B&W Nautilus 802 and bass-problems.

[xayide]

Hello,

I need help with a bass-response problem I have with my B&W Nautilus 802 speakers or rather the room they are in. I have made a planview drafting to clear things up a bit. In the green areas there are plentiful of bass in the blue low bass response and red dictates areas with almost no bass at all except extremely hard midbass. My rooms ceiling height is 2280mm. The room length and width is 5520mm by 4520mm.

Just the measurements reveal a flaw in design by standing waves and room modes. Since width is a multiple of the height, 4520/2280 = 2 times. What is even worse is that the 2012mm long window is submerged into the wall adding another 180mm which makes that problem to, ie 5520+180/2280mm = 2.5 times.

So what should I do? Change the room dimensions? The room got 2 coaches, one big carpet, wooden table and a projection screen. Is more furniture going to help or do I need to change the room dimensions by adding another wall onto existing walls? Maybe one really long bookcase to narrow the room could help? Acoustic ceiling maybe, will give about 100 mm more of height. Is cutting of all the corners going to help, not that I sense there is more bass in the corners than in the rest of the green areas? Could someone please give me some advice?

Drawing:

Comming later...to few posts.

 

[GranteedEV]

Get two nice subs and put them on the other side of the room.

 

[xayide]

Yeah that could do it. But what is generaly the real problem with room modes, unsolveable?

 

[AcuDefTechGuy]

Yeah that could do it. But what is generaly the real problem with room modes, unsolveable?

The problem is usually the speakers.

The 802D & 800D lack "real" bass performance, so you won't be able to fill the room evenly with bass.

Your only option outside of getting different speakers with great bass performance is to add subwoofers.

 

[ohskigod]

I was never a hhuge fan of those B&W, but they didnt seem bass shy when I listened to them. What amp are you powering them with?

unfortunately I can not see whatever chart you put together, but am I to assume there are areas where you can here bass, just not the sweet spot?

I have had serious room issues where speakers that have no business being bass shy were bass shy........but this was primarily in my basement, thus I have no rig in my basement anymore.