New Turntable Advice

Do Note: The PS - X9 was solely introduced to be a Radio Station /Recording Studio designed TT.

It is so limited in no's as it was up against the Technics SP 10 MkII Models produced in the same era for competitive use.

The SP10 MkII had both the Industry Support and a Vast Consumer Support, the PS - X9 never got a look in.

Sony attempted to capitalise by increasing sales with a version that was the Consumer Market version.

As said, my experiences of the Sony Consumer Market Version when being compared to the SP10 MkII of which I am the owner of many models,  some UK and many Japanese Imports.

Leads to one conclusion, the Sony Model is inferior as a Mechanical Design in many many concerning ways, especially if Speed Control is wanted to be accurate and eccentric rotation is being deemed the cause of the unstable Speed Control.

The conditions witnessed on the Sony is not only going to impact on the Speed Consistency, the Stylus in contact with Groove Modulation can't be protected from unwanted energies being transferred to the Stylus when such poor mechanical interfaces are present.

The Platter being so important to Speed Control on the Sony Model is also a major concern as the thing is fragile. During at least Ten Years I have never discovered a Sony Platter only for sale, but have bought many SP10 MkII Platters and kept them, gifted them and even have one in SS to be used to compare to a Phosphor Bronze Platter that can also be used on the Mk II. The Sony is strictly a one platter only design.  

Never have I been concerned about unwanted movement of a Bearing Housing on a SP10 MkII, only the Spindle / Bush Interface and Spindle / Thrust Pad Interface are the consideration and improvement work undertaken.

The latest used design for the SP10 MkII as the Kaneta Version, removes any concern for movement of the Bearing Housing, as it is a interference fit into the Panzerholz Chassis/Plinth.

As stated previously, the Kaneta Version opens up a whole new thinking for the Bearing Design and a Stator Bowl is already a Donor to be modified to enable the change of Bearing design to become realised.

I can strongly recommend the SP10 MkII to the OP, but know how much of a great experience is on offer from the SR 510, for such low monies, I will keep to this as the route of investigation for them, especially as it is not a Platter with a magnetic film used to control speed, and when scratched is unusable.

The PS - X9 and Consumer Model I have referred to both have Platters with peripheral coatings of Barium Ferrite as the Magnetic Speed Control, when this has incurred a minor damage, it is Kaput, Toast, Pancaked TT, or can be used as an Ornament.       

As stated, a Spare Platter not discovered in approx' 10 Years of regular searches.

I have even picked up a selected of DP 80 Platters in this same Timeline, even a Phosphor Bronze design.  

Good advice yes my Sony PS-X700 has the same encoder on inside of the platter!!

Stethoscope great idea for the bearing. Is there a new model which is at the same precision as the Sp10 Mark II? 
 

thanks great Advice 

The fella that refurbished my Sony PS-x700 is here in the states. He specializes in Japanese TT.  He has both a Nak, and a X9. I'll go see them but will also weight these other tables 

In my time of working with JVDD TT's, I have taken Barium Ferrite and other Coatings that are an equivalent, becoming damaged as a serious consideration. As said, I have bought into having spare Platters to be available where possible.

Note: Platters show occasionally not monthly, maybe yearly if searches are maintained, but not for Sony Models I own. 

 The SP10 MkII Platter purchases are nothing to do with Peripheral Magnet Coatings, most bought are probably due to me being a hoarder, and having friends with their own designs for the MkII Platter hence the gifting of platters. 

If I knew what I did today, I would own Yamaha and Micro Seiki over Sony and Denon as a multiple unit purchase, even though finding the cheaper sale models will have been over a longer period of purchasing. Reason being each are not using a Platter with a Periphery Magnet and each have models with the Electronics that are Off Board from the TT itself. These base designs will prove to be very easy to create the Kaneta Design, incorporating a Resin Impregnated Densified Wood Chassis/Plinth.

Hind Sight is always a good manager, but after having heard the Kaneta Version of the SP10 MkII and getting the core instinct the design is eking more than is already offered from a modified MkII. Stimulates the idea that a TT that is able to be produced as a Kaneta Design using Resin Impregnated Densified Wood Chassis/Plinth, is to be easily discovered as an improvement over the original design for the TT. Add to this other Treatments for the Mechanical Interfaces to add modern materials and remove the metal on metal contact that does occur and the possibilities become a whole new area of interest.   

The SR 510 is also suitable for redesign for the Platter and is to be investigated to be used as a Kaneta Design, a Bearing Housing / Stator Bowl and with Electrical Lead Outs is purchased and to be learnt if the already produced electronics are able to create Spindle Rotation, Speed Control will be the challenge for this design change..

With what I know about Platter availability for certain Sony Models, and the cost I have seen models command, the idea that one minor damage puts the TT out of service is not a good condition to have running parallel with a very expensive purchase.

Does a Vendor actually inform that the Magnetic Coating in intact and no evidence of a damage to the coating is able to be seen??? 

If we were talking near $500ish, I would not say too much, one pays their monies and takes their chance. The TT is not too different from a sacrificial Cart', being after 'X' amount of hours in service it is spent.

The OP is into going up to $5K without an arm, I am not directing the OP towards any TT, that can have a really short lifespan due to being obsolete as a model and not known to have support readily available to correct a Barium Ferrite Damage.

If different is known to my experience of investigating Periphery Magnet Damage Repairs, I am all ears to learn what is known   

As for the statement " not known to have support to correct a Barium Ferrite Damage.

I have too many years of looking for the fix, which has never been found.

I once found a TT which had a Platter Fixed that had a magnetic sensor design, where disc magnets were used as an alternative, the TT is not remembered as my PC crashed and the Bookmark went down the swanny. 

A repair has never been discovered by myself that was a duplicate of the one lost  or any other methodology as the repair.

There is the odd report seen where a TT owner is to claim they are able to use a TT with a Periphery Magnet Coating Damage, but these are very uncommon as report.    

After doing many searches in many Countries, what is known and seen in a fair amount of forums, is that Magnetic Coated Periphery Rims on TT Platters get damaged from simple user mistakes, no different on simplicity to the simple user mistake made that trashes a Cart'.

Magnetic Coated Peripherals are Very Very Fragile - Non Repairable? - Spare Parts are Very Very Rare!! - Found on Very Very Expensive TT Models!! - Act in Haste - Repent at Leisure - Learn to Enjoy what might become a TT Ornament .       

The current top of the line Technics is the SP10R. With plinth, it’s the SP1000R. But that model is more on par with the SP10 mk3, both superior to the SP10 mk2, and far more expensive. (I’ve owned both mk2 and mk3, and I conferred a few years ago with JP Jones who owns both a mk3 and a new SP10R and has measured the performance of both.)