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Ultrasonic cleaning with kirmuss and loss of high frequency details.

I just purchased the kirmuss US machine and diligently followed their instructions to cycle through minimum 3 cleanings of 5 min each with their surfactant applied each time. Upon testing my favorite vinyl and critically listening through my headphones I am convinced I’ve lost high frequency details. My background is completely silent and ticks and pops have been reduced by 95% or more. So cleaning wise it did the job. Anyone here ever experience loss of high frequency detail after repeated US cleaning? Now I’m worried I permanently damaged my favorite vinyl somehow. Please let me know, thx.
tubelvr1
genesis168's avatar
genesis168
412 posts
 
I use Bose noise cancelling headphones when I do cleaning. The vac machine and the US machine are both very irritating and noisy
lewm
13,442 posts
 
Bose, the enemy of SQ and truth in advertising.
terry9
2,354 posts
 
@lewm 

105 dB at US frequencies. It's only a bit noisy at the 80 KHz setting, while irritating at 37. Still, nowhere near 105.
genesis168's avatar
genesis168
412 posts
 
Bose NC headphones cancelled everything out. Nice and quiet cleaning session. 
tomic601's avatar
tomic601
13,153 posts
 
Are we sure the Bose can generate an out of phase US signal at the record cleaning machine frequency?

interesting !

cool thread

no reply on the test record test tells much...

that was IMO the right approach 
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