Friend of mine is a DJ and wants to get his hands dirty making a powered monitor for louder clubs. Ideal cabinet size would be around 12x12x18. He wants xlr and rca inputs and outputs and is open to either a fullrange or crossover design. I've only really messed around with fullrange voigt pipes and t-amps in the past, neither of which really apply here. It would be a learning experience for me as well. Any tips for starting out would be appreciated. Durability trumps everything here as he has nice near field monitors that he uses for mixing. This would be a piece of gear that would get knocked around a bunch. Any help would be greatly appreciated.