My school has a 16 channel Spirit 8. Today while I was running some mic cables for the talent show tomorrow I was playing the soundtrack to Wicked. I got to the end, and heard 2 vocal lines not come over the sound system. I investigated. Now, before I go on, I should explain my school's odd sound system. The main out of the spirit board is going in as 2 mic inputs to a powered Peavey board, since we do not have any amps. The main out of that is running around the gym, right next to all of the lighting power cables, and to the speakers. Yes, we have horrible hum. Yes, I am working to get a snake to go under our gym, and yes I am working on getting amps, but for now, it works. Anyway, back to the problem. I was listening to these lines, and was really confused that I didn't hear these two lines. These lines are high in the vocal range, so I assumed that going through the lines it lost the signal, or that the EQ was set incorrectly. I went into the booth and checked the settings of the sound board. On the Spirit 8 there is a button that you can push to run through the EQ or not, the button was up, so the sound was not running through the boards EQ. I then checked through the headphones, checking whatever is coming out of the spirit 8 board. I did not hear the lines. I tried the same thing in a different channel, and yet again, did not hear the lines. Does anyone have any idea what could cause this, and why the soundboard does not want to use these sounds? The sound is inputing from my iPod, and I hooked up the headphones directly to the iPod, and it worked fine, so I know it is somewhere in the board. For those with the Wicked soundtrack, it is "Thank Goodness", starting at about 3:27 minutes in, according to iTunes.