The DD12 is sealed box thus the low frequency extension. I've had my SW12's for several years now and I've never heard any noise from the port.

My feelings are still the same as Jerry. The DD series has a lot to offer for the money and to stay in the Aerial family the SW12 is a nice looking sub. It is tall and large though. The DD12 will be smaller.

Ron


HT: 568.2mm (Revelation One filter), 518x2, SB3, Bryston 7BSTx3, 8BST, Aerial 10T, CC3, SW12(Qty2) w/SVS AS-EQ1, MK Tripole x4. JVC RS1u, DVDO Duo, Oppo 103 w/Vanity103HD, Sony PS3, VIP 3D Theatre, Acer H5360. Logitech Ultimate Remote and Hub.