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Lots of bass at walls, lack of bass in center of room/listening position

I guess this is relatively common in listening system. Is there any way to smooth this out so I get more bass energy at my listening position? This happens with our without my 2x 18 inch subs. Room is 12 x 16 x 8 ft, speakers 4.5 ft apart on long axis and I am sitting 4.5 feet away. I tried moving back and forward but the entire middle center of the room except near the walls has decreased bass.
Is this a boundary effect or could it be due to bass cancellation effects?
smodtactical
dznutz
146 posts
 
Clearly you have not chosen the right speakers for your room.  The NS5000 are WAY too big.  Adding subs to that room is insane.

Best solution... get a bigger room.

Second best... get rid of those subs and speakers and choose the right monitors for your room.
daledeee1's avatar
daledeee1
638 posts
 
The best success I have had is using the Vandersteen speaker placement calculations for the main speakers.  This is available on their website.  I have two subs.  I have 11 acoustic panels, diffusers and traps.  I can walk around my room and the music sounds good.  It was not that way at all previously.  Several peaks and nulls. Good luck. 
gosta's avatar
gosta
839 posts
 
+1 dznutz
...or as I suggested apply professional digital correction.
smodtactical OP
986 posts
 
Thanks guys. Will look into treatment and DSP.
I do plan to move to a bigger space in 2-3 years so thats why I have the NS5000. But I agree totally a smaller speaker might be better. Although not sure it would be better for bass impact?
erik_squires
16,898 posts
 
AHA !!!

If these are the original NS 5000 I strongly suggest you get Troel's crossover upgrades:

Everything I was complaining about in your measurements (except for the choppy HF) is fixed here.


http://www.troelsgravesen.dk/Yamaha-NS1000.htm


Otherwise, DSP is a necessary option.  If you don't want to do the EQ yourself, Anthem makes a pre and integrated that will do it for you and integrate your sub.



Best,

E
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