Kuzma 4Point Tri-Planar

Does anyone have direct experience with these two tonearms? I own Tri-Planar, I love it and would like to add either 4Point or Graham to use with Orpheus. Thanks!
Hi Mike,
My remarks to Doug were merely meant to indicate that there is some question in my mind whether the cartridge vibrations have an unimpeded path into the wood arm tube in the first place. If the mechanical energy put out by the cartridge cannot get to the wood, then those properties of wood cited by Doug would not be of any benefit. Because the rudimentary headshell consists of a piece of brass(?) held at an angle against the flat surface of the wood, I wonder how efficient is the pathway of energy transfer. This all goes without saying that I heard the Talea in a system using speakers like mine (Sound Lab) and amps like mine (Atma-sphere) and absolutely did like what I heard, very much. So regardless of the physics and these airy discussions, the Talea does a lot right.

hi Lew,

my comments were not any sort of criticisim of yours. only that i don't know so much about cause and effect, but that i hear the result.

i know that Joel Durand has tried literally hundreds of arm wand materials and shapes and also has access and skills to use many various analysis tools. i've been directly involved with listening testing of material differences for various bits of the Telos and have heard differences i would have never expected.

i agree that using a wood arm wand and a single screw to attach the cartridge plate to the wood arm wand appears on the surface to be less than optimized science....and your's and other's reactions are understandable.

i'll leave the scientific discussions to others.

best regards,
Dougdeacon, I think the thing I am reacting to in your posts is the word 'chaotic'. What meaning/context are you using that word? As in Chaos Theory? BTW that is the meaning that I used.

I maintain that wood is relatively unquantified with regards to other materials. You can have two sample taken from the same board side by side and have different properties. I have yet to see any that I would consider 'non-resonant'. 'Non-resonant' would be materials like E.A.R.'s 2003 compound or some of the damping materials made by 3M. Wood will still need damping materials to really control it.

Am I just being too literal??

Something else that has bothered me in this discussion: people have been talking about vibration moving from the cartridge to the arm.

FWIW, the cartridge should have no such vibration, being held in locus by the arm. The difference between the motion of the cantilever and the cartridge body will effectively be describing the resulting output signal. Now it **is** possible for the arm tube to move, sympathetically due to vibration elsewhere in the room, most likely from the loudspeakers. This can color the presentation as this vibration can be added to the locus of the cartridge body.

This is why an arm tube should be damped. A very simple proof of this is to use an undamped tone arm to make a tape recording without the speakers playing. You will find that it sounds quite a bit different (better) when compared to the same track but influenced by speakers playing at the same time.
That's crap. Wood has been studied up the wazoo for centuries and there are accepted standards and coefficients right down to various sub-species.
Maybe they have and that's the reason why the sacked the Space Shuttle program ....