Retriever
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Everything posted by Retriever
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Opps resonance is in the 65 hz region! Lower freq is footstep.
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I wasn't planning on doing something that drastic!! However I was planning on picking up a basement pole at Home Depot or Lowes to put in the basement under the entertainment center. You should see the bumps in the freq plot when someone walks. I'm surprised the tone arm doesn't jump across the record! If I can figure out how to downsize the plots while maintaining readability I'd post them..
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I'm currently building a box to isolate the turntable. I work at a balance and vibration company, borrowed some equipment. I have a lot of bounce in my floor FFT graph shows low frequency resonance in the 40 to 30 hz region. Big bumps when someone walks in the room! As the house is trussed and no poles in the basement, covering a 48 x 25 area and an open floor plan, it acts like a trampoline. So I'm adding stiffening braces in the basement by the entertainment center. All goes well I should be solved this weekend.
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I'm not a total old fart, I also use DVDs with a Beringer USB device isolated and rip with LAME using insane preset 320kbs. It's just nice to pull out my old classics on vinly once on a while. Started constructing my dampening box for my turntable. I needed ideas of how to approach it, all the knowledgable people on this site gave me direction. Thank you!
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The turntable sets on a solid oak table, tracking force is 1.2 grams, I won't be able to supply a picture until I get home ( at work ). I'll try weighting the dust cover with books tonight.
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Lots of rumble even with the C1 filter engaged. I think it has something to do with the open floor plan, distance in the room is 33 feet. Which puts the wavelength in the 34 hz area.. Lots of flutter in the woofers. Both turntables behave exactly the same.
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Ok but my ceiling is 22 ft high might not be practical!
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Lots of good ideas, I'll start construction tonight!
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Ever since I built my trussed house back in 1991 I have never been able to listen to Lp's with any volume. I have 2 old turntables that work Technics, and a Pioneer. Both use B&O MMC3 cartridges. I have to record records on my old Nakamichi CR4 Cassete deck. Then I'm able to listen at higher levels. This also helps preserve my collection. Gee does that really date me.. What kind of isolation devices are availible? I've also tried long patch cords to get the turntable out of the room, but I find this rolls off the higher frequencies.
