[JD]

Don't know about building your own, but I am reminded of a friend who did something similar. His approach was to take sets of 4 par56 cans (300w) and mount them on short unistruts with a 4 pack Elation dimmer. The result were a series of small bars that each took 1200w and a DMX feed. They could then be used as a wash by setting all the start addresses the same, or as specials with individual addresses. It was for club as compared to theater usage, but he had a lot of fun with them. In theater, you have additional codes that must be followed, which may preclude the use of this type of item unless all ingredients are UL approved and the assembly does not involve modifications. Building them yourself would also be a code violation in any structured theater as they would not be UL approved.