I have a problem with my audio levels. It seems that when I playback a recorded mono track, the audio levels (visually on the meters and audibly) are not the same as when I set them before recording. They are weaker on playback. Can anyone tell me what's going on?

FYI, I don't have any plugins on these tracks...they are dry.

I am currently running a MBox with Pro Tools LE 6.9.2 on Mac OS 10.4. Thanks!