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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: Damping the Foating CDP Laser-Track Tray posted by Dryginger2 on February 18, 2015 at 16:34:22:
One of the issues of optical payback is the correction circuit. The laser lens needs to move up and down, and side to side to track the "groove". If the movement is warranted the sled motor becomes involved, too and it is this movement which affects the playback circuitry, in the sense that the more the correction circuit is involved the ore the sound becomes.
One issue is that the correction circuit is a feedback system. IT becomes involved when an error is sensed. There is always a slight delay for it to "kick in."
Modern error correction circuits are mounted on a single IC chip and pretty much standardized. I have actually added ferro fluid to the correction motors (around the laser lens) and that has had the effect speeding up the correction motor speed: adding dynamics an detail.
CAREFUL. practice on an old machine first. Spilling the fluid will ruin the lens assembly, and you need also to balance the amount on the various motor coils or else the correction circuit will move assymetrially and NOT focus properly.
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Follow Ups
- RE: Damping the Foating CDP Laser-Track Tray - unclestu 15:30:10 02/20/15 (14)
- RE: Damping the Foating CDP Laser-Track Tray - Dryginger2 17:07:24 02/20/15 (13)
- RE: Damping the Foating CDP Laser-Track Tray - unclestu 20:19:46 02/20/15 (12)
- RE: Damping the Foating CDP Laser-Track Tray - fastcat 10:48:12 02/21/15 (9)
- RE: Damping the Foating CDP Laser-Track Tray - Dryginger2 18:26:57 02/21/15 (3)
- not sure if we're talking the same thing - unclestu 11:55:59 02/22/15 (2)
- RE: not sure if we're talking the same thing - Dryginger2 17:31:18 03/13/15 (0)
- RE: not sure if we're talking the same thing - Dryginger2 13:09:50 02/22/15 (0)
- RE: Damping the Foating CDP Laser-Track Tray - unclestu 13:46:22 02/21/15 (4)
- To Unclestu about the ferro fluid tweak - fastcat 15:23:14 02/22/15 (3)
- RE: To Unclestu about the ferro fluid tweak - unclestu 16:08:24 02/22/15 (2)
- Some photos - unclestu 12:18:53 02/25/15 (1)
- RE: Some photos - fantja 07:48:00 03/02/15 (0)
- RE: Damping the Foating CDP Laser-Track Tray - fantja 06:13:28 02/21/15 (0)
- RE: Damping the Foating CDP Laser-Track Tray - Dryginger2 22:23:22 02/20/15 (0)
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