My current set up is a 5.1.4 using 2 HSU VTF 1 MKII subs. Bowers and Wilkins 603's for the main 3 front speakers. AVR is a Marantz SR7013. Movies sound great in Dolby Atmos and in IMAX DTS, however sometimes the sub will "bottom" out. Music in 2 channel is good but the bass is very weak it's as most all of it is coming from the mains. I've considered getting a 12" SVS sub and an Emotiva BasX A3 to help drive the main 3 fronts. I've spoken with Peter at HSU a couple times in the past and he is really great and has given me tons of advice. I'm thinking the subs are too small from my medium size HT setup combined with an open floor plan that leads into the dining area. Any ideas what I could do to help with my current set up? I looked just last night at getting wireless subwoofer adapters and place both subs in opposite corners of the room and see if that would help.