Vinyl Asylum

Krenzler mentioned in an earlier thread the Thrales arm.

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qualityman

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It was posted with a wonderful moving diagram of how it behaves and works. What an amazing piece of engineering. It brings to mind an arm Garrard put on one of its turntables, can't remember which one but it could have been the GT 75. Allthough crude by Thrales standards it attempted to keep the cartridge alligned correctly in the grove by using a swivelling headshell controlled by a second rod parallel to the tone arm. It never caught on as the whole turntable was considered cheap tat. Just wondered if anyone else remembers this particular Garrard arm and if any other manufacturers continued developing a similar arm with any degree of success? Thrales must have got the idea from somewhere.

http://www.audioasylum.com/audio/vinyl/messages/575748.html (Open in New Window)

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Re: Krenzler mentioned in an earlier thread the Thrales arm. - Headshell 10:20:20 09/16/06 (0)
Another source:
http://www.thevintageknob.org/THEVAULT/ZERO100SB/ZERO100SB.html
- http://www.thevintageknob.org/THEVAULT/ZERO100SB/ZERO100SB.html (Open in New Window)
Re: Krenzler mentioned in an earlier thread the Thrales arm. - Headshell 10:02:56 09/16/06 (0)
I owned one of these Garrards myself. It was the Zero 100, which came as an idler and as a belt drive. I had a Zero- 100 SB. The SB is for Silver Base, a floppy kind of aluminium plinth.
Technically the arm behaves nearly in the same way. The resulting tracking angle errors are practically zero in both cases. But in both cases the sacrifice will be worse than the normally resulting max. weighted tracking errors.
These drawbacks are:
- large effective arm mass
- much arm pivot friction.
My Zero 100 SB had much play in the platter bearing, unreliable lever operation and a silly jump halfway the arm- return track which left bad indentions in some of my lp's.
I'm not exactly a fan of cheaper Garrards.
After this Zero 100, Garrard still introduced another player with that kind of pseudo- lineair arm. With lower arm mass and less friction.

http://www.tnt-audio.com/sorgenti/garrarde.html
- http://www.tnt-audio.com/sorgenti/garrarde.html (Open in New Window)
Re: Krenzler mentioned in an earlier thread the Thrales arm. - rturja 09:50:52 09/16/06 (0)
Garrard Zero 100 p'haps?
- Garrard zero 100 at Vinylengine (Open in New Window)

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