We can compare notes. Been using that system for a while now. What cleaning solution you planning to use?
After looking at a bunch of threads I am going to start with distilled water with just a little of a isopropyl alcohol mixed with Triton-X (turgitol). Similar to what I use with my VPI RCM but at an even lower concentration. The trick seems to be to do an RCM cleaning first, then USC, then a vacuum dry with the RCM.
I just got it setup this afternoon and the initial results are impressive. I may be near the holy the grail of record cleaning?
I'm using the solution/strategy described by Rushton Paul. positive-feedback.com/audio-discourse/rushton-paul-diy-approach-ultrasonic-cleaning-lps/ The most notable exception being I don’t always use the ETOH final rinse he recommends on the RCM (I use a VPI MW-1), instead ending with a dH20 rinse. I don’t use the VPI prior to the UC since most of the records I’m cleaning are not terribly dirty (the majority are either new or have been in my collection for a long time and have been well cared for). For records I buy used I often clean them with a Spin Clean prior to the US/VPI regimen.
I agree that the results are impressive. Am I (are we) near the holy grail of record cleaning? So hard to say, I’m not sure I would recognize that if I did reach it. I can say that the addition of the UC has made a number of records that once made me cringe in spots very listenable and does seem to make some improvement in everything I have used it on (save new records - since I never play them prior to UC).
I have performed USC on thousands of LPs using an Elma P 60H (German) sonicator and Vinyl Stack (pictured above). Most of my LPs are older recordings (1950s to 1980s) and I am very pleased with the results.
My USC cleaning involves 3 steps, using both 34k and 80k modes. Starting at ambient, the temp rises throughout the process (usually 15 C, or so). I have never had a record warp below 45 C. In winter, the final temp seldom reaches 40 C. That said, one day I accidentally set the internal-temp at 60 C, which made very nice 'art' out of three LPs :-).
I also employ a pre-USC Spin-Clean step and a post-USC Spin-Clean process (wash, tap-rinse, dH2O rinse). This works well.