How much room do you have to work with? What amp/s will you be using. Obviously if you double your cone area with correct space and power your going to get signicantly louder. I ran 4 15" l7's on a rockford t4000.1bd and it was balls loud but took up to much room. Can get just as loud with a pair of 18"s or even good 15s with gobbs of power.
Do you really want four L7's, or you want that much rms. Thats about 2800rms give or take. My motto is most more with the less space. You could get a DD or a BTL or something. I think four is too much personally. Two 2000rms subs and call it a day.
Do you really want four L7's, or you want that much rms. Thats about 2800rms give or take. My motto is most more with the less space. You could get a DD or a BTL or something. I think four is too much personally. Two 2000rms subs and call it a day.