a couple of things that can work quite well if you can't do the sub crawl and you don't want to sit in a null;

put the sub something like one third off the side wall at the front, and just a few inches away from the front wall. you should see an illustration of this if you check at the address below this message. i had to do this, and not the sub crawl, as i could not move the sub easily enough; my sub's frequency resp. is very flat and i cannot detect the changeover from front speakers to the sub. the integration is excellent.

next, have your LP (your ears) at around 38% (of the length of the room) from the back wall; or if you have a large room: from the front wall.

when done, carefully run your Audyssey or MCACC or whatever calibration program you have.

Last edited by J. B.; 04/08/12 11:00 PM.