[ringtheorist]

I'm building a balanced preamplifier similar to the one on the website of Nelson Pass. However, the input select will be switching between balanced sources. I'm not about to buy two stereo input select switches because they're awfully expensive.

One of the DIY'ers building the pre-amp mentioned constructing an input-select using just a single-sided PCB and some relays. Do any of you know how this could be done to allow each input to switch four signals? (Preferably with 4 or 5 total inputs).

b

 

[rickcr42]

Here ya go

http://www.diymania.net/pass/project...lay-schem2.jpg

http://www.diymania.net/pass/project...lay-schem1.jpg

http://www.diymania.net/pass/project...relay-in-a.jpg

http://www.diymania.net/pass/project...relay-in-b.jpg

http://www.diymania.net/pass/project/passpre.htm

enjoy

pssst,if you use the AudioXpress banced zen line stage pc boards,check this out

http://www.diymania.net/pass/project.../pass-wire.gif

 

[ringtheorist]

Cool. Thanks a bunch. I saw the beautifully designed case by the diymania guys, but never really ventured into the depths of their sites because of the language barrier

b