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RE: Floor vibration vs. Airborne sound

Posted by beach cruiser (A) on June 21, 2017 at 04:22:52

In Reply to: RE: Floor vibration vs. Airborne sound posted by mr.bear on June 20, 2017 at 12:01:59:

Thanks for the reply.

I once used the nuclear opinion you mentioned, speakers in front room, turntable and amp in another. Not super handy, but the kenwood table I used at the time would howl at the sound levels some enjoyed, so a solution was found. It had a resin mixed with stone powder base, but the suspension was up to you. It was replaced, and easily bettered.

I don't have the technical chops to do a lot of productive explorations, unless you want to count on random experiments and dumb luck for your results. So I play follow the leader, reading and selecting methods that seem reasonable. Vibrations and waveform understandings are interesting to me.

I saw the slabs pictured, and thought I should mention I also had some , in case you had attempted to used them in turntable supports.

IN reading, folks say the material, marble, excites too easily, and since you are a guy with resonant frequency equations easily at hand, I figured you might have a successful way to use them . I suppose I could weigh them and figure with the math you provided. PRobably won't happen , the spring deflection would be hard to control, for a DIY result that wouldn't need a lab coat and tongs to play a record.

I once read a story by an audio reviewer, who, in seeking a quit place to listen to music, thought he had found the answer. An old english cottage built over a giant rock, the exposed portion was exploited to use as ledge and hearthstone for the fireplace. He figured the buried rock was at least fifty tons , probably more. The perfect mass isolation platform for his turntable. All he was looking for was a quiet electrical situation out in the country, and figured he got really lucky. Until he bought the place and found that a local rock quarry used the country road, but only at night, so people aren't troubled. The big rock picked up the rumble from the road a mlle and a half away and microphoned it right into his turntable. The guy didn't have many options, this was back in the fifties, hi fi was new, he was building the hobby. .

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Kimber Kable

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