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Help identify this Dynacomp circuit

TimH

Silver Supporting Member
Messages
6,169
Can anyone tell me if this is the script logo circuit?

 
Messages
2,191
I don't think they changed the circuit. The opamp on the early ones was a different casing, but the same circuit as far as I know. Do you have examples of different schematics for the script vs the block logo?
 

TimH

Silver Supporting Member
Messages
6,169
no I don't. I just know this is a late 70's or early 80's block logo...some of the early blocks are the same as the scripts but I'm not sure where the change happened or how to tell the difference. I'm hoping someone on here can help.
 

hurleysurf

Member
Messages
452
I think that is the script logo circuit. I think the block logo has two resistors jumpered across most of the board. But I could have it backwards. Someone please conrrect me if I'm wrong.
 

Cybercat

Member
Messages
301
Hi Tim,
Looks quite similar to mine : -



Got this one offer Mike Pierra (a.k.a. Analogman) about 11 or 12 years ago, & it already looked very old and beaten up then. It may have mods other than the 3P/3T switching as I recall him telling me something about it having been his working prototype (for what I guess later became the "DynaRoss"?), & not sure if he returned everything to original afterwards.

Anyway, it sounds stellar! Better than an early block logo I had, & even the original script I owned back in the 70s.

How does yours sound?

 

TimH

Silver Supporting Member
Messages
6,169
Hi Tim,
Looks quite similar to mine : -

Got this one offer Mike Pierra (a.k.a. Analogman) about 11 or 12 years ago, & it already looked very old and beaten up then. It may have mods other than the 3P/3T switching as I recall him telling me something about it having been his working prototype (for what I guess later became the "DynaRoss"?), & not sure if he returned everything to original afterwards.

Anyway, it sounds stellar! Better than an early block logo I had, & even the original script I owned back in the 70s.

How does yours sound?
And yours is a script logo pedal?
 

Cybercat

Member
Messages
301
And yours is a script logo pedal?
Erm, yes and no!
-- the top part of the casing is from a very early "block logo" (the bottom part was a different colour, off another pedal), but the board was supposed to be script logo - Though as I said above, I understand this had been used for experimentation, and some components may not have been put back to original.

Sorry for any confusion!
 

Z-Rider

Member
Messages
171
This thread got me curious, so I opened mine today and took these pics.
The block logo is a '78, the script a '76 according to the pot codes. Notice the script board with the 'r', 'c', 'd' and 'ic' markings.
There's no sound difference between the two and I use the block all the time for years, as can be seen.





Z.
 




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