simpleton Posted January 8, 2016 Share Posted January 8, 2016 I have recently purchased (not yet received) a medium speed msuper. After placing the order I watched a few more youtube videos on it and I suffered from sustained buyers remorse. That scream it makes is horrendous. Some videos it is hardly noticable, others it seems terrible and can be heard from a significant distance away. Why is that? Do versions with different motor windings make more or less noise? I really think it will drive me crazy. I love the idea that these (EUC) devices are near silent. A 6.3kHz scream from the pwm carrier frequency is inexcusable in this day and age of modern electronics. I can only assume they did it because they have cheap FET drivers that cant drive the gates hard enough to run at speed. I should have it next week, I really think it will be a difficult issue for me to look past. This is not a cheap unit, why would they do this?? Link to comment Share on other sites More sharing options...
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