ljgerens
Responses from ljgerens
| Apple lossless as a source You don't mention that you have a preamp. If you don't, for a reasonable priced DAC/preamp with volume control,I would recommend the Emotiva XDA-3 for $699. They do have 10% off your first order. If you want to save some money, a used Emotiva XDA-... | |
| sending signal wireless from Mac to DAC- whats the best way ? AirPort Express, gen 3 Apple TV, WiiM mini or WiiM pro will all work. | |
| The "Very Best Record Cleaning Formulation" @lewm You are correct regarding the effectiveness of distilled or deionized water be itself in the ultrasonic bath. Refer to my post on 06-21-2023 at 4:05pm. i don’t know whether there is a right frequency or wattage but my experiments @ 40 ... | |
| The "Very Best Record Cleaning Formulation" @wizzzard You asked for information about the commercial ultrasonic record cleaners. I am not familiar with any of the commercial ultrasonic record cleaners. I have no experience with any of them and I haven’t researched them. I built my ultraso... | |
| The "Very Best Record Cleaning Formulation" @lewm The analytical techniques that I discussed in my last post were not used on vinyl records. We were discussing the analysis of perfluoropolyethers in the LAST record preservative formulation and how one could determine the chemical compos... | |
| The "Very Best Record Cleaning Formulation" @wizzzard I just read that you requested information from me. I do not know what information you requested. I must have missed it. | |
| The "Very Best Record Cleaning Formulation" @wizzzard I never mentioned using an electron microscope for my analysis of perfluoropolyethers although I have used SEMs and TEMs as supporting techniques for other experiments. The main techniques that I used are Photoelectron Spectroscopy and... | |
| The "Very Best Record Cleaning Formulation" @mijostyn As I stated in a previous post these perfluoropolyether lubricants are typically only a few nanometers thick. Assuming the LAST record preservative is a similar thickness, you would not be able to see it on your slide. | |
| The "Very Best Record Cleaning Formulation" @mijostyn I never stated an opinion regarding the LAST record preservative. I have never used it or analyzed it. I only stated what they claim in their patent and brochure for your information regarding its chemical composition. You stated this ... | |
| The "Very Best Record Cleaning Formulation" @mijostyn I have no association with LAST and I have never used it. I am just posting what I found on one of their patents and one of their brochures at the Consumer Electronics Show (CES) 1982. One of the patents that I found was issued to Wal... | |
| The "Very Best Record Cleaning Formulation" @mijostyn Regarding your use of brake cleaning fluid on records. I have no idea what brake cleaning fluid you used, but I have only seen two types of brake cleaning fluid. Chlorinated which typically contain Perchloroethylene, Methylene Chloride... | |
| The "Very Best Record Cleaning Formulation" lewm posted "Have you identified molecules that elute with IPA? In this regard, is ethanol safer? Thx." @lewm The main additives diffusing to the surface with concentrated alcohols were identified as plasticizers as well as some stabilizers, scav... | |
| The "Very Best Record Cleaning Formulation" @lewm I can’t put a specific number on dilute alcohol solutions but I would think that anything below 25% and exposed for a few minutes should not be a concern. The migration of additives from the bulk to the surface is a common phenomenon in pol... | |
| The "Very Best Record Cleaning Formulation" @lewm Regarding isopropyl alcohol causing damage to vinyl records. My experiments using several surface sensitive analytical techniques have shown that neither isopropanol or ethanol will cause any damage to a vinyl record surface if used in dilut... | |
| The "Very Best Record Cleaning Formulation" I just came upon this thread so I figured I would provide my experience with ultrasonic cleaning of vinyl records. I studied the effect of ultrasonic cleaning of vinyl records back in the late 70s when I built my first ultrasonic record cleaner. ... |