BTW on the LP description "demagnetizing" is in quotes. You should look over the disc, there really isn't anything to make you think it's anything but extremely serious since more than half of it requires an oscilloscope and IMD meter (some can be done with DMM, not much though). It wasn't made by guys that don't know what they're talking about, making stuff up. I think it's well beyond the average person who owns a TT.
Hmm. How do they get around the noise of the boiling nitrogen?
In quotes? Seems like they want people to infer that there is actual demagnetizing going on when there is not. Most consumers know that magnetic fields are involved, so that is the most convenient word to use. I suspect however, that there is insufficient energy transferred from the vinyl to the cantilever to cause demagnetization.
John
I ordered one, don't suppose there are any details of the "demagnetization" mechanism? The long term average spectrum of music is pinkish, don't see how a few minutes of noise would help after hours of various other tunes.
Scott I hope you will be doing measurements for us. Before, during, after.
Sure but right now all I have is a Grado Black (my G. reference's cantilever collapsed) and a Denon Dl-103R. If they are acceptable I have scopes, etc. to take the data.
I assure you all, I was wondering if it would do something too until I heard the big change in SPL of the first track, and Adele sounded considerably more clear after. I thought the quotations meant that the people who made it also knew that demagnetizing could be a psuedo-term for what's really happening.
Bill there's no instructions to use a scope on those tracks.
Bill there's no instructions to use a scope on those tracks.
Please make it clear exactly what I should document and I will gladly donate some of my time to this. The Denon is new in box with 0 hours on it and I will simply tune it in my arm for 10Hz and use the LP as intended to set it up, so we could even test the run in theory.
Scott I hope you will be doing measurements for us. Before, during, after.
And record the whole process in video, upload to youtube
I have a Dennison Soundtractor and a Geo Disk already. John Dennison, now there was another character.
And record the whole process in video, upload to youtube
No, but I was tempted to buy two and try the wet/dry experiments at the same time.
More useful than a YouTube video from a cell phone would be a digital recording beginning to end of the whole process. It would be easy then to go back and check for real differences. A high quality ADC would help but if its as obvious as claimed the internal sound card on a PC (older one, current practice is mono only) would be more than good enough to capture the differences in level, frequency response noise?? etc. Even Michael Fremer uses digital recording to demo the differences in phono cartridges.
Have a gander here, Chris. As much as I'm not really a vinyl user at all, I really find the discussion interesting.
http://www.diyaudio.com/forums/anal...surface-noise-i-want-know-all-approaches.html
Demian, the best feedback would be from Dave Fletcher, founder of Sumiko, importer of a number of MC cartridges, including Supex, Fidelity Research, and a number of others. Sumiko made and sold one of these cartridge degaussers. I'm pretty sure it is the one that I have in my closet. I think that he is in retirement somewhere in Nevada, maybe Carson City. You should ask him about it, and whether it did anything or not.
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