interesting table....

interesting claims :). no specs for rumble? Interesting. Is the speed stability actually measured or just calculated? AFAIK there is no test record with that kind of accuracy. Very few records are centered within 0.1 mm and almost none at the level of, 0.03 mm or less. Moreover, spindle-hole looseness generates ambiguities that are often on the order of a tenth of a millimeter, varying with how you put the record on. Better than 0.1 mm centering is needed to meet nominal ± 0.1 percent wow threshold. (Precisely, at 75 mm groove radius, ±0.1 percent wow corresponds to .075 mm centering.) To measure ±0.01% wow and flutter you need a record that is centered within 0.0075 mm, and to measure ±0.002% you need one that is centered 0.0015 mm. OK you could say, move it out to 150 mm and the centering requirement is only half stringent ; you still need the record to be centered to within 0.003 mm. With that, you are within the resolution of fine machining, a bit over 1/10000th of an inch :). Doubt that you could get the test record on and off the spindle with that kind of tolerance without an arbor press and bearing pull.

Still would be nice to hear how it sounds :)

dee
;-D

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Follow Ups Full Thread

Topic - Technics should rethink the discontinued 1200... New direct drives out of Japan - - Waxxy 19:42:30 09/14/14 (26)

RE: Technics should rethink the discontinued 1200... New direct drives out of Japan - - middleground 09:56:49 09/16/14 (6)

could or should? - Penguin 10:26:45 09/16/14 (5)

RE: could or should? - middleground 16:18:42 09/16/14 (4)

Where do you get your numbers :)? - Penguin 16:47:22 09/16/14 (3)

RE: Where do you get your numbers :)? - middleground 18:32:05 09/16/14 (2)

OK :) ~ - Penguin 18:56:32 09/16/14 (1)

RE: OK :) ~ - middleground 04:06:58 09/17/14 (0)

RE: Technics should rethink the discontinued 1200... New direct drives out of Japan - - hahax@verizon.net 18:34:41 09/15/14 (0)

RE: Technics should rethink the discontinued 1200... New direct drives out of Japan - - afro18 05:05:34 09/15/14 (0)

RE: Technics should rethink the discontinued 1200... New direct drives out of Japan - - skriefal 21:47:16 09/14/14 (2)

RE: Technics should rethink the discontinued 1200... New direct drives out of Japan - - Waxxy 22:29:11 09/14/14 (1)

RE: Technics should rethink the discontinued 1200... New direct drives out of Japan - - skriefal 06:50:31 09/15/14 (0)

I'd also like to see them revive the SL-1600 Mk-II. - Mr. Dick Hertz 20:43:10 09/14/14 (13)

if we talking resurrection - Penguin 06:40:30 09/15/14 (12)

New SP-10 Mk 3? - M3 lover 10:03:50 09/15/14 (9)

I doubt that the new SL1200 would be cheap either - richardl 10:58:22 09/18/14 (0)

If I had that much money to blow, I might buy the Grand Prix Audio Monaco 1.5... - genungo 12:49:07 09/17/14 (4)

Looks modern and cool, but - M3 lover 10:44:12 09/18/14 (0)

interesting table.... - Penguin 05:01:17 09/18/14 (2)

RE: interesting claims.... - genungo 06:49:40 09/18/14 (1)

RE: interesting claims.... - countertenor 18:20:23 09/22/14 (0)

RE: New SP-10 Mk 3? - Penguin 15:46:00 09/15/14 (2)

RE: New SP-10 Mk 3? - middleground 10:00:35 09/16/14 (1)

remember the SP 10 MK 3 was - Penguin 10:22:40 09/16/14 (0)

RE: if we talking resurrection - majick47 09:28:54 09/15/14 (1)

does not have to be cheap - Penguin 15:51:16 09/15/14 (0)

Follow Ups

interesting table.... - Penguin 05:01:17 09/18/14 (2)

RE: interesting claims.... - genungo 06:49:40 09/18/14 (1)

RE: interesting claims.... - countertenor 18:20:23 09/22/14 (0)

interesting table....

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