After many years of raving about the Altec 32 horn, the only stone left unturned was using it as it was originally designed, that is, with the compression driver oriented to radiate upwards.
|Altec 414A + 32C + 802D + 20275|
As an homage to the WE753C, which was a major inspiration for this project, I henceforth christen this speaker system as the Altec 753C.
|Altec 2-way XO redux|
I've settled on running the 414A woofers in full range mode (ala J-Rob) and replaced all the crossover resistors with non-inductive 12W Mills. This took away the last vestiges of grain in the upper frequencies.
|Altec 614 + 414A + 32C + 802 with GPA34258|
|Altec 753A + 414A + 32C + 802D with 20275|
In spite of the stellar midrange performance of the Open Baffle mounted Altec 755As, I started the Altec 2-way project in the late 90s to address the following issues:
1. More efficiency
2. Extend the frequency extremes
3. Less congestion in dynamic peaks with complex musical passages
After 20-some odd years, those goals have been realized. The Altec 753C is pretty much end game!
Thanks to my buddy Joe Roberts, who explained the intricacies of proper 32 horn orientation. The idea was carefully stored in my mind. I just had to wait for the right opportunity to implement it. And of course, a big thanks to my friend John Piro (aka RCA NUT), craftsman extraordinaire!