JBL PT waveguide #6815 (VTX F15/F12)

I have a pair JBL 2451 with Truextent diaphragms and the small 12 inch PT Waveguide from VTX (down left on the picture).

Does anyone know the «perfect» crossover frequency and size of the mid/woofer related to off the axis respons in the crossover area?

I hope i could use it around 1000-1200 Hz?


IMG_1367.jpeg


https://www.audioheritage.org/vbull...rade-from-2332&p=371066&viewfull=1#post371066