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PROAC D48R Bass Booming

Dear all,  I have just bought a pair of preowned Proac D48R speakers.  I really love these speakers very much.  But the only problem is Bass-boom and because of that, some tracks are unlistenable.  My room is 17 L, 11 W and 10 W.  My source is Ayre CX7EMP and I'm having a Balanced Audio Technology VK3000 SE HYBRID INTEGRATED Amplifier.  Please let me know whether I can solve this problem.  I there any benefit,  if I change my amp and replace it with a Cary Audio SLI100 Tube Integrated amplifier.    Thanks in advance.
gnanasekhar
stani19's avatar
stani19
35 posts
 
I have the d40R (in my opinion better) and I ride them with the Accuphase M-8000 mono. I solved with (see photo my profile). Another excellent one was to use Gaia IsoAcoustics (they work great).

Stanislao
larryi
4,067 posts
 
gnanasekhar,

One more thing to consider--if the floor in your listening room is a suspended wooden floor, the floor could be acting as a giant sounding board which could be at least part of the problem.  With such flooring, the speaker should not be coupled to the floor (e.g., by using spiked cones), and instead, isolating footers or platforms should be used; you want something that will absorb/damp the bass energy that is shaking your speakers rather than coupling that energy to the floor.
milpai's avatar
milpai
2,412 posts
 
@gnanasekhar,
Are the speakers placed in front of the long or short wall?
Can you move them 24" from the side wall? Also Can you move them 50" from the front wall. Also try with the classic ProAc toe-in; which is to angle at the listening position with the "inner" side wall slightly visible from listening position. If that does not work, try to aim them straight ahead.
Looking at your profile, I think you have marble/til floors and thick concrete walls. So bass trapping in the corner will also help. The bass on these babies is certainly not "loose". It is super tight if the right.
The IsoAcoustic Gaia II will certainly help providing definition to the bass.Try to adjust the speaker position. The more you get it "into" the room, the less bass. Do your best before your decide to part away with this PHENOMENAL loudspeaker. Good luck!
gnanasekhar OP
48 posts
 
@milpai 
The speakers are placed in front of the longwall and are placed on Tile floor.  What about the Herbie products
bpoletti
1,553 posts
 
Another possible suggestion is to place the speakers asymmetrically in the room. Have one speaker places closer to the side wall than the other. One speaker closer to the back wall than the other. Move the listening position so that the speakers are equal distance from the listener and the listener is facing between the speakers.

The logic behind this is to not place the speakers in a position to reinforce the bass by interacting with each other.

I personally use a set up similar to what I have described including the use of five large leafy artificial plants behind the speakers. It took the bloom / boom right out of the room. Tone balance, timing, dynamics, imaging and detail is now superb.
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