terry9
Responses from terry9
| Checking azimuth with a DMM or scope, please advise I have used electronic devices to adjust azimuth, but they simply don't work as well as my ears. Invest in a good torque screwdriver, though. YMMV | |
| Linear Tracker ...I was wondering I have two Trans-Fi Terminator tonearms. One on a modified Nottingham Analogue Mentor (Dais bearing, aluminum sandwich plinth, and premium power supply), the other a DIY air bearing job using aerospace components. Cartridges are Miyajima Zero and ... | |
| Pass Labs XA-25 on all the time? The only reason to turn off a SS amp is heat. If it gets too hot, the big caps will age prematurely. I use a separate power supply in another room, so it's not a problem. I use the Class A amps as auxiliary space heaters, so it's cost neutral. | |
| Thumbs up for ultrasonic record cleaning @antinn Thanks Neil! | |
| Thumbs up for ultrasonic record cleaning @antinn Not cheap - how true! But the specs looked good, formulated for plastics, and it was recommended by Fisher, so ... In any case, a better bet than Audio Snake Oil Formula 6 at $99/l. Too bad I didn't know an expert to ask before now.IIRC -... | |
| If I have good local shops available, should I restrict my purchasing? Buy where you shop. As @tvad said. | |
| Thumbs up for ultrasonic record cleaning @antinn So good to have a technical conversation free of snake-oil. Thanks!I was wondering about your step 1: a fresh, low concentration bath for each cleaning session. I use 80KHz near the maximum temperature for vinyl (45C), at a 2.5% solution o... | |
| Thumbs up for ultrasonic record cleaning Thanks Neil! | |
| Thumbs up for ultrasonic record cleaning @antinn Hello R/Neil. Thank you for the long response. Much appreciated.My filtration system gets me down to 30ppm of dissolved solids. I use that for rinsing before the distilled bath. Two questions:1) Is 30ppm low enough to use for cleaning? (ha... | |
| Thumbs up for ultrasonic record cleaning @antinn Thanks for your expert contribution.@jtimothya What I do to gauge results is clean 50 records to the lower standard, allow chemistry to settle overnight, drain drop by drop, and note (e.g. photograph) the solids deposited on the bottom of ... | |
| Thumbs up for ultrasonic record cleaning @antinn Thank you! That explains why power per record a relevant parameter. If I had ever known that, I had forgotten. Just like I had forgotten some of the basics (i.e. how cavitation bubbles form). | |
| Thumbs up for ultrasonic record cleaning Machine is a rebranded ElmaSonic P60H (Fisher Scientific). My thinking was that Fisher is a lab supply company, and so the machine would have to pass two levels of QC. Still going strong after 6000 records, plus misc cleaning chores. Works wonders... | |
| Thumbs up for ultrasonic record cleaning @jtimothya Your example of particle size is unconvincing to me. A ’visible glop’ is made up of tiny particles which can be broken loose by US action, and then either deposited as solids or taken into solution as solutes, or perhaps even suspended.... | |
| Thumbs up for ultrasonic record cleaning I also see that you are cleaning 6 records at a time, which means a spacing of at most 33mm. That spacing is OK for 80KHz, about 1.7 wavelengths, but, at less than a wavelength, that spacing is quite inadequate for 37KHz. Also, with 6 records your... | |
| Thumbs up for ultrasonic record cleaning Thank you for the references, which mainly point out that there is very little formal research on US cleaning, beyond the obvious and the theoretical. Let me give you another reference: the Rushton thread (2016) here on Audiogon, to which I contri... |