RE: Speed accuracy on vintage belt drive TT with "electronic speed control"

The speed adjustment on this turntable is specified as +- 3% which should cope with the slow speed you note. However that range is pretty wide and was probably not expected to cope with the user wanting adjustments of 0.5% hence it is fairly crude.

The speed variation is controlled by the knobs on the plinth but these, in turn, relate to variable resistors on the circuit board inside. The variable resistors should be set to centre position which may or may not help if they are not.

The belt may also have stretched over time and although the speed error noted should be correctable by the controls, a new belt might bring things closer to what you want - only trying it will establish this.

As for a speed measurement app that gives variation details I suggest the Dr. Feickert Platter Speed. You do need a test disc with a 3.15kHz tone. One may be bought from Dr. Feickert from Germany. The app is now only supported on i-phones and if you take the paid for option the application will calculate and display wow and flutter figures. There is an old free Android version on the web ( not via Playstore) which will give speed stability figures and max/min variations for the test period.

At the end of the day we are dealing with a $50 turntable and performance at the level of what were once called "transcription" turntables should realistically not be expected. It is not just a question of vintage status as true high performance turntables from as far back as the 50's and 60's command much higher prices for a reason.

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Follow Ups Full Thread

Topic - Speed accuracy on vintage belt drive TT with "electronic speed control" - JoshT 23:02:46 01/13/17 (16)

Thanks everyone! Slight update and a question . . . - JoshT 09:14:30 01/14/17 (10)

Final update for now (I promise!) - JoshT 13:34:48 01/14/17 (3)

RE: Final update for now (I promise!) - Travis 17:36:19 01/14/17 (2)

Why? - JoshT 18:59:44 01/14/17 (1)

RE: Why? - Travis 19:40:44 01/14/17 (0)

RE: Thanks everyone! Slight update and a question . . . - Uncle Mike 10:31:47 01/14/17 (5)

LOL! Thank you sir, but I'm more inquiring about reputation . . . - JoshT 13:48:12 01/14/17 (4)

RE: belt quality - rindolini 17:51:02 01/14/17 (1)

Thanks! - JoshT 19:03:18 01/14/17 (0)

RE: LOL! Thank you sir, but I'm more inquiring about reputation . . . - John Elison 15:23:58 01/14/17 (1)

Wow! - JoshT 15:50:59 01/14/17 (0)

RE: Speed accuracy on vintage belt drive TT with "electronic speed control" - Lew 09:00:40 01/14/17 (0)

RE: Speed accuracy on vintage belt drive TT with "electronic speed control" - rindolini 06:03:28 01/14/17 (1)

Regarding your footnote (*) . . . - JoshT 09:01:33 01/14/17 (0)

RE: Speed accuracy on vintage belt drive TT with "electronic speed control" - PAR 01:10:52 01/14/17 (1)

RE: Speed accuracy on vintage belt drive TT with "electronic speed control" - Uncle Mike 03:10:11 01/14/17 (0)

Follow Ups

RE: Speed accuracy on vintage belt drive TT with "electronic speed control" - PAR 01:10:52 01/14/17 (1)

RE: Speed accuracy on vintage belt drive TT with "electronic speed control" - Uncle Mike 03:10:11 01/14/17 (0)

RE: Speed accuracy on vintage belt drive TT with "electronic speed control"

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