RE: Hanss T10 running .3% too fast

Posted by flood2 (A) on June 27, 2024 at 01:01:47

In Reply to: RE: Hanss T10 running .3% too fast posted by joey1127 on June 25, 2024 at 09:35:32:

No, it is your expectations that are a little optimistic!
A semitone requires about 1% shift in speed so 0.3% is inconsequential/inaudible unless you are specifically referencing it to CD. Even then you are assuming the cutting lathe was running at perfect speed and you are also assuming that (for an analogue source) that the tape was running at the correct speed at the time of cutting. You are presumably familiar with the speed anomaly of the stereo Kind Of Blue A-side compared to the mono cut?

You haven't mentioned if you "perfectly" centre your records? Almost without exception there will be SOME eccentricity and the eccentricity will be enough to cause audible wow on the right source material which generally exceeds the platter wow.

As I explained, the synchronous motor speed depends on the mains frequency and also to the load on the motor - this is why the motor is typically set slightly fast to account for the drag created by the stylus in the groove. Unless you are measuring mains frequency and factoring that in, it is completely unreasonable to compare the absolute speed with a CD. If you want absolute speed accuracy then stick to a CD. Wow is to be expected with a belt drive - again if you want low speed variations then you should stick to a DD turntable or CD.
Not even quartz lock DD turntables are "perfect". One review of the Technics SP10R had the speed measured at +0.12%.
Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

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Follow Ups Full Thread

Topic - Hanss T10 running .3% too fast - joey1127 17:53:15 06/22/24 (9)

RE: Hanss T10 running .3% too fast - Triode_Kingdom 10:15:24 06/23/24 (1)

RE: Hanss T10 running .3% too fast - joey1127 11:02:48 06/23/24 (0)

RE: Hanss T10 running .3% too fast - flood2 22:51:45 06/22/24 (0)

RE: Hanss T10 running .3% too fast - joey1127 17:57:00 06/22/24 (0)

RE: Hanss T10 running .3% too fast - joey1127 17:55:57 06/22/24 (4)

RE: Hanss T10 running .3% too fast - ralphfcooke 09:13:23 06/25/24 (3)

RE: Hanss T10 running .3% too fast - joey1127 09:35:32 06/25/24 (2)

RE: Hanss T10 running .3% too fast - flood2 01:01:47 06/27/24 (1)

RE: Hanss T10 running .3% too fast - joey1127 05:55:36 06/27/24 (0)

Follow Ups

RE: Hanss T10 running .3% too fast - flood2 01:01:47 06/27/24 (1)

RE: Hanss T10 running .3% too fast - joey1127 05:55:36 06/27/24 (0)

RE: Hanss T10 running .3% too fast

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