Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 alpha 4/15/85; site amdcad.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!amdcad!phil From: phil@amdcad.UUCP (Phil Ngai) Newsgroups: net.audio Subject: Re: LP easier to listen to at concert levels Message-ID: <1580@amdcad.UUCP> Date: Tue, 11-Jun-85 01:05:17 EDT Article-I.D.: amdcad.1580 Posted: Tue Jun 11 01:05:17 1985 Date-Received: Tue, 11-Jun-85 08:38:16 EDT References: <141@utflis.UUCP> <301@moncol.UUCP> <494@edison.UUCP> Reply-To: phil@amdcad.UUCP (Phil Ngai) Organization: AMD, Sunnyvale, California Lines: 26 In article <11256@brl-tgr.ARPA> ron@brl-tgr.ARPA (Ron Natalie ) writes: > >> I seem to remember that the laser, when it goes bad, just stops >> working. There is no wearing out of it. It works at 100%, one minute, >> then not at all the next. This is as opposed to a stylus which wears > >Not so. As those around here can attest to, it goes unreliable. Sometimes >it will play a disk, sometimes not. Usually, there are certain disks that >it won't play, while others it will. A recent issue of "The Bell Labs Technical Journal" was on the proposed new fiber optic transatlantic cable (TAT-8) and among other things they discussed failure modes in optical electronic devices. I don't recall exactly which was which but I believe laser diodes degraded while photo-detectors failed suddenly. Their goal was to have to repair the cable only three times in twenty years. The owner of a CD player, of course, doesn't care if it is the laser or the photo-detector that has failed. -- A man could get elected President by promising to put the phone company back together. Phil Ngai (408) 749-5720 UUCP: {ucbvax,decwrl,ihnp4,allegra}!amdcad!phil ARPA: amdcad!phil@decwrl.ARPA