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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: Damping the Foating CDP Laser-Track Tray posted by Awe-d-o-file on February 20, 2015 at 09:24:03:
ET,
Please accept my sincere apologies for a misspelled, mis-titled and incomplete posting made when distracted.
In the case of the case of Denon CDP/DVD 2910, the suspended tray holds both the 2.75" long laser-track and the shaft mechanism that rotates the CD at high speed (not perhaps self-evident from the original posted image). The use of suspension ensures only that this tray becomes an island of vibration whose impact on the unit's four circuit boards has been minimized. So the suspended tray is holding the shaft that rotates the CD against the free-spinning center in the unit cover together with the tracking laser-reader.
When the side-loading CD tray closes, the angled suspended-tray levels itself, the shaft pushes the center of the CD up against the free-spinning magnetic top in the aluminum cover, the high-speed rotation begins, the red laser reads through its green lens top and the amount of vibration on the suspended tray reflects the lack of complete CD circularity that not even beveling and use of a Marigo Audio Ultima Signature Mat can achieve. Damping the vibration on the suspended-tray provides more nearly constant timing over the whole disk when power calls for laser re-read positioning are at a minimum and interfering least with other unit processing activities. At least that's my understanding and the result is deeper bass, more natural musical tone, mid-range and treble notes firm, well-defined without audible fragmentation.
Interestingly placing rope caulk directly under the rotating mechanism (where there is no motion) does not produce good sound whereas adding rope caulk around the spinning center inside and on the top of the CD unit cover does contribute positively. All told the improvement in sound quality for $3.79 of Rope Caulk is both unexpected and substantial for this Denon. Fully appreciate that others with more expensive CDPs manufactured to higher performance standards may get less benefit.
DG
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Follow Ups
- RE: Damping the Foating CDP Laser-Track Tray - Dryginger2 16:09:31 02/20/15 (0)
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