Thanks for the info sofar. I love the elegant simplicity of the cornerhorn design. As it happens the front of my listening room has 2 closed corners 13' apart relatively free of obstructions for 8' in all directions until the listening area. The room is 20' long with an 8' ceiling.

However I am concerned about the steep dropoff displayed by the 2226 in the 7 cornerhorn design. I would want more low frequencies in a subwoofer application. I am wondering how to coax more low frequency response out of this driver. I read your comments about low tuning and underdamping, and I am wondering how you would approach adapting that to the corner design.

Example it occurs to me that by extending the enclosure compartment by adding an enlarged chamber area at the top attached to the current 2.5 cubic foot area you could increase the volume, and then lower the tuning, while keeping the loading identical. However how critical is relationship between the loading and the exact tuning of the enclosure?

James