So Sean is up with his CRX and we are doing some testing... we hit a brick wall last time at 149.0 dB using a 4" aero-port. So... Sean and I got the idea to try a 6" aero-port for the single 8" woofer! The result is 149.9 dB so far. Peak is 66 Hz in the kick... the CRX normally peaks at 68 Hz so we are going to work on re-tuning to break the 150 outlaw. Fun stuff We have as much port area as cone are now *laughs*