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Tone arm effective mass
Tone arm effective mass
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Old 19th July 2012, 07:01 PM   #11
jan.didden is online now jan.didden  Europe
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Yes. There are also tangential arms that actually has a short arm so that the tangential tube can be placed outside the turntable perimeter and lower, making the vertical pivot point level with the record surface.

jan
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Old 19th July 2012, 10:42 PM   #12
dtut is offline dtut  United States
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Jan,

Thanks. "Slider" = "sleeve."

I just revisited that program. I wasn't really paying attention the first time so when I looked the second time - understanding "slider" this time - the light came on. I've been building linear trackers for a couple of years, but effective mass and, especially, resonant frequencies have been nearly complete unknowns to me. I hope this program is accurate because I want to start plugging in numbers immediately. And once I have some answers, maybe that will push me to do some measurements.

There have been some real advances made for DIY LTs - check out the link Kevin posted - but numbers and measurements just aren't there, yet.
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Last edited by dtut; 19th July 2012 at 10:57 PM. Reason: Revelation
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Old 21st July 2012, 10:27 PM   #13
AVWERK is offline AVWERK  United States
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Janneman
That arm you posted looks like a real contender...
Very similiar to the Air Tangent in operation

Do you have any more info on this?

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David
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Old 22nd July 2012, 09:00 AM   #14
jan.didden is online now jan.didden  Europe
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There's a thread on this stuff in Vendors Bazaar here: http://www.diyaudio.com/forums/vendo...-tonearms.html

I'm just at this time looking to upgrade my LP replay system and as you say these look very good.
What makes me hesitate is that I cannot find any more tech info, like effective tone arm mass to determine whether I should use it with a high- or low compliance cartridge, or the noise production of that pump.
So if anybody does have that info, I'd like to hear it!

jan
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