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MXR - Envelope Filter (1978) guts
Posted: 03 Jan 2008, 12:43
by modman
http://www.j-guitar.com/sp/sea/view_det ... 70697.html
Also to raise the question whether we want to consider this here or in the classic folder. Let me know your ideas...
modman
Re: MXR - Envelope Filter (1978) guts
Posted: 23 Apr 2008, 23:45
by super velcroboy
Re: MXR - Envelope Filter (1978) guts
Posted: 24 Apr 2008, 20:39
by puppiesonacid
is the dod 440 just a copy of the mxr?
Re: MXR - Envelope Filter (1978) guts
Posted: 24 Apr 2008, 22:04
by analogguru
The MXR used "switched capacitor" technology, while the DOD 440 was much simpler with a Dual LDR, as you can see here in the:
DOD 440 (red) schematic
analogguru
Re: MXR - Envelope Filter (1978) guts
Posted: 24 Apr 2008, 22:31
by puppiesonacid
cool, thanks AG.
Re: MXR - Envelope Filter (1978) guts
Posted: 12 Nov 2016, 00:41
by jreeves47
1978 pot codes
Re: MXR - Envelope Filter (1978) guts
Posted: 04 Aug 2017, 13:23
by alltrax
I built it some years ago using
Tonepads pcb it's a great EF, love it
Re: MXR - Envelope Filter (1978) guts
Posted: 12 Aug 2017, 18:06
by rs
I saw a gutshot of Emma's Discumbobulator, (i dont remenber where) but i remember that it was pretty similar to this.
Could it be a clone wiyh some tweaks?
Re: MXR - Envelope Filter (1978) guts
Posted: 23 Jul 2018, 20:16
by chicago_mike
The Emma is a clone with input and output transistors. I think in mine I used 2n222 and .02 input / output caps. Biased for no gain.
