Turntable speed accuracy

Dear Thuchan, With all your gear (past and present) you of course have much more experience with selling than I. But I have much more time to watch the 'markets' mentioned. Ebay.de is different than audio-markt.de . The latest one
is more suitable for the items with an 'fixed price' in mind ,the former if one has a vaque idea about the price. The listing time is also different: 10 days versus 1 month
min. Ebay.com is more problematic for his TT because of
the postage cost and transport outside of Europe. But like you I also prefer ebay.de. In casu however it is about Geoch and the question what may be the best solution for his problem.

Geoch, Since Brinkmann was employee by Symphonic line it may be the case that he designed this TT? To me your TT looks like an Brinkmann TT.

Regards,

Certainly looks like a Brinkmann but the bearing is quite different and unique. I find it quite unlikely if Brinkmann designed this bearing 20 years back and now abandoned this in favour of the very small & plain bearing inside the new TTs with Brinkmann logo. Honestly I don't really care (as I would'nt trade it for a Brinkmann TT). The only thing that I would miss is the helpfull armboard.

Lewm: "Do you mean to say that the Cosmos is subject to M Fremer's critique (motor mounted to base/platter on spring suspension, which is also my criticism), or not?"

The Cosmos had the motor and platter mounted on the same subchassis, according to a review in the old AUDIO magazine and Stereophile, therefore it is an improvement over the earlier Sapphire and Star in terms of speed stability. Cosmos's design was largely responsible by the talented Allen Perkins of now Spiral Groove and he is one designer who does care about speed issues.

Atmasphere is right that Empire had the foresight to do the same thing in the 208 decades ago and is one of the greatest vintage turntables. Respect!

P.S. Linn has a fixed motor and suspended platter.

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Excerpt from Stereophile review of the Sota Cosmos:

"In the Star, the motor is mounted, for isolation purposes, on the fixed portion of the base assembly separate from the suspended subchassis—the usual practice in this type of turntable since AR started the breed in the '50s. In the Cosmos, the motor is mounted directly on the suspended subchassis, along with the bearing, platter, and arm. This provides an unvarying geometry between the motor and the turntable. The Cosmos relies on its damped subchassis and multi-layered platter to isolate the arm and record surface from motor vibrations."

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Thanks, Hiho. I am heartened that SOTA fixed that problem. For years with the SOTA Star Sapphire, i thought pitch inaccuracy on piano was normal for LPs. (It replaced a TD125 way back in the early 80s, but I have no recollection of the sound of the TD125.) I have heard from a reliable source that the Spiral Groove tt's are superb as well, attesting to the design skills of Perkins.

For an embarrassingly long period of time I was laboring in my spare time on a complete revision of my Atma-sphere amplifiers. Thus I was not really doing much listening except with a Parasound ss amplifier that did not compel me very much. Two or three days ago, I got my system back up and running with the Atma amps driving the Sound Labs (also with highly modified and very simplified input circuit). By the same token, it was my first extensive audition of my Technics SP10 Mk3 with Reed tonearm. All I can say is "My goodness". Talk about speed and pitch stability and rhythm; that thing is amazing. My wife, who takes only a passing interest in my audio system and in my jazz listening, sat with me for 2 hours, riveted as was I. I have been an audiophile for 35 years but only with DD and idler-drive for maybe two years. I have no plans to go back to bd.