behringer mixingdesk modification.

[Byron G. Jacquot]

>This desk (behringer eurorack ms802a) does not have a pre/post switch!
>On the print I did find marked spots, so my guess is that a switch was
>inteneded but was left out for productioncosts or so. The blockschematic
>als suggests this modification is possible/intended.
>But before I start drilling holes in my new desk, does anyone out there
>*knows* anything about this modification?

I don't know about the Behringer, but there's a certain American company
with designs that ware remarkably similar to them.  The auxes came
pre-configured for just post-fader use, IIRC.  But there were some well
documented mods for the boards where you cut a trace, then soldered a little
bit of wire between two pads to change the configuration.  I've got their
service note for that mod around here somewhere...about a page of documents,
mostly pictures explaining how to cut traces.

If you look at how those three pads are linked, you'll notice that a SPDT
toggle switch will do the same switching.  It'll take come careful work to
put a corresponding hole in the chassis, but it's otherwise straight forward.

I did the wire-jumper version to one of the american boards...be sure you
test that the mod is working before you put all of the stupid knobs back on!
If you're a little nervous about doing the mod with a toggle switch, just
give it a try on a single channel with the wire jumper first.  If it doesn't
do what you desire, simply replace the trace you cut.

Byron Jacquot