Pursuant to mijostyn's concern about an "oscillating magnetic device" under his LOMC, I do believe in fact that in some designs one can hear an issue, faintly. I have guessed that EMI from the motor may be in fact what some claim to be caused by "cogging". Coreless motors are much less prone to generate this interference, based on my listening to several different brands and models in my own home system, but still, I am guessing. If you read the L07D website, you will see that some have recommended adding some shielding under the platter to ameliorate a faint glaze with the L07D. It's not actually a problem you can hear; it's more like a problem you did not know you had, until you eliminate it. That was my experience when I added an extra bit of shielding between the motor and the underside of the platter on my L07D, per recommendations on the website. Paradoxically, the L07D uses a coreless motor. It also comes with a thick stainless steel platter sheet, which I am guessing was meant to function as a shield. The Technics SP10 Mk3, on the other hand, while it does have a massive iron core motor compared to others, has no issue I can hear. Possibly because it already has a massive and thick platter assembly that does a good job also as a shield. My old Mk2 definitely did have a kind of gray-ish coloration (two samples over 5 years or so in my home system) which could have been due either to EMI from the motor or from.... So, for any particular model of DD, there is either no problem or there is a simple and inexpensive solution to it. The trade-off in speed constancy is to my ears well worth it.
While we're at it, the Lenco idler design places a big motor under the platter as well. I guess the Garrard does to. In any case, I hear no such issue with my much modified Lenco. I would characterize its "sound" in much the same way as Mike L characterized the Saskia, albeit the Saskia is a Lenco on steroids and surely does everything better.
While we're at it, the Lenco idler design places a big motor under the platter as well. I guess the Garrard does to. In any case, I hear no such issue with my much modified Lenco. I would characterize its "sound" in much the same way as Mike L characterized the Saskia, albeit the Saskia is a Lenco on steroids and surely does everything better.