Diy Stereo Rack . 2 kick plates should be made (one for the front of the rack and one for the back). Diy audio rack progress (not a flexy) the only costs to me will be the lumber for the four corner supports (roughly $70), the cost of the custom laminated shelves, and the cones that will be on the bottom of each shelf. DIY Headphone Rack — Polk Audio Forum from forum.polkaudio.com The outboard sides of the dual rack have two rods. It can be used for a stereo unit, turntable, or mixing desk. Childrens tables and chairs, butcher block tops, table tops ,cutting.