"The TD-4001 successfully achieves all the design objectives we set forth -
very high efficiency, wide and perfectly flat response from 600Hz to 20kHz, and low distortion."

I'm currently using JBL 2446J's, with T.O.C. built into my passive crossover.

I feel a compression driver upgrade coming on soon, and it would be
easier to rationalize the $$$ if I could simplify the crossover.

• TAD TD-4001

I've used the TAD 4001, and found that it does benefit from top octave compensation, but not as much as the JBL 2446. Some people use the TAD 4001 on horns that provide enough EQ acoustically, but this means that polar response suffers. For stereo HiFi use, I prefer to use horns that have collapsing DI in the vertical and a constant 90° coverage angle in the horizontal axis. This provides a good compromise solution, requiring less electrical EQ and making compensation fairly simple.

1. Mount the drivers to my existing JBL 2380A horns
2. Replace the horns with the (seemingly) ideal mate, the TAD TH-4001
(or close equivalent)

Will either of these two horns allow me to eliminate the T.O.C.?

Mike

• TAD TH-4001

These drivers hold their resale value very well. You could buy them and try them without much risk, particularly if you buy a good used pair.