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Horn loaded cabs

#2
The horn driver has impedance also. More pertinent is what are you doing as far as the crossover is concerned? If you swap an 8 ohm woofer for an 4 ohm you alter the crossover frequency by a full octave. That would leave a gaping hole in the response of the cab. You also have to be sure the new driver has the same T/S specs as the old, save the impedance, or you'll have all sorts of response problems.
 
#3
Sounds like a huge minefield. Think I'll just leave it as is! The cab sounds great as is, but it's a 4-ohm cab (Peavey Black Widow).

I'm looking to run an ext. cab with my amp. I have a couple 8-ohm EV speakers (15B) and figured I could load my existing rear-ported cab with one of those and buy a single 1x15 or 2x10 ext. cab to work with it.

Appreciate the advice. Thanks.
 

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