FW305+15M4624G+XT25BG60 3way Crossover Design crossover “points” at about 400 Hz/ 1.9 kHz/ 3kHz
This design uses the Fostex 12″ woofer in 3.0 cf3 vented with two ports each 3″ x5″, add 1″ if using double flared. Scanspeak 15m midrange in 0.1 cf3 sealed. The tweeter is a high output Ring Radiator with phase plug. Two large caps on tweeter hi pass and one large midrange cap. 3.0 mH is your series inductor. System impedance mostly 5- 6 ohm in the midband. System output 91 dB+.