Ok Due to moving my sounds into a different room i now have the old "sub too big/Room too small" problem which results in crappy sounding bass. Is there anything at all i could do to compensate? I have a JBL 4645c sub with a Citronic PPX 900 amp runnin in mono mode and a 100 Hz low pass filter. can set the LPF to 50Hz if i want and i have a basic EQ with 25,40,63 and 100 Hz bands.