Why would you say Fc should have dropped? If I ported the speaker would Fc necessarily rise? It's a real question, not a challenge. What it certainly should improve is power-handling and distortion. Ought to make the roll-off more smooth, too. BTW - you'll see my "handle" changed. I could no longer get to my old mail address. Sorry about that, folks. I couldn't do a password recovery, couldn't reset an account I couldn't get into. I didn't want to bug Mark. Besides, the new "handle" kinda describes my new speaker situation. Bret