i have been using this program to get an idea on building a replacement box for my subs. right now i have 2 jl 12w3 in a sealed box with Vol of 1.25 ft^3 each powered by an mtx 500 watt amp (about 250 watts/sub). i would like to increase the output of the subs in the 100Hz range because the door speakers are a little weak here. my question is would i want a flatter gain plot (ie no peaks). and I cant seem to get any plot for the spl graph please help.
