Frank Kuzma is releasing a new arm!


I just wandered onto Kuzma's web site to check on the specs of one turntable only to be confronted with a $25,000 9 " sapphire tubed sorta 4 point arm. Looks like a winner to me. I think it is a better design than the SAT arms but then I thought the 4 Point 9 was a better design than the SAT arms. Next will be a diamond arm tube:-)

128x128mijostyn

@mijostyn

@dover, You have your tonearm geometry mixed up. 

The 4 Point is a neutral balance arm. It will stay in whatever position you put it in. VTF stays constant regardless of position.

Wrong.

Here’s Michael Fremer in hs review of the 4Point9.

Because the 4Point’s two vertical bearing points and the cups they pivot in are well below the arm and thus its mass, the arm’s center of gravity is above the vertical pivot point—the opposite of stable balance. This produces what’s called negative balance, in which the VTF decreases as the arm is raised from the record surface.

Clearly you have no idea what you are talking about.

Specs & details aside, it still looks Playskool to my eyes....pardon.

And Lambo or Edsel, one can be dead in either.

@lewm , given the performance of Soundsmith's sapphire cantilevers I can believe that opinion or fact if you will. It is the thinnest cantilever I have ever seen and looks like it would snap with the slightest misstep but, I have already had one that would have definitely snapped a boron cantilever and the Soundsmith survived in perfect condition. Weight is another factor. Carbon fiber has become a popular arm tube material because it is stiff and light. The sapphire does not appear to be so light. Perhaps Kuzma designed it specifically for his cartridges?

@dover  well, that makes perfect sense. Sounds like a REALLY stable arm doesn't it? What happens when an arm designed to lower tracking force as it elevates hits a warp? Why do you think the counter balance weight of the 4 points is so low?

You are right, I have no idea what I am talking about. I did not have your post deleted because I want everyone to know what kind of f-up I am.