I'm looking at getting two Mackie SRM450's for my basement and run them from a HTPC using a Revo7.1. Do you guys think for a 25x30 basement the 450 will do the job? Mainly techno, dance, and house music occasional punk when my friend bands plays. Do you think I need an additional sub? I auditioned them today at a local music store and they are loud but really couldnt test the bottom end very much.