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In Reply to: RE: New SP-10 Mk 3? posted by M3 lover on September 15, 2014 at 10:03:50
Time for something newer, sleeker, more modern?
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at my age I find it handy to have some platform to steady my hand when I cue a cut or lift the arm. ;^)
"You can’t know what the “best” is unless you have heard everything, and keep in mind that given individual tastes, there really isn’t any such thing." HP
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
True terror is to wake up one morning and discover that your high school class is running the country.
quote by Kurt Vonnegut
Edits: 09/18/14
Grand Prix Audio might answer these interesting questions of yours. Forward your post to their technical department. See what they have to say?They claim that speed accuracy measurements were done with the stylus down on a test record for "real world" measurements, and on the last page of their "white paper" download they also have this to say:
"Using conventional industry standard tests such NAB, DIN, IEC we cannot define the Rumble or Wow & Flutter of our turntable because the noise level and speed error of the record test groove is well in excess of the turntable itself."
Edits: 09/18/14 09/18/14 09/18/14
I have a friend who has a Monico. He also has a Wave Kinetics. Now THAT is cool.
The Monoco is 20k, the Wave Kinetic is 45k.
I like my Lenco better.
Not kidding.
it's about the music
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