: 1 time
Been thanked: 10 times

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?

User avatar
briggs
Tube Twister
Information
Posts: 1971
Joined: 12 Jul 2007, 10:02
my favorite amplifier: Briggs Custom Suprono
Completed builds: Too many to still class myself as sane....
Location: Breaking into Heaven.
Has thanked: 27 times
Been thanked: 127 times
Contact:

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?
Image

I am Klon.

User avatar
estragon
Breadboard Brother
Information
Posts: 112
Joined: 19 Jul 2007, 16:00
Has thanked: 1 time
Been thanked: 10 times

Post by estragon »

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

PM sent.

User avatar
seniorLoco
Resistor Ronker
Information
Posts: 343
Joined: 05 Nov 2007, 09:43
Location: ASIA
Been thanked: 11 times

Post by seniorLoco »

the very strange th-20 thriller!
Image

oh boi ... must be somekinda crotch grabbing effect :lol:
"Curiosity may have killed the cat, but it saved the mice, who ate the cheese."

User avatar
Dirk_Hendrik
Old Solderhand
Information
Posts: 4181
Joined: 03 Jul 2007, 08:44
Location: Old Amsterdam
Has thanked: 228 times
Been thanked: 879 times
Contact:

Post by Dirk_Hendrik »

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

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

http://www.dirk-hendrik.com

User avatar
JRC4558D
Information
Posts: 22
Joined: 03 Feb 2010, 10:47
my favorite amplifier: Vox AC-30
Completed builds: Sola Sound Tone Bender MKI 1965, Electro-Harmonix Pulsar, Mu-Tron III, Lovetone Meatball, Wolly Mammoth.

Mods: Small Stone (Frankestone), Rat (Tri-diode switch plus resistors, caps and CI mod), Dunlop Cry Baby (Caps and resistors).
Location: London, U.K

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

User avatar
Camphausen
Information
Posts: 38
Joined: 20 May 2009, 21:35
Has thanked: 5 times

Post by Camphausen »


Post Reply