Planar Speaker Asylum

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RE: You overdid it.

Posted by triamp on February 22, 2011 at 04:48:21:

My triamped MG 3.6's have to be placed too close to the back wall, my room is small. So I built foam wedge "panels" to place behind the speakers. If your rear wall is too close you will get what is called "comb filter" response at your listening position due to rapid arrivals of the reflection.
SoundLab sells a product like this to go behind their full range electrostats, called the Sallie. They are about $1,000 a pair.
The photos (above) show what I built, for $100 / pair. Bought the foam wedges from eBay.