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Sand bags under a cdp - didn't work well

Last night I started the process of vibration control with the use of sand bags (3) under my Arcam cdp. What I found was that while everything became more focused/detailed it also became more sharp/harsh/forward/aggressive. I didn't know what to expect but it certaintly wasn't this. Van Morrison's voice on trk #5 on Sailing to Philadelphia was abnormally aggressive and in the end I preferred the sound without the bags. Any thoughts as to why things became too sharp & aggressive????
rgd

Showing 4 responses by megasam

megasam's avatar
megasam
798 posts
 
CornFB because tube is 12" diameter under most CDP you will not see it. Because you control amount of inflation with hand pump any weight CDP can be accomadated. Put just enough air in tube so CDP feet are just cleared, tube will be very squished. When you touch CDP it should sway easily.
megasam's avatar
megasam
798 posts
 
If you want rich/full/3D sound buy 12" bicycle innertube and partially inflate so tube compresses greatly but clears CDP feet when used under CDP. CDP should sway gently when touched. You can put sandbag on top of CDp to dampen chasis vibration. Heavy mass sand platform under CDP is for use with cones to drain vibration from CDP into sand box like "big rock". Unless you have very warm/bland sounding system cones are not for you.
megasam's avatar
megasam
798 posts
 
Any dept store that has small childrens bicycles will have 12" tubes for $6, you can also get hand air pump for $5, might as well get several tubes to experiment with.....sound effect is similar to vibrapods only better.
megasam's avatar
megasam
798 posts
 
Tube people to maximize benefits of inner tube under CDP, be sure and use torpedo level and make sure CDP is level when sitting on inner tube. If you put dampening weight on top, just shift it around by hand to get perfect level. For tube alone it may have to be located off center under CDP to get perfect level. For a small DAC unit I would go with vibrapods if you want to use sonething to make sound fuller/richer.
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