Micro SX-8000 II or SZ-1

Thuchan, I am not preconditioned by anything and partially by any “church”. I based my judgment upon my experience, it well known.

Dertonarm, I am sorry but you are wrong. There is no such a thing as “proper aligned flywheel in opposite position” and there is not such a thing as “free of horizontal force”. The situation when the horizontal bearing is free from any force is the worse situation as the microscopic bearing beatings become the subject of belt slipping or “wind blowing”. The best configuration in belt drive is the situation what the platter with it’s microscopic horizontal bearing beatings is biased by a small belt force.

Here is no minimization of bearing noise if you remove the “belt bias”. You might accustom to light plastic TT but in case of Micro the belt bias is absolutely negligible coals to the platter momentum. If you once try to hold the 8000 platter then you would not daydream about its impact by a few milligrams of belt tension.

Also, Dertonarm , your comment about the result in sonic terms: “increase low level detail, ambience and dynamic transient resolution” is a celebration of typical audio BS. I can give you $10.000 if you will be able to increase the low level detail, ambience and dynamic transient resolution with any of my Micros by applying the flywheel. Now, how you are you willing to bet? How about to put your actions behind your mouth?

Kipdent, I had HS-80 flywheel a few years back. A friend of my got it and you used it with SZ-1. He also reported an improvement, but he (how ironic it is!) reported absolutely different improvements. So, I got HS-80 and tried to use it with 5000 and 8000 and with all my desire I was not able to recognize any single difference beside making the Micro’s motor to run a bit hotter.

Now, Kipdent, let me to give you some points that you might consider before recognition of impotent of ambience and transients from flywheel. You use threads, I use belt. There is nothing wrong with threads but threads are very sensitive to proper tension. 1 mm different with threads is the same as 10mm difference with belts. The tension is important and to be able to say anything further I need to know what the tension you use. How long your platter will spin after you stop the power on the motor? Another point – you lay records directly on the metal platter. This way of doing the things has A LOT of problem. The “yellow” platter was made by Micro to accommodate the very cheap, bad sounding, SS amp from 70s. The “yellow platter” if it played with no proper TT mat has a LOT of colorations. You might want to review and then reevaluate you feelings about ambience and transients.

Kipdent, i have the same impression when I tested the flywheel on my Micro - the sound improved. But maybe I hear this only because it should serve me as the owner... as FM login states. So what.

Fm_login, sorry, but I am way past that period in my life when I was young and angry enough to react to a comment as sophisticated and throughout displaying deep audiophile and mechanic insight as yours.
Sorry that basic vector geometry is BS to you.
But that is certainly not mine nor Micro Seiki's problem.

Dertonarm, I passed the period in my life when I was trying to educate people. You stopped react because you lost your anger, I stopped to educate when it not worth it because I got wisdom and experience to deal with currently angry or formally angry audio people. I shared the facts, now to interpret them it is totally up you and others who have interest Micros. I would be worth to mention that I shared them not because my desire to argue with you or because my interest to educate you but rather to prevent you and you-like to spread disinformation and urban legends. If you have no sonic or mechanical insight on the subject then you probably shall not make the statements where you put yourself in a position of being a faulty authority on the subject.