Do I need acoustic foam in my listening room?

If this is a dedicated room, almost like an audio studio, use foam. It works best. Other room treatments are compromises intended to look reasonably acceptable in a living room.

If you have any freedom to alter room dimensions this would do more good than any tratment. Talk to Rives.

Try to sit more than 3 feet from the back wall. 38% of room length is often the optimum position.

Of course acoustic treatment will help with sound - foam or anything else to absorb. Probably everyone could benefit form treatment in a domestic setting.....the problem is aesthetics and WAF, as heavy acoustic treatments look pretty ugly in most cases, unless you enjoy feeling like you are an extra on a Buck Rogers or Flash Gordon set!

Thanks for the tips.

Can anyone recommend a good foam product?

//jim

Lenrd bass traps from Auralex in the front corners will help tremendously in taming the megaphone effect from those areas of your room and will even out the reponse. Also I use the small 2 inch thick 1 foot sq panels on top of my bookcase where noone can see them and I think they help.

In my recording studio I cover about 30% of the walls with 2 inch thick 2 x 4 foot panels and this quiets the ping effect from drywall to a great degree. I am able to obtain good soundstaging while monitoring and that translates well to other playback systems and formats.