New Teres 360

David,

My take on Chris' comments was that it is a sonic thing. I mean, that table has to be 8-10k, and I don't think Chris would do that just to play dress up. Damn, the thing weighs 150 pounds+! Talk about mass-loading.

Now as far as copper & dark wood go, I like it. I'm finishing my new rack, hopefully this week (probably not, but I can hope). I'm using red coconut palm, mahogony, curly maple, solid surface countertop material, lots of lead, and, you guessed it, copper. I'll get some pics when I can.

I will include a link to one pic that shows copper & brass side-by-side on my TT:

?????

I got rid of the brass cones (not the Audiopoints), and I am thinking of making the armboard riser out of copper. I just like the look.

I wish Chris would get in this discussion so we can know the purpose of the brass on the platter. He made a couple of posts on AA, but that's it. I'd like to hear more....

Well, my take on it is that it is a step in the right direction.

Regardless of the visual aspects, which may or may not be acceptable to some tastes, there are some good ideas there.

First, the brass is definitely a better sounding material than aluminum.
Secondly, the brass makes a better coupling with the spindle and the brass bearing housing, while the upper wood portion of the platter provides the desired impedance coupling with the record(which is apparently what people are liking about the wood "sound").
Third, the brass is much heavier than the wood, and having it on the bottom of the platter makes it more rotationally stable(due to the higher mass) but it also requires less thickness, and allows the greatest part of the platter mass to be located below the center of the bearing, for better bearing stability.
Fourth, the belt rides on the brass, and the brass can be machined more perfectly, and is more stable than the wood portion.
Fifth, the brass motor housing provides a much better vibrational exit path for the inherent motor vibrations, and will result in less unwanted vibration in the critical motor drive area.
Sixth, the brass spacer under the armboard also does the same thing for the vibration sinking from the tonearm.

I have found that Audiopoints(brass) make the best points for supporting my Teres turntable, and adding some brass into key areas of this turntable design make a better coupling for the vibrations to exit the critical areas of the platter, tonearm, and motor.

I have some ideas for incorportating some Sistrum ideas into the Teres turntable, for even better performance. I haven't contacted Chris about this, but maybe he might be interested in talking to me about it. He seems to be discovering some things that we are already implementing in our Sistrum/Audiopoints designs for years now. We have collaborated with other companies about their designs. Perhaps there would be a synergy there. If he likes what brass can do, he'd be really happy with a formulation of the correct brass and optimized geometry of it, in these applications.

"I did not think he was delving into metals as a means of improving the sonics of the table..."

That's exactly what he HAS been doing, at least since June when we spoke about the sonic effects of brass and other materials at Cello's gathering.

TWL hit on alot of the things that CB was mentioning.

OK, Doug, I understand from your post that this is what he HAS been doing. Sorry I wasn't able to attend the festivities and learn this first-hand and also for apparently crudely interpreting his comments on AA.

I fully accept that others might find the brass-look appealing. I'm not saying they are wrong. To each his/her own. And, in limited amounts, I might agree. If the only reason for implementing the brass or other metals is to improve sonics, good for the sonics, but it is my opinion that it should be disguised, because it is not something I would buy, personally. Wonder if the brass, or whatever, could be implemented beneath a thin layer of veneer for those who prefer all-wood. Maybe that would violate what ever benefits were gained, though.

Sorry for not responding. I have been slammed with getting ready for RMAF. Can't say much now other than that TWL is on the mark. More details after the show....

Chris