I'm glad you too are enjoying your 950. I think you might want to reconsider leaving all of your speakers at "large": See these threads: link link2 But basically, your sub can respond to lower frequencies than can the rest of your speakers. By setting the speakers to "small" you can redirect sound from below the crossover freqency to the sub. It might not make a big difference, but it's worth experimenting with. And remember, setting your speakers to small isn't a slight against them or your manhood :p

Frequency response of your speakers
DM604 S3 39Hz - 22kHz ± 3dB
LCR600 S3 60Hz - 22kHz ± 3dB
DM302 72Hz - 22kHz ± 3dB
Depending on how you have tuned your HSU VTF-3 MK2 Sub, it responds down to 18Hz and 25Hz