MXR - Envelope Filter (1978) guts

Discussion regarding early stompbox technology: 1960-1975 Please keep discussion focused and contribute what info you have...

MXR - Envelope Filter (1978) guts

Postby modman » 03 Jan 2008, 13:43

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...

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Re: MXR - Envelope Filter (1978) guts

Postby puppiesonacid » 24 Apr 2008, 21:39

is the dod 440 just a copy of the mxr?
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Re: MXR - Envelope Filter (1978) guts

Postby analogguru » 24 Apr 2008, 23:04

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

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Re: MXR - Envelope Filter (1978) guts

Postby puppiesonacid » 24 Apr 2008, 23:31

cool, thanks AG.
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Re: MXR - Envelope Filter (1978) guts

Postby jreeves47 » 12 Nov 2016, 01:41

1978 pot codes
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