Click title to read one, or click date to read all below it.
03-19-03
Adding any material to your tonearm cavities will significan ... Twl
03-19-03
Http://www.audioasylum.com/index.html go to audio asylum, c ... Elmuncy
03-19-03: Jyprez
As you suggested,I went back and read one of your threads on tonearm tweaks which discussed adding lead fishing weights protruding from the vertical axis. I am not an audio expert but I did study college physics enought to make me wonder that such a small weight attached so close to the axis could have a measureable effect. Did you actually calculate the change in resistance to angular momentum that would result from this to determine its significance? It seems to me that a much longer outrigger arm would be needed such as a rigid wire attached perpendicular to the arm with the weights at the end. Inertia would increase in proportion to distance of weight from the pivot point.
My question concerning sand in the arm, which you said was "out of the question" would also increase the inertia of the arm and with proper counter weighting, would be indistinguishable, in terms of the physics, from your outrigger,in the horizontal dimension. It would also increase inertia in the vertical direction. (But there may be other reasons why sand in the arm is a bad idea).
It seems to me more physics is need here. It is interesting to hear that someone is "blow away" by a tweak but the audio press is full of too much of this hype to give it credibility without solid analytical justification.
Jyprez (Threads | Answers | This Thread)
03-19-03
Putting sand in the arm to increase the arm's mass would req ... Seandtaylor99
03-19-03
As i understand it, compliance is how much a cantilever bend ... Jyprez
03-19-03
Jyprez. the increase in vertical mass is the problem with ad ... Twl
03-19-03
Atma-sphere offers a tonearm wrap for resonance control. a ... Wellfed
03-20-03
Jyprez, you're correct in your description of compliance, an ... Seandtaylor99
03-20-03
Ah, ok so you are (both) saying that the cantilever needs to ... Jyprez
03-20-03
Since the groove walls are angled, there is inevitably some ... Twl
03-20-03
Jyprez ... you're right ... if it only ever moved horizontal ... Seandtaylor99
03-22-03
Twl, if there is a large horizontal oscillation, as happens ... inpepinnovations@
03-22-03
Bob, i believe the mod as i applied it is forgiving of the l ... Twl
03-22-03
Twl, upon rethinking my concern for horizontal resonance at ... inpepinnovations@
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