Not familiar with the 300ASC but I think this is the key (from p.26):
You simply connect the three "signal sense" connections in parallel with your three input connections. This assumes a balanced input though, for SE input you need to connect the "signal sense -" to "signal sense gnd" (see p.25).
If you just want SE input (and no balanced input) you just use the + input and tie GND and the cold (-) balanced input together on the RCA. If you want both connections wired (but not used at the same time), wire the RCA between + and G on the XLR and then have a small switch to tie - to G when the RCA input is used.
Hope this makes sense - I probably should have made a drawing 😀
/U.
You simply connect the three "signal sense" connections in parallel with your three input connections. This assumes a balanced input though, for SE input you need to connect the "signal sense -" to "signal sense gnd" (see p.25).
If you just want SE input (and no balanced input) you just use the + input and tie GND and the cold (-) balanced input together on the RCA. If you want both connections wired (but not used at the same time), wire the RCA between + and G on the XLR and then have a small switch to tie - to G when the RCA input is used.
Hope this makes sense - I probably should have made a drawing 😀
/U.
I'll give these a try today. Thanks. I just did not want to futz things up and let out the little white smoke.
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