Although,I wasn't trying, but left 2 different but brand new lps in my 40hz cleaner @ 45C for 45 minutes with my spinner off. When I realized it after those complete cycles, I put them through the exact same cycle with the spinner on, then listened. I heard nothing that concerned me.
A History of Ultrasonic Record Cleaning
Given all of the attention to ultrasonic cleaning of LPs, made more accessible by DIY, there’s been surprisingly little written about the history of ultrasonic record cleaning. Mike Bodell changes that with a piece I just published entitled “The Curious Case Of Record Cleaning In The Quest For Sonic Perfection," which you can find here:
https://thevinylpress.com/the-curious-case-of-record-cleaning-in-the-quest-for-sonic-perfection/
Mike found an old patent that directly addresses the subject, and puts the development of various cleaning approaches into historical context. I think you’ll find it a worthwhile addition to the literature and an enjoyable read.
https://thevinylpress.com/the-curious-case-of-record-cleaning-in-the-quest-for-sonic-perfection/
Mike found an old patent that directly addresses the subject, and puts the development of various cleaning approaches into historical context. I think you’ll find it a worthwhile addition to the literature and an enjoyable read.