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TW Raven Owners: Set Up Questions

Through the magic of sweet talk, I turned my Orbe into a Raven and mounted my Graham 2.2/Benz LP.
I am looking for a isolation base for the Raven. I have a 1 3/8" piece of granite coming soon so I can ditch the MDF I use now (a temp. meas.!) Symposium, SRA, HRS, etc., can anyone share their experiences with isolation bases? I saw the thread about loosening the Stillpoints.
Initially I had an issue with using the rough side of belt. The belt shimmied up/down on the pulley at a specific spot on belt. Also, the speed fluctuated and I could never get it dialed in with the PSU. So, I went to the smooth side of the belt and then raising the back side of the motor (unscrewing one of the isolation feet) slightly moving the belt down from "center" on the pulley. This moved me from 33.2 to 33.3 and I have no more belt shimmying and the speed is rock solid.
I'd appreciate any tips/tricks etc.
gerardff
halcro's avatar
halcro
2,664 posts
 
From all reports.....a Minus K is good for all turntables.
peterayer
1,382 posts
 
I used my Vibraplane on the unsuspended SME Model 10 and noticed a significant improvement. I now have it under my suspended SME Model 30/12. I would say the improvement is only very slight as the 30/12 already has a superior suspension and I don't think that the Vibraplane offers much additional isolation.

I have also heard the Vibraplane under unsuspended Brinkman turntables and the sound was extremely good, though I can not say what actually contributed to what in those unfamiliar systems. I did hear though that that Brinkman dealer sells a lot of Vibraplanes for his tables.
bpwalsh
1,207 posts
 
Ebm, it might help if you came up for air once in a while :)
ebm
9,311 posts
 
Audio dealers not wanted, Mind you own business!
ebm
9,311 posts
 
I have TW AC1 turntable mr dealer.
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