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Headphone Heights Welcome to Headphone Heights, the place for all your ear bud discussion |
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Headphone Heights Welcome to Headphone Heights, the place for all your ear bud discussion |
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In Reply to: RE: The HP-1's were AWESOME. posted by genungo on August 19, 2011 at 21:10:19:
I have some experiece with them (*HP1/YH1)The ceramic magnets which are the "bread" of the moving magnetic assembly (diaphram/"meat") will weaken over time, making these phones horrible inefficient. (Magnets becoming demagnitized) To re-entergize the magnets, you need to run around 3W (3 watts!) through them for 24 hours. Pink or white noise is fine. No worries, they have a TEN WATT power rating! After 24 hours, if you had experienced "weak and in-efficient" HP1/YH1 phones, they will be back to close to full power again.
As far fetched as this sounds, I have done this to more than 10 sets and it always works.
*Erroneous story alert....
This was told to me by my dealer back in the 70's. I bought a new set of HP1's and was so "in love with them" that I went back to get another set a year later. The dealer told me that their are no more HP1's because "Hewlett-Packard" had things to say about the letters HP being used as the model number! (HP= HEAD PHONES (duh) So Yamaha chose to begin calling the same units YH for "Yamaha Headphones" and supposed to have satisfied the legal department of HP. Same for the HP1,2,3 called later YH1,2,3.
This could all be horsesh!t as well but it was a tale I remembered. Reserving my responsability for it being false if it is--
Edits: 08/19/11 08/19/11 50/22/01 50/22/01 50/22/01 50/22/01
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Follow Ups
- Some info - Iron Knee 22:49:04 08/19/11 (2)
- Good info - genungo 07:34:40 08/20/11 (1)
- RE: Good info - Iron Knee 07:49:03 08/20/11 (0)
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