4th Order Box Build, Need Some Help!

[jaydogg97]

Hi, My name is Justin, I have come up with the following plans for a box build for my 98 ranger, please take a look and let me know if I need to change anything. I plan on putting 2 Alpine Type R in this box, my amp is about 2500rms 5000peak. LINK-----> New Alpine SWR 12D4 12" Type R Dual 4 Ohm Car Auto Subwoofer 3000W Sub SWR12D4 793276011787 | eBay

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[Jroo 10+ year member]

I didnt do the math, but you sealed space seems super small for 2 12's. Even inverted, just doesnt look like enought sealed spaces and you have a very large ported section. From experience, large ported/small sealed 4ths equals real loud with no low end. Are you using software to come up with your specs to start?