I've recorded a handful of shows using this setup (Church omnis --> Church ST-9000 preamp line-in --> Sony RH-10 hi-md), and they all ended up with the vocals too soft. The words were easy to understand while I was in the theatre, but I found myself straining to understand the recording at times. I had the preamp switch set to +30 gain. The audio level knob was also set to max (I'm really not sure what the knob does so perhaps herein lies the problem. It seems to adjust the gain, but considering there's a switch for that already, I'm probably wrong. The recording never clipped though so I figure I couldn't have been too far off with the settings.)
I recorded one show without the preamp and the vocals are very prominent. Unfortunately, I set mic sensitivity to high so there is a lot of clipping. However, I think I can still conclude that the preamp is causing the vocals to be overshadowed by the instruments. Basically, my question is how should I set the preamp to make the vocals more prominent in future recordings? Also, what can I do with the recordings I already made in order to make the vocals louder? I tried using the Dynamic Processing Effect in Adobe Audition, but I couldn't get that to help.
Here are clips from a couple recordings:
http://www.megaupload.com/?d=84JNJIZ7 - recorded with preamp. I sat right next to the speakers. mp3 file
http://www.megaupload.com/?d=KOOSHDIE - wav file. same clip as above.
http://www.megaupload.com/?d=09AC6JK4 - no preamp.
I don't know if this will make a difference in the recommendations, but I should probably add that I only tape Broadway shows and orchestral performances.
Thanks.