Ultrasonic Record Cleaner 40 v 80 v 120 kHz

@jwr159 I am a long term user of Vinyl as a Source Material.

I am today a total advocate of the Manual Cleaning method supplied in Neil Antins PAVCR shown in the Link in earlier posts.

I am not going into the ’vs-this -- vs that’ debate.

Using the Guidance in the Document for Manual Cleaning combined with a 'few tips' from others contributing in another thread, along with my own teaks to the method. The Manual Cleaning Method has left myself with Vinyl LP’s that I now Class after having owned for 40ish years as being ’ PURIFIED’.

I am actually convinced the PURIFIED is an audible quality able to be detected

I now clean Albums that are Brand New Purchases and know what an improvement that is to be had on some.

Following Neil’s Guidance in the Document will achieve identical results, the tweaks referred to are really methods used for the applications of the Solutions and Rinse Methods.

As for a Tweak, I use a modified Lazy Susan to mount the LP, this is positioned over the Kitchen Sink. I also use Different Coloured Baby Scalp Brushes, for the different treatments for the solutions to be applied. A bowl is used as a DW rinse bowl for each of the coloured brushes, where I dip the brush clean, prior to each new solution to be brush treated when applied, this is a measure to improve on avoiding cross contamination. It suits my way of thinking this one as a practice.

I also use a Horticultural Gardeners Pump Up Pressurised Bottle for all DW rinses of the Vinyl LP. Again select the preferred Nozzle Setting and Jet Power Rinse the LP, totally suit my way of thinking.

Back to Neil’s Guidance, on old Vinyl Albums, I found the White Vinegar Treatment created an Album that had the edge in quietness.

More Important, when familiarised and organised, if the Space is available, 10 Albums are easily able to be cleaned in a Hour, with the first Three to Four Albums being ready to be replayed or put into the sleeve within 30 minutes of the cleaning having occurred.

@jwr159, 

If you read the book, Chapter XIV XIV.4 Record Spacing, and XIV.6
Record Rotation Speed you should realize that they are spinning too many records too fast.  Otherwise, the 4875 tank is 40-kHz and 160W while the CS6.1 is 48-kHz and I believe only 80W power - I did a quick review here iSonic CS6.1-PRO ultrasonic record cleaner | What's Best Audio and Video Forum. The Best High End Audio Forum on the planet! (whatsbestforum.com)

Well, thanks again everyone, all great info. 

I should mention that I did purchase the Gem Dandy hydraulic cleaning machine. It is inexpensive and at least according to George Merril, it works well, as good as US. 

I was also considering the CS6.1 Pro. I figured after hydraulically washing 10 records, I would give them a second US cleaning, rinse and then spin dry. But based on the comments and a review by Fremer, it seems that iSonic is not really an US machine. 

I am starting to think the best option for US is a basic Vevor $200 cleaner. The unit has 180W of power. After US cleaning, I can use the Merril for a 2nd cleaning and rinse.  

Had an Audiodesk rcm  the year it came out. After about 100 records, the pump broke and it could not be sent back for repair. So I received a discount (not very much) on a new  improved Audio Desk. When that pump broke, I was utterly disgusted having spent about $7,500 on the two machines. I switched to the current KL Audio with which I am very satisfied. Bonus--if it breaks, I can have it repaired in the U.S. 

@jwr159, 

Be advised that inexpensive UT tanks like the Vevor can be very noisy; enough to drive you out of the room or wear hearing protection.  Also, you will want to buy new power supply that can slow down the motor such as  Amazon.com: Belker 36W 3V 4.5V 5V 6V 7.5V 9V 12V Adjustable Voltage Universal AC/DC Adapter Power Supply for Household Electronics Security Camera Router LED Strip Light Keyboard Tablet - 3A 3000mA Max. : Electronics.  

You can add a filter that can extend the bath life for not too much money - Amazon.com: iSonic 1 Micron in-Water Filter for P4875II+MVR, P4875II-4T-NH+MVR or P4875-NH+MVR : Industrial & Scientific.  You will have to adapt it to the Vevor. 

If you can keep the bath clean, you then monitor the bath with a TDS meter.  They are available for <$15 but they are generally not very accurate at low levels with this being the lowest accurate unit I have found - Amazon.com: HM Digital 716160 COM-100 Waterproof Professional Series Combo Meter, 7", White/Purple : Industrial & Scientific.  You refresh the bath when it reads 5-10 ppm.

Or, pre-clean with Merril unit and then final clean/dry with the HG HumminGuru Ultrasonic Vinyl Record Cleaner | RCM | Recording Cleaning Machine; see the manual here HumminGuru Owner's Manual.  The HG only uses 400-ml of DIW and you just replace about every 6- records.  FYI, the general consensus is that the new more expensive HG-Nova adds some convenience, but it cleans no better.    

Good Luck,