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In Reply to: My Technics DD experience posted by daviddeep on July 5, 2005 at 20:48:36:
The Technics SL1500 does not use any feedback from a sensor reading the platter for maintaining the correct speed, so the hunting effect cannot occur with the SL1500.For these turntables the speed was set using a couple of dials (potentiometers) mounted on the top of the turntable, and these potentiometers could suffer over the years leading to a somewhat unsteady speed for the platter.
The SL1500mkII had a quartz locked motor, so this version could theoretically suffer from the so called "hunting" effect.
The SP10mkII also features a quartz locked, an therefore is likely to suffer from the so called "hunting" effect.
However, considering the moment of inertia of a turntable platter and the very small variation in torque produced by the friction between the stylus for loud passages and silent passages, I would say that the hunting effect is a theoretical concern only (ie not detectable to the human ear)
Best regards,
Follow Ups:
I did not know the SL-1500 had no speed sensing capability. Whatever the cause of the speed stability issues with my table, they were minor enough to not be detectable when viewing the strobe indicator, but were frequently audible. I mistook this phenomenon for the so-called "huntiness" I've seen described here by other inmates. As I mentioned, cleaning the speed control knobs helped somewhat, but did not alleviate the problem. Maybe they need to be replaced.
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