hello peoples. i currently have an eminence 3015 in a 2.67cu.ft. box tuned somewhere in the vicinity of 50-60hz. using winISD i call it 55hz. i have been curious about building a new box for the driver. i am calculating 3.32cu.ft. into a box tuned to 45hz. modeling the two against each other, i gain maximum power in the 40-50hz range (compared to only 150 watts at 40hz in the old cab) and hit xmax at 35hz rather than 40hz using the new cab. again, modeling the two, the response in the new cab is about 1-1.5dB less in the 80-100hz range, but about 4dB more at 40hz and about 2dB at 50hz. thinking the extra cu.ft. will help cone excursion and prevent frying the speaker at 40hz, is this the right path to take? is the gain in 40-50hz bass better than the loss in the 80-100hz? other than what i have posted, what else can i look at? is someone kind enough to model these two together to double check what i have listed? btw, i am giving the speaker 170 watts. thanks for any response.