Welcome to the joys of audio in Adobe After Effects. It isn't the planet's first choice for manipulating audio. You can TRY to type in a value -- negative 150 instead of negative 48 -- but I don't know if it would work. You could run a test and see.
The reason I don't know: I've never tried to use AE for anything more than reference audio, and rarely using AE's Reverb effect on an adio clip. I fine AE's Reverb effect very easy to use. I don't even render audio out most of the time: just the videeo... and that's on lip-sync audio, too.
KGAN (CBS) & KFXA (Fox) Cedar Rapids, IA
Thanks for the response. Ya, I don't use its audio for much, but a simple fade on a piece of stock music shouldn't be too much to ask for.
I tried typing in the value like you suggested, and it actually worked. Was surprised; figured since it didn't slide any further it wouldn't let me. Cool to know.
I actually already fixed it though. I added the stereo mixer effect and brought the "left level" and "right level" down to 0%. Haha, pretty ghetto, but was just trying to do it quickly. I was going to edit it in audition but I actually dropped it in twice so it would have effected both layers. Didn't want to export it as a whole and blah de blah de blah.
PS You've helped me tons in the past with your countless responses to others queries :) Thanks!