Spldecendant 10+ year member
CarAudio.com Elite
What's the magic box size they like after displacement on about 4500w rms? I just got 2 solo x 18's the area in the back of my sub is 49w by 22.5h and 40d but I would need to be ported so I would say I can go like 37 deep and I'm going to be running a dc9k to 2 of them. I was thinking 7.5 cubic ft each but was unsure