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In Reply to: RE: Humminguru ultrasonic cleaner posted by flood2 on December 1, 2021 at 12:07:45:
The original commercial ultrasonic RCM, the Glass Audiodesk, also uses a low powered transducer though whether or not it is comparable to the Humminguru I do not know as details are hard to find. Herr Glass is clear about his choice. After many experiments he found that low power provides the best combination of efficacy and safety when cleaning discs.
On the question of safety I do recall Harry Weisfeld (VPI) posting right here some years ago when he was experimenting with an ultrasonic cleaner (for his own purposes I understand - it does not seem to have been a VPI prototype). Using a high power transducer he posted that he was concerned at the black sludge he found at the bottom of the tank and that he felt that after such cleaning some high frequencies were missing. All anecdotal of course. I remain happy with my low powered Audiodesk.
It is the likely robustness of the Hummingguru that is my particular concern, The video clip that was linked on the original post here indicated that the small water tank needed to be removed and refilled frequently ( every disc?). I just don't see what looks like a styrene moulding holding up to the cleaning of a reasonably extensive record collection e.g at minimum several hundred to make the purchase economically viable IMO.
"We need less, but better" - Dieter Rams
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- RE: Humminguru ultrasonic cleaner - PAR 12/1/2115:30:37 12/1/21 (0)