Hi confused,
Where the woofer of a sub faces makes no difference at all so long as you have the crossover frequency set at about 80 Hz or perhaps a bit higher. Nor do the spikes or the feet make any difference in the radiated low-frequency energy. As JohnK pointed out, put the sub in a corner to start and then, if it's too boomy there, gradually move it away from the corner along one wall or the other.
Check out the A/V Tip of the Month that I wrote for the May2002 issue of Axiom's AudioFile newsletter. Just go to axiomaudio.com/archives and click on the May issue.
I also recommend you purchase the Sound&Vision magazine Home Theater Tune-Up DVD. It has excellent subwoofer test tones and easy to understand instructions to set up your satellite/sub balance and crossover as well as TV monitor calibration advice. Get the DVD at amazon.com or one of those sites.
Regards,
