Originally Posted by Fallen

If your main thing is peak output, a 4th might eek out a couple more dB. But as for getting loud and sounding good doing it, I'm a fan of 6th order bandpasses. Not that a 4th order bandpass has to sound bad. They don't. In fact if you keep the rear sealed chamber the same size as a sealed box that would give you a Q of .7, it'll end up having a response similar to a sealed box. But with extra output below the ports tuning. (so in this case you want the port tuned to say 60-70Hz for daily). This is much different than the typical small sealed chamber, large ported chamber tuned low method. However I really dislike how those 4th order bandpasses sound. But they sure do get loud (over a narrow range).