Mr.Radar
Headphoneus Supremus
- Joined
- Apr 6, 2004
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Quote:
I've always heard it referred to as preemphasis (during the record cutting) and deemphasis (on playback). It exists to reduce surface noise (the high frequencies are boosted to stand-out above the surface noise) and to make the grooves more compact/trackable (it reduces the bass so that the bass grooves are small enough that a decent amount of music can fit on a record and so that the stylus can track the bass without jumping out of the grooves from too much bass). (Also, just to nit-pick, it's done electronically (with low-pass filters or digital equalization) and not electromechanically on all but the cheapest (crystal/ceramic) cartridge types).
Quote:
Yes. Just be sure to keep your stylus clean (I reccomend a stylus brush and Mr. Clean Magic Eraser), in alignment, and be replace it frequently (the standard eliptical stylus should last 300-500 hours, fine-line styli should last 500-800 hours, and more radical shapes can last as long as 1000 to 4000 hours (it depends on the actual shape). (NOTE: All those measurements assume that the stylus is clean, in alignment.) Also, in addition to alignment it is extremely important to get the azimuth right (on my last TT it was off by about 10 degrees and now I'm paying for it) and to make sure that the cartridge is tracking at about the right weight (I reccomend getting a Shure SFG-2 guage, or one of the $50 digital ones on eBay or Audiogon). By "right weight" I mean in the manufacturer's specified range. It is usually better to track heavier than lighter, because a mis-tracking cartridge (one that can't stay firmly seated in the groove, and just because a cartridge isn't skipping doesn't necessarily mean it isn't mistracking) will bounce all around the groove and cause damage to them.
Originally Posted by lini Seems like your understanding of the word "compression" is pretty limited, then (maybe on compression as used in compressor devices for musicians?) - unless you want to nitpick that it should rather be decompression regarding bass on vinyl playback, but I don't think so. Read your own words: If one would understand that as a form of frequency dependent electro-mechanical compression/decompression, I'd regard that as entirely correct. It's not the usual term for audio fans and musicians, but it's surely the right one for computer geeks. And I'm sure you'll find more of the latter on the web... ![]() Greetings from Hannover! Manfred / lini |
I've always heard it referred to as preemphasis (during the record cutting) and deemphasis (on playback). It exists to reduce surface noise (the high frequencies are boosted to stand-out above the surface noise) and to make the grooves more compact/trackable (it reduces the bass so that the bass grooves are small enough that a decent amount of music can fit on a record and so that the stylus can track the bass without jumping out of the grooves from too much bass). (Also, just to nit-pick, it's done electronically (with low-pass filters or digital equalization) and not electromechanically on all but the cheapest (crystal/ceramic) cartridge types).
Quote:
Originally Posted by lini GuffMorgan: In general, a well cared for record might very well outlast the original owner. As for the number of playbacks without impact on the sound, I'd say, if the equipment is good, a good record can be played back more often than one would ever want to listen to it. Greetings from Hannover! Manfred / lini |
Yes. Just be sure to keep your stylus clean (I reccomend a stylus brush and Mr. Clean Magic Eraser), in alignment, and be replace it frequently (the standard eliptical stylus should last 300-500 hours, fine-line styli should last 500-800 hours, and more radical shapes can last as long as 1000 to 4000 hours (it depends on the actual shape). (NOTE: All those measurements assume that the stylus is clean, in alignment.) Also, in addition to alignment it is extremely important to get the azimuth right (on my last TT it was off by about 10 degrees and now I'm paying for it) and to make sure that the cartridge is tracking at about the right weight (I reccomend getting a Shure SFG-2 guage, or one of the $50 digital ones on eBay or Audiogon). By "right weight" I mean in the manufacturer's specified range. It is usually better to track heavier than lighter, because a mis-tracking cartridge (one that can't stay firmly seated in the groove, and just because a cartridge isn't skipping doesn't necessarily mean it isn't mistracking) will bounce all around the groove and cause damage to them.