Did a lot of testing today. I purchased the HII to HIII upgrade kit from Klipsch. It gave me all new drivers, horns and crossover for a Heresy III. I have turned the kit into a Forte. I purchased the Forte III passive radiator, replicated the Forte cabinet internal volume and created what you see in the pics. The cabinets are test cabinets only. Internally braced very well. I put one passive radiator in front and one in back. The finished product will have to have the passive in front as I will have to push these cabinets up against the wall. I adapted and mounted one of the HIII mid drivers to a Peavy bi radial horn. The other mid is on the OEM HIII mid horn.
