Micro SX-8000 II or SZ-1

Most of the 5000s which are extant are the RX-5000. The "RX-" designation is a solid bearing. There exist some SX-5000s as well. The "SX-" prefix denotes an air bearing turntable. The SX-8000 and the SX-8000 II are roughly similar, but the SX-8000 II is physically more 'integrated', and it usually comes with a vacuum hold-down platter. The SX-8000 tends to go for less than the SX-8000 II but I have not seen an SX-8000 II for sale for many moons (last one I saw went for something like $15-16k if I remember correctly). The SX-8000s I have seen recently (last 18mos or so) have gone for $9-15k on Japanese internet auctions, in varying condition. There seem to be a fair number more of them out. I have never seen an SZ-1 for sale, though I imagine if it came out, it would be more than the SX-8000 II.

I have an SX-8000. I have compared it to the best Japanese DDs of the era but not to rim drive tables. I have not heard a table before or since which digs as much info out of the groove as the SX-8000 with a MAX-237 arm (don't have a 282) and a ZYX UNIverse. When perfectly dialed in, it is a very smoooooooth sound. The large DDs (Exclusive P3, Technics SP-10Mk2 & Mk3, and Sony PS-X9) are also quite good, and you 'feel' the drive which you don't get with the Micro, but the Micro is soooo quiet.

Here are two Pics from this HS-80 (from Kipdent System)
HS-80
in Action
HS-80 MS
it is passive
or that way
RX-5000 special

those Micro Seiki are rare now, the 5000 model is more common and sought after, because it is very reliable and easy to go. The 8000 series was always rare, sometimes you can find them in Japan.
The later ones were made in a time when Analog Business was reaching the End, not many around.

I have read that many consider the RX-5000 superior to the SX-5000. One would think the reverse to be true but I have not the pleasure of hearing either turntable. Bob

T_bone, Are those Goto transducers in the photos? I heard a complete Goto system locally in northern Virginia, driven by Kegon plus two other amplifiers and using Goto preamp and electronic crossover. And I was underwhelmed. Good but no goose pimples. Sorry for the OT comment.

I have always been intrigued by the HS-80. I believe the recommended way to set it up is so that it is directly opposite the motor. In this way the forces on the platter due the belt should cancel each other out and there should be minimum force, and thus noise, on the platter bearing.

The disadvantage, as I see it, is that you have greatly reduced the contact area of the belt with the platter. With a thread the contact area with the platter is already very small and with the HS-80 it is further reduced.

The "HS-80 MS" illustration avoids this but does not minimize the forces on the platter bearing.

It is an interesting choice of trade-offs. Set up would be critical. There are variety of formulas for pulleys, belts, contact area, wrap angle, coefficients of friction, and so forth but they were a bit overwhelming to me.