bass problem

John Irvine · 21st July 2009, 05:28 PM

I have a problem with the bass being louder on one side of my room. My room is 15' X 16'. The ceiling is tapered from 8' to 10'. The corners of the front wall are on a 45 degree angle- 6 foot across. The room is set-up to be very soft with carpet on the floor, acoustical lay-in ceiling, and foam padding on all walls. I have tried everything I know to correct this problem. The woofers have been placed in all different positions and corners. I would appreciate any help.

Thanks, John

HiFiNutNut · 21st July 2009, 10:06 PM

Have you tried to model your room? The FRD site has a room modelling tool which I found to be very accurate. You can model one boundary at a time and see the effects then all boundaries.

gedlee · 22nd July 2009, 02:36 AM

First, do you have any measurements or is this just subjective? If it's subjective then I would suggest that it's a mode that is excited and is louder on that side of the room. Try using multiple subs, but better yet, get some measurements and then try multiple subs.

Inductor · 22nd July 2009, 08:21 AM

Do you think you have a problem of sympathy/reflection at the dominant frequency of the room, w/ceiling, and with the speakers ressonance? And is (it) louder on the higher side of it?
:reflection from ceiling, like in a concert hall

Elias · 22nd July 2009, 09:53 AM

Hello,

I suspect the problem comes from the room.

Have you tried dipole bass already?

- Elias

Quote:

Originally posted by John Irvine
I have a problem with the bass
...

trevamp · 22nd July 2009, 11:28 AM

You have uneven bass coverage it seems , due to multiple bass sources far apart. I suggest trying an experiment by placing all your bass radiating speakers close together at point I think this will improve matters. It would be best in any case to stick to single point sources siutably rolled off and on in the bass.

MaVo · 22nd July 2009, 02:17 PM

Five posts and five different ideas on how to solve the problem. If i were new here, i would be confused now.

As a rule of thump, you can assume that "gedlee is allways right".

gedlee · 22nd July 2009, 02:28 PM

MaVO - thanks for the vote of confidence! But this will certainly start a war!!

21st July 2009, 05:28 PM	#1
John Irvine diyAudio Member Join Date: Nov 2006	bass problem I have a problem with the bass being louder on one side of my room. My room is 15' X 16'. The ceiling is tapered from 8' to 10'. The corners of the front wall are on a 45 degree angle- 6 foot across. The room is set-up to be very soft with carpet on the floor, acoustical lay-in ceiling, and foam padding on all walls. I have tried everything I know to correct this problem. The woofers have been placed in all different positions and corners. I would appreciate any help. Thanks, John

22nd July 2009, 02:36 AM	#3
gedlee diyAudio Member Join Date: Dec 2004 Location: Novi, Michigan	First, do you have any measurements or is this just subjective? If it's subjective then I would suggest that it's a mode that is excited and is louder on that side of the room. Try using multiple subs, but better yet, get some measurements and then try multiple subs. __________________ Earl Geddes Gedlee Website Read about the highly acclaimed Geddes loudspeakers

22nd July 2009, 08:21 AM	#4
Inductor diyAudio Member Join Date: Feb 2006 Location: Cascais	Do you think you have a problem of sympathy/reflection at the dominant frequency of the room, w/ceiling, and with the speakers ressonance? And is (it) louder on the higher side of it? :reflection from ceiling, like in a concert hall __________________ What the Hell is this crap?! It's not crap, it's muzak.

22nd July 2009, 11:28 AM	#6
trevamp diyAudio Member Join Date: Jul 2009	Bass problems You have uneven bass coverage it seems , due to multiple bass sources far apart. I suggest trying an experiment by placing all your bass radiating speakers close together at point I think this will improve matters. It would be best in any case to stick to single point sources siutably rolled off and on in the bass.

22nd July 2009, 02:28 PM	#8
gedlee diyAudio Member Join Date: Dec 2004 Location: Novi, Michigan	MaVO - thanks for the vote of confidence! But this will certainly start a war!! __________________ Earl Geddes Gedlee Website Read about the highly acclaimed Geddes loudspeakers


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21st July 2009, 10:06 PM	#2
HiFiNutNut diyAudio Member Join Date: May 2004 Location: Sydney	Have you tried to model your room? The FRD site has a room modelling tool which I found to be very accurate. You can model one boundary at a time and see the effects then all boundaries.

22nd July 2009, 02:17 PM	#7
MaVo diyAudio Member Join Date: Jan 2006 Location: Herne	Five posts and five different ideas on how to solve the problem. If i were new here, i would be confused now. As a rule of thump, you can assume that "gedlee is allways right".

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