Hey folks,
I had a video that we played on the church projection PC this weekend and the voices were gone but the music was there (this was a video camera recording of people talking with music underneath).
The service before mine had no issues and the only difference was that in their mix file the playback submixer input did not have the mono switch engaged (this channel is fed from a submixer that carries all of our DVD, Tape, PC, etc sources to one stereo input).
We usually have it set to mono in our service for split track accompaniment tracks which have music on one channel and demo vocals on the other, so we pan the submixer to the music side and set the SAC channel to mono so it comes out both main speakers.
Later I did some testing and sure enough, having Mono engaged was the issue, as it caused the center-panned vocals to cancel out (and much of the music).
I tried all the varieties of Mono and everything worked backwards: both L+R options cancelled the vocals but L-R and L or R only worked fine.
(This was also a teaching experience in that we could have left split tracks panned center on the submixer and chosen the Mono option of L or R only and done the same thing...sigh).
Anyway, I was thinking this might be a wiring issue, although it's kinda hard to screw that up with plugging RCA output jacks into RCA input jacks on the submixer, and then using 1/4" TRS cables to plug the submixer outputs into the SAC MOTU 1/4" inputs.
Anyone know of a good way to test this wiring theory out other than pulling all the cables and continuity testing all tips to tips and rings to rings?
I'm also looking for any good audio files that might be available to test polarity of signals that I could also burn to a CD to check not only the PC input to the submixer, but also the 2 CD players and 2 DVD players.
Thanks,
Jeff