Hi all:
Just thought you might like to have a look at YATP (Yet-Another-Turntable-Project).
This one is the product of about a year's thinking and one frenzied weekend of drawing, cutting, gluing, screwing, etc.
Platter is solid cast brass, shaft is stainless,, bearing housing is aluminum with brass sleve and hard steel ball. Motor is a/c synchronous. all of the above robbed from an old Unity Rotary Platform. 😉 So, it is 33 1/3rpm only, which given my LP collection, is fine with me.
Plinth is one layer 1/2" HDF (high-density-fiberboard) and 3/4" laminated Pine, with a spine of 1/8" aluminum embedded between. The spine was glued in place in the cavity with PL-400 construction adhesive (the stuff used for gluing floors to joists in house construction) and the HDF/Pine glued together using the same adhresive.
As you can see, the plinth has no finish at this point, but the table will get torn down this weekend and coated with clear marine epoxy. This will form another conatrained layer, for a total of 4.
The arm is a Syrinx, completely rebuilt and re-wired with 0.5mm OFC copper, continuous from cartridge tags to phono plugs. I used 3/16" teflon fuel line tubing for the cable body, with the wire twisted inside. The arm is carrying a DL103D.
All in all, it sounds MUCH better that my ancient Ariston RB11/Grace 707. The bass is solid and the mids & highs have much more definition and detail.
I will post another pix when the plinth is finished. I think it will look nice and I am very happy with the sonic improvement in my system.
Jess
Just thought you might like to have a look at YATP (Yet-Another-Turntable-Project).
This one is the product of about a year's thinking and one frenzied weekend of drawing, cutting, gluing, screwing, etc.
Platter is solid cast brass, shaft is stainless,, bearing housing is aluminum with brass sleve and hard steel ball. Motor is a/c synchronous. all of the above robbed from an old Unity Rotary Platform. 😉 So, it is 33 1/3rpm only, which given my LP collection, is fine with me.
Plinth is one layer 1/2" HDF (high-density-fiberboard) and 3/4" laminated Pine, with a spine of 1/8" aluminum embedded between. The spine was glued in place in the cavity with PL-400 construction adhesive (the stuff used for gluing floors to joists in house construction) and the HDF/Pine glued together using the same adhresive.
As you can see, the plinth has no finish at this point, but the table will get torn down this weekend and coated with clear marine epoxy. This will form another conatrained layer, for a total of 4.
The arm is a Syrinx, completely rebuilt and re-wired with 0.5mm OFC copper, continuous from cartridge tags to phono plugs. I used 3/16" teflon fuel line tubing for the cable body, with the wire twisted inside. The arm is carrying a DL103D.
All in all, it sounds MUCH better that my ancient Ariston RB11/Grace 707. The bass is solid and the mids & highs have much more definition and detail.
An externally hosted image should be here but it was not working when we last tested it.
I will post another pix when the plinth is finished. I think it will look nice and I am very happy with the sonic improvement in my system.
Jess
Nice work Jess, not surprised it sounds better than your old Ariston. Love the brass platter too, must have been fun to turn that. Are you using a sub-platter and belt drive?
Jeff
Jeff
As stated the platter was donated by an old Unity, so I got it pretty much as you see it. Good Thng too, 'cause there's no way I could have cast or machined it. 
Yep, it is belt drive.
The platter has an inner face for the drive (like most Japanese belt- drive tables) about one-half of the diameter of the outside and the motor is under the rear left of the platter.
😀
Jess
Yep, it is belt drive.
The platter has an inner face for the drive (like most Japanese belt- drive tables) about one-half of the diameter of the outside and the motor is under the rear left of the platter.
😀
Jess
PS: Jeff - if you are coming to the 'Fest at Daves on July 28th, you will probably see it, 'cause I plan to bring it.
Mr. Willing and company...
jesse, beautifull table. I am so jealous of those that actually have some Skil ...ooops, that was for Chris, elsewhere.
beautifull table. Jeff hoping to make it out there. Anything I could bring to Daves? A t-amp, or phono stage or? Someone let me know....
stew
jesse, beautifull table. I am so jealous of those that actually have some Skil ...ooops, that was for Chris, elsewhere.
beautifull table. Jeff hoping to make it out there. Anything I could bring to Daves? A t-amp, or phono stage or? Someone let me know....
stew
It looks beautiful. What are the legs made of? How heavy is the platter, is it hollow inside?
Marek
Marek
from Vinyl-Addict:
Thank you 🙂
from markest:
Thank you too 😀
The 'legs' are cups made from short sections of 2" PVC drain pipe, with caps glued into one end.
I found three suitable springs from my junk bin (no idea where they came from) and epoxied a furniture nut (1/4" NC thread) into one end of each spring, doing my best to have them set square to the centerline of the spring.
Lastly, I wrapped the spring(s) in thick (1/4") felt and pushed them into the PVC 'cups'.
It weights about 10 Kg. It is hollow.
Jess
Thank you 🙂
from markest:
Thank you too 😀
The 'legs' are cups made from short sections of 2" PVC drain pipe, with caps glued into one end.
I found three suitable springs from my junk bin (no idea where they came from) and epoxied a furniture nut (1/4" NC thread) into one end of each spring, doing my best to have them set square to the centerline of the spring.
Lastly, I wrapped the spring(s) in thick (1/4") felt and pushed them into the PVC 'cups'.
It weights about 10 Kg. It is hollow.
Jess
Here's a photo or two of the finished table...
I'm not very good at the fine finish, but at least it is sealed up and won't swell up on a rainy day 😉
As to the sound, I got the motor mounted on a rubber-isolated disk (it's under the platter) and the background noise level went waaaaaay down. It sounds really good - solid and crisp in the highs with far more bass than the old setup had.
All in all, I am really happy with the project. It's not the engineering accomplishment of some of the other threads here, but it is not a bad example of what can be done with and old table with some basically good parts. Total time (not including thinking) about 2 weeks - total cost (not including donor Unity table) about $35.
BTW: the brass 'cabinet-knobs' are my idea for disrupting the resonances in the plinth; they work, too.
Cheers all
Jess
I'm not very good at the fine finish, but at least it is sealed up and won't swell up on a rainy day 😉
As to the sound, I got the motor mounted on a rubber-isolated disk (it's under the platter) and the background noise level went waaaaaay down. It sounds really good - solid and crisp in the highs with far more bass than the old setup had.
All in all, I am really happy with the project. It's not the engineering accomplishment of some of the other threads here, but it is not a bad example of what can be done with and old table with some basically good parts. Total time (not including thinking) about 2 weeks - total cost (not including donor Unity table) about $35.
BTW: the brass 'cabinet-knobs' are my idea for disrupting the resonances in the plinth; they work, too.
Cheers all
Jess
An externally hosted image should be here but it was not working when we last tested it.
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