Gsal Posted April 11 Share Posted April 11 I know that this subject has been discussed ad nauseam but please bear with me as I believe my situation involves a slight twist. I own a pair of Quatro CT Wood's and my listening room is above my garage on a "floating floor". The speakers were installed by my dealer and the bass equalization painstakingly set using a calibrated microphone, Vandertones and additional frequency sweep tests. I am reluctant to make any changes as the low end has been tuned to my room as it is. Nonetheless, I would like to address the vibrations and speaker movement that I am certain are a result of the wobbly floor and thereby reduce IM distortion. In the past I used granite bases under my Treos but the larger footprint of the Quatros precluded my using the granite I had on hand. I guess the question is whether or not placing granite under the Quatros or some other isolation material ( I use elsewhere and am fond of the EVP Equipment Vibration Protectors created by Norm Varney at A/V Room Services) will alter the low end response and require re-calibration of the equalization? My thinking is that since the Quatros were dialed in without anything between them and my floor perhaps there was a naturally occurring bass hump (s) at some floor resonance frequency that was detected and compensated for by my installer when he performed the equalization. Simply isolating the speakers from the floor after the fact could then result in a bass suck out at that (those) frequencies. I am really not up for recalibration of the low end but if the improvement is warranted then I may have to consider it. RV is you are available to comment I'd really appreciate it. Thanks in advance to all. 1 Link to comment Share on other sites More sharing options...
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