They were made from aluminum pipe with an aluminum plate welded on the end. The cans were run through a cleaning pass on a metal lathe. After some final sanding, I sent them off to a powder coater.
The dB650's were a little small, so I sleeved the aluminum with a piece of PVC pipe. The PVC was liquid nailed in and also provides a nice barrier to prevent "pinging."
I ordered 4 of Raul's clamps and used them. The cans are mounted on a FCT.
My buddy made four for his boat except he used the Polk Momo's and the cans are white. They look pretty good as well.
Here are a couple other pics of mine:
As far as the racks, those come on the boat. They are manufactured by some company named CCC or something. They were on the boat when I bought it.
(Message edited by jroyal on September 22, 2005)