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In Reply to: RE: Out board Vibration Effecting Phono Cartridge posted by AudioSoul on February 06, 2016 at 21:12:38
A good general practice is to map out the nodes in your room, this is where bass is additive or subtractive. Then you try to place your turntable in an area where the node is subtractive (or tune your system such that a subtractive nose lands near your turntable). By all means validate that your turntable isn't sitting in an additive node. At that point you don't have enough musical energy present to affect the cartridge.
How to measure your room? I have a rig from XTZ (mic and software) that makes this very easy. However I suspect you could do the same with a test album and a smart phone - someone who has done this may chime in.
If you've never even thought of attempting this then shame on you for not working on your listening area, it is the second biggest game changer for the sound that reaches your ears (your speakers being the first biggest influence on what reaches your ears).
Sharing my experience and findings, not trying to tell people how to enjoy their audio (a.k.a. no grenades please).
Follow Ups:
A few times now I've suggested moving a turntable/arm away from a corner location where there will most likely be bass buildup. And I speak from experience. ;^)
"You can't know what the "best" is unless you have heard everything, and keep in mind that given individual tastes, there really isn't any such thing." HP
Edits: 02/08/16
For me it was under the cathedral ceiling apex along the front wall. My TD 125 w/balsa wood Rabco SL 8E was just three feet from the left speaker a six foot monsters that are three db down at 27. Not a peep of feedback. Solid floor too, I could bang my foot down and no driver movement.
ET
with some form of air bladder arrangement such as the microscope platforms or the opposed magnet type that eliminate solid contact of the tt/arm/cart setup to the earth is the best.
i can't remember the brands of the platforms but those are the best. with my SOTA Sapphire tt, i have no prob as the hanging springs do the job nicely, no platform.
...regards...tr
I think (could be wrong) that these guys are talking about airborne vibration via extreme low bass excitation. Platforms cannot eliminate that sort of feedback, at least not entirely.
Structure borne vibrations VS air borne, so different solutions are needed.
"You can't know what the "best" is unless you have heard everything, and keep in mind that given individual tastes, there really isn't any such thing." HP
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