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Turntable platter for the 2008 Maxon group buy

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#81
I am new to these forums and have been reeding about both the motor and the platter group buys. Sadly I have missed the motor opportunity but would be intersted in the platter and beering anyhow.
Probably either option would work for me, as long as the price is resonable and it could be shipped to Sweden.

//rené
 
#83
Can anyone give some idea of the relative merits of the Scheu, Clearaudio, VPI and Teres bearing/platters? Are they pretty much equal in quality, or are there differences that should be considered? I had been looking at the first three, but I see that the VPI TNT-6 is no longer listed on their site (although Neil di quote a price on it), and 1400 for the Teres was out of my price range. The VPI sounds best price wise.
 
#84
I'm okay with either VPI or Teres bearing. But Teres option will cost much more and more additional finishing work involved for the platter. I would loved to have their wood platter(very pretty) but not so sure about the composite platter.

It seems(IMHO) VPI platter/bearing are better deal(cheaper, $550 for both assuming it is TNT super platter, not the frosted acrylic platter shown in their website). Teres and VPI are using both inverted bearing design but cannot say which is a better bearing(material/machining wise and performance).

I'm just wondering which options is best for bang for bucks for all of us... Having a choice is hard. 🙂

Thanks both of you guys for following up with Teres and VPI.
 
#85
I am a bit of neophyte when it comes to platters and bearings, actually pretty much anything else. It does strike me however that the VPI is certainly a cheaper option $550 (for 1.75" acrylic platter and bearing). For the upgraded platter it runs the same as the Teres (+-$800) but with no finishing. Perhaps someone who is more familiar might be able to educate the the rest of us:
1. How much finishing is required for the Teres option.
2. Going with the VPI option does avail us to additional after market upgrades eg. center weight, platter ring etc.

Regardless i am just happy to be part of a group buy i just want someone to help us make an educated decision.
 
#87
Teres VS VPI platters

I am no expert on the subject of optimal materials for platters, the Teres is a composite material loaded with lead shot. Chris says it exhibits the same properties as building with hardwoods but does not require the (west) glue stabilization process. The VPI super platter is acrylic/stainless/acrylic sandwich, So you can see it is not simply an apple to apple comparison. Chris is a little vague on his explanations but I would assume the top bottom and outer perimeter are rough from the casting and require progressive sanding and polishing to the desired finish. Being DIY at heart I would still prefer to cast my own platter (epoxy composites) with chambers for lead shot and cover the perimeter and top with a desirable wood.

Bill
 
#88
Teres Bearing and platers

Moving forward on the group offering I am seeking input from more experienced individuals as to details to the mechanics for group purchases. I think I will offer ( if sufficient interest lies) the bearings separately from the platters. The bearing should not be to difficult to source and redistribute, However due to the weight/bulk/fragility of the platters they will present a more difficult scenario. My original proposal to Chris for the bearing was for 20 units, keep posting your interest and as soon as I can figure out how I will begin a new thread and transfer your info into it.

Thank you for your interest and patience.

Bill
 
#89
one more thing to consider (additions to niel_kaye's post),

If this group buy end up with bearing only, we need to keep in mind that the plan for platter design(DIY) or separate purchase of platter will be heavily depend on which bearing we end up with. Bearings are not universal, they are usually specifically designed for their mating platter.

I hope to get both bearing/platter together in one group buy in order to reduce any headache later of trying to find/purchase/make platter to fits the bearing or vice versa.
 
#90
nameci said:
one more thing to consider (additions to niel_kaye's post),

If this group buy end up with bearing only, we need to keep in mind that the plan for platter design(DIY) or separate purchase of platter will be heavily depend on which bearing we end up with. Bearings are not universal, they are usually specifically designed for their mating platter.

I hope to get both bearing/platter together in one group buy in order to reduce any headache later of trying to find/purchase/make platter to fits the bearing or vice versa.
Click to expand...

Take heed of this post. He is dead on with his remarks. 😉
 
#92
Wirewiggler
I would imagine that many of us would have difficulty finishing a
"rough" platter as per Chris proposal.It would need turning on lathe .How else could it be done?Is there a reason why we can't have a properly finished platter from Chris.
Regards
George
 
#93
From what wirewiggler described earlier, I don't think using lathe is required to finish up the platter, probably a lot of sanding.

Teres used to sell Clear acrylic platter unfinished(came in rough frosted finish due to machining) but all the machining was done for bearing/etc.... I remember one of the guy I know who spent hours and hours sanding/polishing and sanding again in order to get "Clear" finish for his acrylic platter(and he still was not happy when he decided that he cannot get it any more perfect).

For the composite platter, I don't think it would take as much as what it would have taken for clear acrylic finish since it is black and not having to worry about getting perfectly clear glass like finish.

On a separate note,
I'm still on the fence about this composite platter from Teres. Teres originally had clear acrylic platter for their offering(pretty sure for ease of machining and cost made commercial sense). There was some debates between original Teres board when they were deciding material for original Teres project. The sound of Acrylic is no where close to the sound of composite or PVC or even metal platter with composite/PVC top. Some of the original brains of Teres project left and formed another company name "Red Point" when Chris decided to commercialize the Teres). Sometime later, Teres decided that lead shot loaded clear acrylic platter is the way to go and offered this platter for their higher end models. Then, they introduced the wood platter saying that wood platter brings in more sonic benefit than Acrylic with lead shots. I'm not sure if this is a fact or not but I read somewhere that Chris's father was a very skilled wood worker and he produced the wood platters for him until he passed away recently. My guess is that w/o being able to source the wood platter economically(apparently it is very time consuming and requires great skill/effort, from my local wood worker), it made sense to go back to machining the platter from some kind of plastic. Due to their previous advertising of how much better wood platter sounded compared to acrylic platter with lead shot, I don't think it made sense for them to go back to acrylic platter. And now they have introduced composite platter.
I'm still wondering this composite platter is a true improvement over Acrylic with lead shot or for marketing purpose..... just my two cents.
 
#94
nameci said:
........And now they have introduced composite platter.
I'm still wondering this composite platter is a true improvement over Acrylic with lead shot or for marketing purpose..... just my two cents.
Click to expand...

I agree with your post and can add a little of my own experience with platter materials, FWIW. I think that acrylic does start to affect sonics in a negative way when the thickness is excessive.

I have a turntable I designed and built to accommodate a 70mm acrylic platter. I was never really satisfied with the performance of the table and decided to build a composite platter, a sandwich of Alum/Delrin/Alum with the final thickness being 70mm. The sonics were much better than the acrylic alone, however the amount of work involved to build such a platter is painstaking, even for someone with over 30 years experience in machining.
Each layer must be machined and aligned perfectly concentric to maintain balance and uniformity throughout.
I think a composite platter is a better approach than acrylic alone unless the acrylic platter is only 1" to 1.5" thick. Just my 0.02c.😉
 
#95
Vinyl-Addict,
thanks for your insight on the platter material.

Part that I'm wondering about the new Teres composite platter is whether it is a true composite platter(with metal/acrylic sandwiched or a black acrylic platter with the lead shots(calling it a composite). According to email description from Teres regarding platter, it looks like latter.

Looking at the picture, it is impossible to tell whether they are actually using sandwich method of different metal/plastic material or simply drilling small cavities(holes) around the edge of the black acrylic platter and filling them with lead shots(like what they did with Clear Acrylic platter with lead shots). I always wondered about this method since it is impossible to get the lead shots to fill equal weights in 6 to 8 cavities, even the small difference may cause imbalance of the platter(think of mis-balanced wheel in your car). But of course, this is much cheaper way to make a platter than true composite meghod.

http://www.teresaudio.com/i_cplatter.html

At least what i know, VPI super platter(or TNT MK4 platter I used to have), it is true composite platter with black acrylic top with ring or solid plate of lead or metal bottom.
 
#96
nameci said:
Vinyl-Addict,

Looking at the picture, it is impossible to tell whether they are actually using sandwich method of different metal/plastic material or simply drilling small cavities(holes) around the edge of the black acrylic platter and filling them with lead shots(like what they did with Clear Acrylic platter with lead shots).
Click to expand...

The "proprietary material" could just be Delrin. I seriously doubt Chris has made his own recipe and has it manufactuired specifically for Teres. The cost for such an undertaking would be substantial.
 
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