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Re: Emma Electronic Discombobulator

PostPosted: 12 May 2013, 20:26
by Mbas974
Wow, looks not really hard to build... :-)

but, what are the boxes called "1" (INV_XX).
I image it's a sort of logic port.

Any idea what could be the chip involved ?

Emma Discumbobulator V2

PostPosted: 17 Nov 2017, 23:11
by roseblood11
I just realized that there is a second version of this pedal, and I hope we'll get this traced.
The first version was based on the MXR envelope filter, with some mods, maybe with additional buffer(s). Clones of the MXR that had the mods described on tonepad sounded more or less identical.
https://m.youtube.com/watch?v=40cPxO1AzWQ
http://www.emmaelectronic.com/discumbobulator/

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 18 Nov 2017, 18:16
by modman
I merged all Emma - DiscumBOBulator post into one thread because all the schematics have dissapeared as well as all gutshots.
Please use the attachment function to preserve shit for posterity! thanks

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 18 Nov 2017, 21:47
by POTL
Image

not verified!

Image

Image

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 26 Apr 2018, 20:17
by rs
Here are some guts i've found a while ago.
I'm still trying to figure this one out.

Cheers.

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 13 May 2018, 23:35
by chicago_mike
For the input and output caps in the Emma, I just used .022 Panasonics. sounds fine!

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 15 May 2018, 08:20
by rs
Hi Mike, wich schematic did you use? Im getting strange noises. Have to check it latter. Thanks.

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 23 Sep 2018, 02:07
by roseblood11

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 14 Sep 2019, 01:54
by roseblood11
Just ordered version 2. I will post photos and schematic next week

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 17 Sep 2019, 17:39
by roseblood11
Version 2 is all smd.
As my wife is in hospital, I won't have time to do the tracing myself but I will take some macro shots.
The pedal doesn't sound better than the old version, but it might have more headroom, as it can be used with bass or power humbuckers without any distortion.
The clean boost is a useful addition, but there should be an option to change its position in the signal path: Often, it would be more useful, if the boost was directly behind the output of the wah circuit, so that the wah's bypass switch would switch both effects at the same time.

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 29 Sep 2019, 17:46
by roseblood11
Hi Res pictures...
https://www.dropbox.com/s/7nuueym110d86v2/emma.zip?dl=0

Unfortunately, I won't have time to draw the schematic. Maybe someone else will do that?

What more is needed?

Re: Emma - DB-1 ( DiscumBOBulator )

PostPosted: 29 Sep 2019, 21:23
by roseblood11
This is a bigger version of Bernard D'Uurs scheamtic of the old version DB-1.

Maybe it's helpful...


Any ideas on how to get the values of those smd capacitors? They aren't labeled...

Re: Emma - DB-1 DB-2 DiscumBOBulator

PostPosted: 02 Oct 2019, 14:12
by roseblood11
I had to return the pedal today.
But the pictures should be all that is needed to draw a schematic.