Help me put some junk in the trunk.

[adam7751]

I am doing my first ground-up build. I've got everything but I am stuck on finding the right subwoofer and Mono amp.
Criteria:
-a budget of ~$500
-want loud heavy bass
-want the system to last
-I want the best sounding sub for my budget
-the sub is going in the trunk
-dimensions of free space 38"(L) x 24"(W) x 15 5/8" (H)
I am looking pretty heavily into getting a preloaded sub enclosure. I've been looking at Rockford Fosgate P3X12
I know I want the most bang for my buck and I think it would be safe to assume a value of 300W RMS minimum but please tell me I can afford more if I can. I will take any suggestions.

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[Popwarhomie 5,000+ posts]

Didn’t look up your box specs cause I’m on my phone and don’t feel like doing the math but you can get a Taramps MD1800 and American bass XFL with money left over for supplies to build a box and wiring.

Will shit all over any preloaded bs.

 

[BCotrell 10+ year member]

just did the minute math and you’re over 8 cubes before displacement but you’re a bit short for a 15”. I just put a 12” xfl in my daily driver on les slower than that md and it met my basshead expectations.