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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: RE: More likely scenario? posted by rick_m on April 26, 2010 at 08:57:00:
You remembered! And yes I still use that tweak, although you have to be very careful not to drip any ferrofluid into the laser lens assembly. There is no way beyond destruction to clean off that silicone fluid base.
The use of the ferrofluid and the subsequent performance increase did indicate issues with the focus motor circuit. However,it seems to me no one ever spent much time on that portion of a CD/optical reader interface. A glance at the laser assembly while playing a disc certainly reveals the lens in almost continuous motion, and since the focus mechanism employs a feedback sensor and circuit, it is always an after the fact correction. That brings to mind a thought: perhaps those ultra high priced glass CDs sound better because the surfaces are also flatter than the plastic discs? Maybe there is simply less error correction.
Also the nature of the laser light involved has changed over the years. The emergence of the rerecordable CD means that the contrast of the data surface is significantly reduced in respect to the original stamped CDs. I do not know if sensitivity of the reader was simply increased or perhaps the laser output was increased.
Stu
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Follow Ups
- Hey! - unclestu 13:06:05 04/26/10 (1)
- RE: Hey! - rick_m 07:59:05 04/28/10 (0)
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