How dose your plinth sound?


Iv been thinking about the materials that turntables are made out of and have a few questions. It seems that much of what is desirable is a material that will not resonate with what ever vibrations it is exposed to ie: floor, motor, styles and arm resonance ect. Yet many tables are made of materials that are very resonant ie: aluminum, glass, brass and.......wood. Wood can be very resonant depending on the type. This brings me to my questions. I see that the Teres is offered with different plinth materials, acrylic, plywood and solid wood(glued strips). It is also offered in different kinds of wood, cocobolo, jatoba, wengi and such. i cant help but think that the sonic signature between say ... acrylic and cocobolo is very different. When cut and shaped right cocobolo is a choice wood for marimbas, as is wangi. Acrylic just sounds like a dead chunk of plastic. Off the top of my head i would think that a wood like cocobolo would be a poor choice for a plinth or a platter(saw a picture) materiel. Teres wood plinths are laminated so this would cancel some of the natural resonance of solid piece but still. I will stop rambling on and just ask ..... what is the relationship between the plinth and the tables sound? If you had three acrylic platter Teres one with an acrylic plinth one with a cocobolo and one with a lead what would happen and why ........

Bill...
bkcme
Why not use ironwood? Very hard to work with but can be possibly better than cocobolo.
I rebuilt the plinth for my Well Tempered Classic out of Granite. 3 layers of 1.25 inch granite slabs that allowed me to preserve the WTC layered look totaling 3.75 inches thick and custom made (3) 2 inch diameter cone legs totaling at 132 pounds. It's dead quiet.
This forum encourages me to make a plinth out of solid slap 2x9x21 inch cocobolo. This plinth beats the VPI HW19 MK III badly. Then I added 15 lbs of lead to the plinth. This even provided tighter more defined bass, extended highs, more present mids, better focused image, darker back ground. I also used cork footing to reduce the sound echo from cocobolo material.
I would think that the best plinths would be be a high mass design composed of multiple materials with each having different vibration dampening characteristics. I don't know this for a fact, but such constrained layer designs work very well in loudspeaker cabinets and isolation shelves.
Nghiep, that's fascinating. Can you post some pix? It's good to see the DIY audio tradition thriving.

Your comparison seems to corroborate what Twl and Teres both heard. One question: have you tried a more rigid footing than cork? It would be interesting to hear you describe what a high quality set of spikes sounded like on your TT.