Relating that feature to a receiver, I should look for high pass filter in the specs?
And I should also look for the ability to set speaker crossovers in varying frequencies and "small" or "large" settings so as to send LFE only to the sub right, or would that be redundant?
One last thing, how important is receiver wattage, would 30 watts-per-channel, measured from 20Hz to 20kHz, 2-channels driven, 8 ohms, .09% THD be okay for small room?