Due to my room arrangement, a table comes in the way of my REL Q150E sub. I have therefore put the sub on top of some firm/sturdy furniture (ie an old subwoofer no longer in use) to get it above that obstructing table's level. It sounds/feels fine but I'm not sure if I'm missing anything. As people normally place their subs onthe floor, I wondered if there's a reson for subs to be placed on the floor rather than being raised on furniture. Will I be missing on some low notes by raising the sub, in case subs use the floor to reinforce the bass? Thanks.