Best products for baffle material s ?


Looking for the "best" combination of materials. Building new boxes for my B&W CM1 bookshelfs as I can feel vibration on the baffle and sides, with classical music, quartet, at even very modest volume. These are very small 2 ways - so I can afford to go "all-out" on the boxes. High mass, inert, shaped baffle to minimize diffraction, interior design to break up waves. I'm considering only products that can be "woodworked". More detail later. Thanks.
ptss
Of course, Peter. Somehow- I thought you had already covered
that elsewhere and that the OP had replied, in the
affirmative.
BTW, Ptss: You mentioned doing the cabinets in black.
Corian has a color called, "Nocturne" that can be
polished to resemble a Piano Black finish. Would look
sharp, with no visible seams and a 1/2" radius, on all the
corners. Personally; I'd dovetail the sides, top and bottom
and install the front and back with dado joints. Talk
about a solid/non resonant cabinet! I can send you a sample
piece, if you want to get an idea of how rigid, dense and
workable it is.
The width of baflle influences more the frequency response of the driver, or its spread?
Magico got back to me and clarified the material used in the front baffle of the S5's is pure 6061 T6 aluminum which is not extruded. Interesting as the finish doesn't feel like aluminium. But today I gave it the knock test & it sure does sound like it! I'd estimate the front baffle is the same, or similar thickness to the 1/2 inch thick side panels (ie: bloody solid).
How about 3/4 or 1&1/2 inch black granite countertop green glued onto 3 inches thickness of MDF? Very non-resonant?