A JBL 4345 tip from Ian Mackenzie 4343 4344 4345
Set up your 4345 active bi amp crossovers as follows:
Woofer to midrange Linkwitz 2nd order low and high pass @300 hertz with reverse electrical phase on the 2123H
This will sum the acoustic response flat. The crossover point of each driver is -6 db with perfect transient response due to the low Q of the filter. The subjectivity of the translation is perfect.
Ian