Best building material for vibration free shelving


I am building some built into the wall shelves for my VPI Classic 2 SE turntable, amp, preamp, CD player, and old Burwen TNE 7000A transient noise eliminator (that’s one for you old-timers to remember), as well as my DISH Network receiver box. The shelves must match in appearance the typical looking built-in wood bookshelves already in the room. The shelves will be located directly under my 45" wide flat screen television. They will be wide enough to hold two components side by side, other than the VPI turntable which will have the top shelve to itself due to its extra width. I will be building the shelves high and deep to allow for plenty of air circulation around the components. They will be painted.

My question is, what materials might you suggest building the shelves with to minimize vibration? If they were for books I’d normally build the sides, and top out of 3/4" birch sided plywood, the back out of 1/4 inch luan plywood, and the shelves out of oak to deal with the weight of the books without bending. I will be adding vibration damping feet under each component and am not looking for suggestions along those lines, only material and perhaps design recommendations to reduce vibration.

I was researching this last night online and on site, and saw recommendations to use four thicknesses of 3/4 inch High Density (HD) MDF, also to use granite or marble under the turntable, among other recommendations. I was wondering how birch veneered plywood would work too, as it’s ply’s, I believe, have their grains running in opposite directions. Maybe there’s some way to isolate the uprights from the horizontal shelves to reduce vibration transmission.

What would you think would work best for these built-ins. I’d appreciate any recommendations you have or your experience on this subject. Thank you for any ideas.

Mike


skyscraper

Showing 11 responses by boxer12

Hey Slaw,
Yes planning that the TT will be located between the speakers & on top of the rack. 
Thanks
Slaw,
My listening room is in the basement so it will be sitting on concrete with slate tile. Yes, I would love to hear your suggestions.
Slaw,
It sounds like we both do the same. I have a small machine shop in my basement along with wood cutting saws, etc. I'm designing a rack to build using aluminum, brass, & ceramic. Probably won't be done for a while, LOL. The platform for the table will be like what bdp24 described except three layers of the .750 12 ply birch instead of two. (My table is very heavy. I made it out of 4" solid aluminum with a 2" solid plinth & 1" marble between them) I'm thinking about trying balsa core (.500 thick) and carbon fiber for the electronics. Currently my electronics are sitting on either corian, walnut, or maple. 
Geoffkait,
What are your thoughts on the combination of 1/2" balsa covered with .030 carbon fiber to use as "shelves" for lighter (<25lbs) electronics? Obviously the proper feet would still need to be used as would the interface between the shelf itself & the rack. 
Has anyone used carbon fiber to set their equipment on? I noticed dragonplate has balsa sandwiched inside two layers of .030 carbon fiber. It looks like it would work well for smaller platforms (strength wise), but not sure how effective that would be. 
n80,
If you want to try something cheap, try one ceramic ball in each of the walnut feet. You'll only want to use three (not four) feet with the ball high enough above the walnut so it's the only thing making contact with the bottom of your component. Put a very small dot of blue tack at the bottom of the dimple in each of the walnut feet to keep the ball from rolling. Grainger sells ceramic balls. 
As far as reducing micro vibration is concerned, I've had good results with corian on my steel sand filled rack, using the half dome soft iso (I believe) disks between them. It looks very nice as well, but doesn't look like wood. The shelves themselves are only 13 X 16. Not sure how well it would work at 45 inches.