EHX - Attack Decay (I Need your Help!)

StephenGiles · December 03, 2010, 02:07:27 PM

Quote from: Scruffie on December 03, 2010, 12:32:11 PM
Quote from: StephenGiles on December 03, 2010, 12:25:31 PM
It looks like 500mv pk so it could mean 500mv peak to peak.
Ah yes, that's what that'll be, but above the 3007, there's an arrow going down to Pin 5 of the 3007, the note looks like it says '5' something.

I can't make out anything other than the 5.

Skruffyhound · December 04, 2010, 10:42:43 AM

Hi, I'm just subscribing so I can follow this one

Scruffie · December 04, 2010, 12:19:26 PM

Right... well I think I have everything worked out in my head for now, so hopefully over christmas i'll buy some more breadboards and verify the schematic, I should have all the parts to hand I think, other than the correct transistors, but i'll just use whatevers to hand.

Rob Strand · December 05, 2010, 05:18:35 AM

If you PM me with an email address I can send a redrawn schematic.

Francisco Pena (tone pad) and I went over this some time back.

Scruffie · December 27, 2010, 09:38:27 AM

I didn't have the cash for more breadboards...

However! I do have this which i've half arsed filled in the PCB traces, I think i've pretty much verified the schematic with it, everything seemed to connect up as it should (there are a few traces i'm unsure of) Overlay Soon.

Merry Christmas!

Scruffie · December 27, 2010, 05:18:56 PM

And here's my current overlay interpretation

Not Pretty but it's a start!

Scruffie · December 28, 2010, 03:47:30 PM

Okay, someone beat me to it, on the other forum there is now a PCB layout for this

lars-musik · February 10, 2014, 06:15:54 PM

Hi there,

I am desperately trying to get this effect to work but without success by now.

After copying the schematic re-draw by armdnrdy at fsb (http://www.freestompboxes.org/viewtopic.php?f=1&t=2116&hilit=attack+decay&sid=bd5f15c220c0d68e28b2fc1cd99974e7&start=40#p172640) and layouting my first unsuccessful pcb I compared that one to the old EHX schematic floating around in the net. My second try (based on the board shown at fsb) also went happily distorting along, so now I would really like to get a hold of a verified schematic I can rely on. It seems like Scruffie and Stephen did get something there.

Unfortunately all pictured have gone missing in the www.

Has anybody saved them and could upload them again? That would be fantastic.

News:

EHX - Attack Decay (I Need your Help!)