Emma - PisdiYAUwot?

doctord02 · Post by **doctord02** » 03 Dec 2010, 21:05

Perhaps it a SMD equavelent instead of DIP? The TSSOP-14?

guiddruid · Post by **guiddruid** » 03 Dec 2010, 22:04

Not impossible, I guess, but i would be surprised if anyone was manufacturing transistor arrays of any sort in an SMD package. More likely to just be a bunch of sot23 parts.

HEAD · Post by **HEAD** » 03 Dec 2010, 22:29

doctord02 wrote:By the way, I have a guess... I think it's using cascaded jfets in a DIP-14 package, like a TL084CN quad JFET... so maybe two cascaded jfets, then a different distortion circuit and then two more cascaded jfets...

I'm gonna try and extract a still frame or two from the video of Jan Behncke assembling one... I can see a quick glimpse of a large DIP ic package in the center with several SMD components around it, and I can see the top of a cylindrical package sticking thru the goop... Does any one else recognize that in my top side photo? it looks like it's marked:

i9
100
165

Umm, I think you're somekind of dead wrong. I highly doubt that they use the JFETs of a regular opa. I think it's more likely that they use a smd CD4069 inverter IC as they do in ther reezafratzitz. Soniclywise this would also be my first guess that the took their reeza and put it somekind further.

doctord02 · Post by **doctord02** » 03 Dec 2010, 22:54

Could well be, I havent looked at the Reeza. Pure conjecture on my part...

DDD · Post by **DDD** » 04 Dec 2010, 12:06

doctord02 wrote:Could well be, I havent looked at the Reeza.

Taking into account their success with Reeza one can guess they've made some great pre-distortion voicing and EQ mods to it.

HEAD · Post by **HEAD** » 31 Jan 2011, 11:41

DDD wrote:
doctord02 wrote:Could well be, I havent looked at the Reeza.
Taking into account their success with Reeza one can guess they've made some great pre-distortion voicing and EQ mods to it.

Yeah, that came also to my mind. I used to push my Reeza clone with a TS style circuit in front of it which worked out great even though I just had a single tone controll. Maybe developing something similar to the Pisd based up on what we know about the Reeza would be a nice forum project. But I guess the man who comes up with that idea first has also to do the first steps...

roseblood11 · Post by **roseblood11** » 01 Feb 2011, 14:21

What would happen if one used a small saw to cut the goop around the edges of the pcb?

caspercody · Post by **caspercody** » 25 Mar 2011, 20:53

Chrismettal · Post by **Chrismettal** » 24 Apr 2011, 20:37

May i Bump this and ask if there is a shematic out ?

roseblood11 · Post by **roseblood11** » 24 Apr 2011, 22:51

Buy a pedal and send it to one of the degooping experts...

Chrismettal · Post by **Chrismettal** » 25 Apr 2011, 10:06

hm.. bad idea

HEAD · Post by **HEAD** » 25 Apr 2011, 10:13

Chrismettal wrote:hm.. bad idea

No, the only good idea. Better than recognizing that no progress has been made in this case but refractorily bumping everything about Emma just because you've read something about on an other forum. In my opinion THAT is a bad idea.

HEAD · Post by **HEAD** » 25 Apr 2011, 10:15

HEAD wrote:
Chrismettal wrote:hm.. bad idea
No, the only good idea. Better than recognizing that no progress has been made in this case but refractorily bumping everything about Emma just because you've read something about on an other forum. In my opinion THAT is a bad idea.

Go on buy one, send to some of the experts here and let it be dissected. Probably a pretty hard job since the goop Emma uses is pretty tough and they're obviously using smd parts an caps in this pedal which have to be sometimes desoldered to measure them.

Whoismarykelly · Post by **Whoismarykelly** » 25 Apr 2011, 15:34

Take the Reeza schem and set the bias control fixed at max. That keeps everything tight and punchy. Then yank the tone stack and drop a Guvnor stack in its place. That would proably get you workably close. The Pisdi is really just a more aggressive version of the reeza to my ears and the addition of the mid control really makes the difference in aggression. I think they chopped a bit too much bass early in the circuiot though. There is a sort of fatiguing high end that you dont immediately notice on the pisdi. Perhaps some slightly filtering would help right at the output.

roseblood11 · Post by **roseblood11** » 25 Apr 2011, 17:51

Maybe the tonestack of the Okko Dominator would be even more interesting.

Whoismarykelly · Post by **Whoismarykelly** » 25 Apr 2011, 18:38

Any sort of three-band EQ would work. Just look for the least lossy design and tweak the cap and slope values to taste.

HEAD · Post by **HEAD** » 26 Apr 2011, 06:17

I would assume that there's something like a boost stage with a bass cut and mid boost in front of the cmos inverters (if they used them too in this design) as this tend to sound less muddy and is less prone to be noisy. I'm able to get some similar brutal sounds out of a reeza clone with a simply ts in front of it, though it's a bit different.

caspercody · Post by **caspercody** » 15 Jul 2011, 13:32

Bump, on schematic?

roseblood11 · Post by **roseblood11** » 15 Jul 2011, 13:37

Buy a pedal and fight with the goop...
Or have a look at the Mad Professor Stone Grey Distortion!
Since I retraced that, I don´t need the Pisdifuckwhat? anymore

Saruman_ · Post by **Saruman_** » 16 Jul 2011, 10:03

If you have a device, why you have not degoop? For example degooping of Dominator took me about 40 minutes.
Why waste time?