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In Reply to: Dipoles + Small Room. can you treat behind speaker... posted by earnrg on March 27, 2006 at 07:40:38:
You can but you have to carefully adjust the amount and positioning since the overall sound of the dipoles depends on that rear reflection back into the listening area. If you put absorbtion materials behind them, you do not want to change the tonal balance of the reflection too much. I'd go about it incrementally with multiple small panels added one at a time.Kal
P.S.: I did this with a pair of Apogees and found it all too easy to put a blanket (figuratively) on their sound.
Follow Ups:
And what is your recommendation for compensating for the resulting change in tonal balance?
All the panels I tried changed the tonal balance. In other words, it is a trade-off between solidity of imaging and tonal balance. What I was trying to say is that you should add absorbtion only to the point where the trade-off becomes objectionable.
what amount of space you could move the speaker closer to the wall?
I used Sonex panels which helped but ended up with heavy velvet drapes which were interlined with Dacron batting. The advantage here was that I could easily adjust the amount of exposure by opening/closing the drapes. Since I wanted to keep the center of the rear wall relatively undamped for center imaging, the drapes were a good solution.BTW, the Apogees were about 4 feet from the rear wall.
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