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In the Forum: Audio Discussions
In the Thread: Romy The Cat's new Listening Room
Post Subject: Passive vs. Active flooring.Posted by Romy the Cat on: 4/20/2010
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Albert,
the Adjustable Hydraulic Dampening might be effective if the vibration of floor is the factor. This is exactly what I question as I do not feel that the floor vibration is a problem. Considering the length of the waves and the amplitude of the floor vibration I think Sound do not even “see” the fact that floor vibrates, of even if it sees it then the impact most likely negligible. What I think is more important in suspended floor is not the vibration but the mass-reflection. Somebody at this site reported that he used concrete panels under suspended floors and the result was positive. Still, it shall be a degree of “positiveness”. What I mean is the fact the any concert hall where a concrete slab was introduced made musicians to complain that Sound turned bad and they can’t hear each other. So, I presume that it needs to be a degree how much bouncing foundation sound might have to be interesting.
I do agree that the idea of “Active Flooring” that I proposed above is a promising, in fact I was proposed it before in the Real Estate thread. The “Active Flooring Channel” might not only address the problem with floor but fill the necessary ULF space of the house (at ULF the wooden floor is virtually transparent). I might use some pro sealed bass modules with 1kW-2kW amplification and 4th other at let say 25Hz. Or I can put a pair of my Fane 24” drivers with 150W-200W amp in the basement under the music room. Playing with crossover point and amplitude of the channel I think it might be possible to modulate many interesting results that would be not abatable with solid “passive” floor.
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