4th Order Bandpass design....did I do it right??
 

Got a vehicle with some serious sound deadening and the only way to really get good sub tones into the cabin is by porting in.

After reviewing more than 12 subwoofers I ended up selecting the Boston Acoustics SPG555.

Modeled an enclosure using Bassbox 6 (first time using this software) and wanted to get your opinions on final specs.

Anyone see problems with this set up? One of the issues seems to be potential air cavitation using the 6 in port, not sure what is 'too fast' for air to travel without distortion.

Charts, settings, etc....included. Any issues? Adjustment suggestions? Thanks!