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In Reply to: RE: No doubt about it.... posted by olddude55 on February 22, 2008 at 18:10:50
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My current set up has about 5 times this many small spots and I have a 1/8 inch vinyl sound deadening material interface between the spots and the platter to stomp out any ringing.
I take the Olly spots and I cut them into four smaller pieces. The goal being to use more support points but with the same overall surface area as about 15 of the large cork spots. This way the vinyl does not deflect when the stylus transcribes a groove.
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Here ya go...
_
Everything's nice when you're covered in ice...
..any additional info about what kind of foam that is? I know you said in another post you thought it could be obtained at a craft store.
Kinda reminds me of the $35 nonefelt phono-mat, which I got a roll of at Home Depot as kitchen cabinet lining for 5 bucks...
I'm not criticizing, just sharing an impression.
Also, any method to size/thickness/number/placement of the cork "spots".
Thanks again olddude55.
Chuckster
The foam is 3mm 12x18" dense foam that you can get at a crafts store like hobby lobby or michael's. They go for ~$.99. I got mine from hobby lobby. The cork spots are 1/8x3/4". You should be able to find the self-adhesive type at an office supply, hrdware, or builder's hardware store, like home depot. I didn't find 'em locally, but found a cheap source online. link below (no affil). 1/2" spots didn't work as well in this application.
Regards,
Jim
"Kindness is in our power, even when fondness is not" -- Samuel Johnson.
...of course now I'll just have to try and track these materials down asap TODAY, construct the foam/cork mat, and proceed to do extensive A/B comparisons!
And I really had intended to get caught up with work and had some other plans:
(My) Date: "I thought we were going to the game today?"
Me: "Sorry, babe. Something's come up; maybe we can get together later."
Another planned day of normalcy, interrupted by a sudden case audiophile nervosia.
I really thought I was in remission; now, relapse mode...
A/B test betw original mat and the spot mat should be short and sweet. My jammin' buddy, whose Technics SL-D2 we recommmissioned, was spinning records when I got to his house with the spot mat. He listend to it for about 10 sec in place of the stock mat and said, "Amazing. I'm never going back (to the stock mat)." It's when you start playing with different spot configurations that it gets crazy. The spot mat I sent to OD was the keeper of the protos I'd played with...so far :-)
Sorry 'bout the date, man. Hope she enjoys the improvement. My wife, who's pretty used to this stuff, joined me around side 2 of Dononvan's Greatest Hits. She couldn't help a few times expressing a spontaneous, "Wow".
Regards,
Jim
"Kindness is in our power, even when fondness is not" -- Samuel Johnson.
Agreed, it took all of ten seconds or on my DD table!
Jim
You got email dean man :)
Regards,
Jim
"Kindness is in our power, even when fondness is not" -- Samuel Johnson.
what exactly is it? Is it different for different turntables, etc.
I see from "olddude55"'s pic what appears to be very distinct geometry for this. I guess I try a pentagram shape and go from there...?
Also, I've seen some cork spots placed directly on some platters but I intend to use the foam mat on a Rega P3 glass platter. (This application of cork as a tweak also lends credence to the underlying concept of the Ringmat device, no?).
Please advise.
Thanks,
Chuckster
BTW: Yes, I'll be keeping the date; that comment was somewhat facetious for effect.
No, it's not different configs for different tables. I did a bunch of protos, and this is the best config I came up with for my 1210.
Yes, you can put some spots directly on platters in place of stock mats, *IF* you can still adjust your VTA properly. But with my Technics 1210, the 1/8" thick Olly foam/cork spots and 3/4" round cork spots are not equal to the the stock mat, which is 1/4", and with spots directly on my platter, VTA for my AT440 required a lower adj than I could get. So, I looked into other spot mat configs. For some reason, O'Malley's turned a light on for me, and he made further suggestions that were useful. The spot mat referred to on this thread is what I came up with finally and sent to OD. I've used both Olly's foam/cork spots, which are excellent, and regular self-adhesive 3/4" spots on the dense 3mm foam base pad. Sonically, IMO, they are very close on my 1210. Olly's yields all the improvements and a bit mellower sound. That's why I concluded that with either spot, the improvement will be significant over stock mats.
Regards,
Jim
"Kindness is in our power, even when fondness is not" -- Samuel Johnson.
Right. I think this works on the same theory as the ringmat, only this costs $2 instead of $130. Although, in fairness I've not heard the ringmat. I do know this mat works, and you hear the difference pretty quick. When I was looking into this, I found an article on Galen Carol's website, a highly respected dealer in TX and on this forum, that explains theoretically why the ringmat works. You'll see the parallel.
You got email, BTW :-)
Regards,
Jim
"Kindness is in our power, even when fondness is not" -- Samuel Johnson.
Jim
"Kindness is in our power, even when fondness is not" -- Samuel Johnson.
the mat was made for me by jazzthusiast. He told me the cost of materials was about two bucks.
The blue base looks like some kind of thin closed-cell foam sheet. The cork dots are laid out in a pattern similar to one from the Analog Department.
_
Everything's nice when you're covered in ice...
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