Booming bass from my B&W Nautilus

If this is indeed caused by room interaction (most likely) you could try to narrow down the frequencies that are resonating. I have found the Stereophile Test CD or Test CD 2 useful for this purpose. These disks have test tones set a specific frequencies, allowing me to narrow down a resonance problem and immediately tell if a change in speaker placement has helped. It is quite obvious when you listen to the different test tones which one is causing the problem.

In my room with my current speaker placement I get a problem with the 40Hz tone. When I play music that has energy in this area, this part of the bass response is emphasized way out of proportion to the point that it is nearly unbearable to listen to some songs.

Hello,
If you are serious about fine tuning your speakers output in your room, I would re-read Stehno's post a couple times. Then you will have to put in a little work and possibly some dough. You can email me if you like as I have learned much after living with the N801's for several years.

I have the 803's

I give up on B&W....going to buy REVEL STUDIO instead..

Keep in mind the room furnishings themselves can cause acoustical problems.

Some time ago, I removed my leather sofa and installed a thick-cushioned cloth sofa in it's place and noticed an immediate improvement (firming up) in the bass/mid-bass regions.

-IMO