Should have this wrapped up by this weekend and have the synthesizer set up.
Here are a few photos:
These are the dozen casters I installed instead of using some polyethylene cutting board for a skid material. Much better and they were only $6 each at Grizzly tools. The new flooring looks gorgeous. This makes the room very 'live' acoustically but I have some sound-absorbing board on order at Lowe's (Owens-Corning type 703).
Here is an overall view of the cabinet. Again, the two synthesizer cabinets total a bit over eight feet in width so I could not use standard plywood for the cabinet. Was able to order some four by ten foot sheets from a local vendor. This gave me space for five racks to mount my other music stuff. The racks are an international standard and were originally developed for telephone equipment.
Here is a detail showing a couple of pieces mounted in the rack bays. I still need to line everything up, screw it together and give another couple coats of paint. The plywood edges look really raw but I have some nice oak molding drying in the garage - stained it dark maple and finished it with polyurethane varnish. The oval light spots at the bottom are holes for KREG fasteners - absolutely bullet-proof system for building cabinets. Given the dimensions of the room, this cabinet cannot be moved out - it will have to be dismantled in place so glue and biscuits are not an option...