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Old February 15th, 2015, 11:24 AM
effdbee effdbee is offline
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Pluggng ports of an HC1_MK2?

Will it hurt/damage anything to plug the ports? My center is a little boomy since it has to sit close to the wall. Setting the crossover from 80 to 90 seems to help but I want to experiment. Or would behind wall-acoustics treatment of some kind be better? Love my 11.3 Hsu speakers driven by a new Onkyo 1030.
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Old February 15th, 2015, 10:16 PM
SME SME is offline
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It should be no problem. I currently have my HC-1 ports plugged to work around similar problems. I was able to reduce my center channel output by 6-9 dB between 50-120 Hz, which was exactly what I needed to keep them from over-powering my MBMs. For reference, my center speaker is placed with woofers at 2 feet from the back wall. I'm running my crossover at 120 Hz right now and no one notices the localization except me, and anyway, it's not really better with the crossover set to 80 Hz.

Acoustic treatments can definitely help with booming, but you will likely see greater benefit by treating more than just the wall behind the center channel. The subject of room treatment is fairly complicated. While it may not do much to reduce booming, a panel behind the center speaker may help the sound in other respects such as imaging and frequency response > 150 Hz (rough figure, depending on how close the speaker is to the wall). Don't bother with anything less than 2" thick. In fact, I would recommend going with at least 4" thick material and installing it with a small air gap (e.g., 2") if possible. If your room is untreated it is likely causing the other speakers to boom also. Installing several thick panels (or bass traps) in strategic locations like the room corners can make a tremendous difference.

Last edited by SME : February 15th, 2015 at 10:37 PM.
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