Not sure what opening main class means. I opened the UT2003 editor, then opened a .u file for a voice and I'm lost after that.
EDIT: just found out you need to uncheck "Placeable Classes only" in the show actor classes, so I did that and it looks like a voice pack at a good sound level as well as all have the same default properties. I go to the sound tab and mylevel with a particular voice .U file open and it shows all the sounds and some with [1,8,11025] after them and others [1,16,22050]; this must be bits and bit rate or something like that. For each individual sound it shows properties of base radius (2000), likelihood (1) and velocity scale (0) at those values. Although, these values are the same for voices that has a volume that is at a good level, so it's not looking good for a simple fix.
I did see this at Epic forums:
"That's a common problem. As far as I know, editing the volume within your soundpack.u file doesn't work. (Can anyone confirm / refute.) I had to re-record all of my taunts. Since you aren't cartman, here's one way (lots of work) to adjust the volume of your taunts: Open your soundpack.u in UEd. Export all the sounds to wav files. Also, find a built-in taunt or two and export them to wav files. With a sound editor (I use SoundForge) play the built-in taunt wav files. Note the volume level by listening or numerically (SoundForge has bar graph). Next, open your taunt wave files (one-by-one) and adjust the volume level to match that of the built-in taunt. Next, you have to re-import the modified wav files back to the soundpack.u file.."
Any ideas on this? I was just hoping to change something within the editor for each .U file and that's it. Not sure if I'm willing to do all that above stuff.
EDIT AGAIN: just decided to change the sound volume on one pack from 128 to 224 and see what happens, but I must not have saved the .U file correctly because now any bot set to that voice goes to the default voices. What the...?