Thanks for the suggestions. I'm going to work on it now. I did have the popping noise again listening to Blackhawk Down, so don't think it's the movie.
Alan - This was my first post on this topic. I'll let you know what I find.
Thanks!

David M60's, VP150, QS8's, Onkyo TX-SR805 HSU VTF3-MK3 Samsung HL-T6187S Oppo DV-981HD