Turnable database with TimeLine


Here is a database showing various turntables being tested for speed accuracy and speed consistency using the Sutherland TimeLine strobe device. Members are invited to add their own videos showing their turntables.

Victor TT-101 with music

Victor TT-101 stylus drag

SME 30/12

Technics SP10 MK2a

Denon DP-45F
peterayer

Showing 4 responses by hiho


Direct drive is not the only drive system that uses speed correction. Micro Seiki belt drive turntables and some others use speed correction on their motor if not the platter. Either way, it's still servo. Is that always a bad thing?

I don't think one drive system is superior over the others. I just happen to prefer DD for its mechanical (if not electronic) simplicity. The stylus does NOT know nor care what is making the platter spinning smoothly, precisely, and/or consistently. It's just picking up groove informations between rotations. Either way, let you ear decide.

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Lew, this is the first time I ask such question: how does it sound?

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03-25-14: Lewm:
"... do you perceive that the TT-101 and the TT-81 have exactly the same motor? It looks from photos that the TT-101 motor might be different in size or in some other way from that of the TT-81. I know they are both coreless types."

I have only owned the TT-71 before and I do know the it uses a core motor. Based on motor model numbers (TT-71 = M932A, TT-81 = M922A, TT-101 = M926) and pictures I gather online, it's possible the TT-81 uses a similar motor like the TT-71, which is NOT a coreless motor. If you look at this picture in vintageknobs.com the TT-81 appears to be an electronically more sophisticated TT-71 with similar core motor. I think the TT-101 is a different animal with different motor (coreless) and electronics.

Drawings of each motor in exploded view:
TT-71
TT-81
TT-101

Of course, the best way to find out is for Halcro to take a picture of the motor or innards of the motor of TT81 once and for all. If we see the coils wrapped around an iron core then, of course, it's a core motor.


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03-25-14: Lewm:
"Hiho, I can see the light at the end of the tunnel, as regards a report on how the QL10 ensemble "sounds".

Whew! Just reading the travail you went through is adventurous! I look forward to an eventual sonic evaluation of the TT101 comparing to your other DD tables.

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