[Tom McCreadie]

OK I am done for the time being, and I got sound out of the speakers now,
but still have a problem at the headphones. The main culprit was a Y cord
out of the sound card that was used to split the signal to two different
speaker/amp aystems. I didn't think that would be a problem when I did it,
but apparently the Y cord is causing some grounding or phase reversal error,
so I de-commissioned one set of speakers and now I have speaker sound but
not headphone output.

Still some questions: Exactly what kind of "Y cord" were you using to come out
of your computer sound card?

Was it a 'splitter'. where its (1/4"or 1/8") trs phone plug splits out the
signal into unbalanced Left channel (from tip & sleeve) and Right channel (from
ring & sleeve), these unbalanced signals getting passed along via rca, or
1/4"mono (ts) plugs or 1/8" mono (ts) miniplugs?

Or was it actually a 'duplicator', where the stereol trs signal is converted
into _two_ stereol trs signals, probably with contraplug termination? What's
the input connector type on the Logitec amp/speaker?

And was this the same Y cord used at the recording location? . That may have
been inappropriate for the soundboard, which could have been outputting a
balanced mono vocal signal (tip +ve, ring -ve, sleeve ground).
--
Tom McCreadie

Live at The London Palindrome - ABBA