pbnaudioI don’t hear the "servo hunting" your describing rather I hear ... The "servo hunting" common to many DD turntables isn’t detectable as speed variations, ime, but as a veil to the sound. Before I went to belt drive, I had a Denon DP-6000 and then a DP-80. I can’t imagine ever returning to DD. |
lewm... If
you pick up a DD at a garage sale or from your uncle’s closet in
unknown condition don’t assume that because it “works” you are getting
its best performance. And then don’t think you know how they “all”
sound, please. Just to be clear, I bought my DP-80 brand new from a Denon dealer, and installed it in a VPI two-arm base. (That was before VPI made its own turntables.) The DP-80 was a very, very good table and I enjoyed it for years. But I think the very best belt drives sound better. Much better.
But one more thing about belt drive aficionados does irk me. That is,
they have no problem claiming they can hear the servomechanism of a
direct drive turntable hunting, yet most are eager to acquire a speed
controller for their a belt drive turntables, a device that itself
relies upon a feedback mechanism to maintain constant speed.
Sorry, you're mistaken. Most speed controllers, such as the VPI SDS and ADS and many others, are not servo controlled. The Phoenix Falcon/Roadrunner product was an exception.
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lewmcleeds,
What in your opinion are the "very best" belt drives? For me, the very
best belt drive turntables cost at least $25,000, new ... I'm not a member of the component-of-the-month club, so I really can't make a recommendation about today's best belt drive turntables. I use a VPI TNT Series III and haven't heard anything better - regardless of technology - since I bought it new back in the '90s. And I've been to the VPI house and heard all of their latest offerings, including the DD. (I did add an SDS to my VPI, which originally came with the older PLC controller.)
Did you
mean to imply by your response ... that the PE stuff sounds inferior to a
VPI SDS. No, I didn't mean to imply that, but the one PE I did hear was not impressive. But that's just one data point, so I don't put much value on it.
Those without an
external feedback mechanism like the RR still do employ a sort of
feedback; you set the speed under a load or no load condition, and the
controller relies upon the constancy of the AC frequency to keep the
motor operating at a certain speed, always based on the pre-set
condition. There's feedback going on, but it's referenced to AC
frequency .... To me, feedback implies a loop, so I don't consider that the PE Phoenix or VPI SDS units rely on feedback. They simply use the line frequency as a reference, as any typical synchronous motor does.
Most listeners of my acquaintance do not love the VPI SDS ...
I have no issue at all with the SDS, and I like that you can set the drive voltage to your preference ... although the detail on that isn't explained in the user manual.
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gochurchgoSo we have $10k tables that can’t regulate their speed. We do? Which ones?
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