The 403 Horn by PWK and Roy Delgado
I don't often post on my own equipment. This is mostly because my system is modest by comparison to most of my friends systems. I'll start with one item that is worth sharing which is the 403. This horn was to be the consumer horn for PWK's Jubilee system designed with Roy Delgado. Roy and PWK both had their preferences for horn design. This horn is a combination of their design criteria. From what I have been able to put together Roy uses his trademark modified Tractrix curve and PWK insist on a 1.4 inch throat and collapsing verticals. This creates a great sounding horn with little or no need for eq.. I don't eq this one from 600hz to 18khz.
28 inches wide
10 inches high
11 inches deep
The 403 horn is a prototype that never went into full production.
Would I love to have it made out of wood? YES!
Wood was to be the material it was made of but hey it is a miracle I have these horns anyway.
This wooden one was made in Italy but they mistook the bumps in the horn for a mistake instead of an intentional transition point in the horn. I can only imagine how mad PWK and Roy were when this showed up at Klipsch labs after shelling out thousands of dollars.
There may be better drivers than the BC DE82 but that is the driver PWK picked out for this horn and for that reason it stays. The only thing I would change would be to roll off the high end a little just before it breaks up on the high end.. I haven't bothered because that is where my hearing drops as well.
This curve is not smoothed just a ballpark one I made of the 403.
The Jubilee LF and 403 HF were the last horns PWK was involved with at Klipsch and what a way to go out. Horn building and designing to the end.
