So far, in the past 30 days I have spent $650 on my modest home theater without causing any problems with my spouse. I am currently using a pair of Klipsch KG2s for my mains, a KV-2 for the center and a pair of Energy Connoisseur C-1's for my rears. My weak link is my sub, a Sony SAWM20. I know that if I spend any more money on speakers, my wife will definitely have a fit. Does anyone have any tweaks that I can use on my sub so I can get the best sound out of it?