Raw Acoustics Line array kit is $4500. Even their really small line array is $2000. The Selahaudio small kit is $3700. This is quite a bit different from the under $1000 that you quoted, Fred.I can probably draw up plans using my PVC tube kit, along with the electronic crossover system for less than $800(sub woofer would be extra).
Maybe when I'm done, I should market my design, pre routed and ready to glue together. for a real $1000.
eric