I'm about to do a 4th order through the rear deck of my town car . 2 sundown sa 15's . How much port do you guy's think would be a good start ? Box is going to be 4 cubes sealed...8 ported tuned to 48hz. on 1500 watts . I'm thinking around 120-140 inches of port . Or should I go with more being on 1500 watts ?
Thanks for any help