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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: Finite Rack posted by frequentflyer on June 3, 2007 at 04:02:56:
I have a suspended floor and found that some horizontal isolation improved the performance of my Wadia 861 CD player. My rack system is the Lovan Sovereign, with the legs and horizontal tubes treated to reduce resonances. The shelves have been replaced by beams which are also damped.
This tripod system couples the equipment firmly to the floor and is rigid against horizontal flexing within the rack. On a suspended floor, this couples floor motion to the equipment. Unless the rack is exactly at a center point between supports, the floor motion is one of bending rather than strictly vertical. This means the motion translated to the equipment includes a lot of horizontal as well as vertical displacement.
Since CD players use servo mechanisms to track the lasers along the CDs, horizontal motion at the player creates additional problems for the servo. My solution was to make DIY roller-ball suspension devices and support the CD player directly on the ball bearings. With the weight of the Wadia, this creates a good low-pass filter against horizontal vibration. The only down-side is that the free rocking motion makes it difficult to use the control buttons on the player: I use the remote control exclusively.
Symposium Rollerblock and Finite Elemente Ceraball are finished commercial products that use the same geometry. If you are handy, you can make your own.
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Follow Ups
- Horizontal versus vertical isolation. - Al Sekela 14:36:58 06/03/07 (1)
- Of course....and let's not forget isolation in (3) rotational directions. nt - geoffkait 08:25:28 06/04/07 (0)
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