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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: Audio Research CD7 factory tweaks posted by sir tweaks a lot on August 20, 2007 at 13:39:32:
EAR Isodamp SD-125 and SD-40 adhesive semi-rigid damping sheets, available from Michael Percy (www.percyaudio.com). This tough PVC-based material damps micro-vibration in component chasses and electronic parts much more effectively than the above mastic/bitumen based sheets. The sonic effectiveness is greater because these sheets utilize mostly the principle of constrained-layer damping, where vibrational energy is dissipated as heat in the horizontal (shear) deformation of the adhesive between the vibrating wall and the horizontally rigid damping sheet. Viscoelastic materials such as the sheets described in (1) above less efficiently dissipate vibrational energy mainly in the compression and expansion of the material. The sonic effectiveness of this material is better also because its stiffness is a better mechanical impedance match to chassis walls. The thinner type (SD-40) is best stacked in 5-9 layers, SD-125 in 3-5 layers. Use of patches of this material on even one component will improve clarity considerably in a good system.
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Follow Ups
- My guess is it could be this.... - mitch2 18:25:35 08/20/07 (1)
- RE: My guess is it could be this.... - sir tweaks alot 13:40:22 08/21/07 (0)
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