Also Double Bass does not roll off the lows to the mains when the speakers are set to large, they play full range(no crossover imposed on them) and everything below the crossover is sent to the sub, thus doubling the low bass output, so to speak.

Jason
M80 v2
VP160 v3
QS8 v2
PB13 Ultra
Denon 3808
Samsung 85" Q70