Box help please

[Duane Theman]

I have had too many people who aren't +loud try and tell me what type of enclosure I need for my car could someone please help me? I'm not looking for a huge bandwidth, I'm only looking to kill between 20-45 hz and to get as loud as I possibly can in that range, I have a 2013 dodge challenger 2 Sundown nightshade V3 12s on 2 DC 3.5ks I'll pay for the design

[Triticum Agricolam]

From 20-45 Hz is over one octave so it it actually is a decent size bandwidth, which is going to make your goal harder. Do you really need good output all the way down to 20 Hz?

What are the max dimensions that will fit into your trunk?

[im_quagmire]

IMO, I'd go 4th order. With the ns 12s you may hit or miss with other box builds. you can adjust the port size on the 4th as you build it and make changes as you find where your box peaks, sweet spots etc.

[Duane Theman]

I would simply like to play down to 20hz (or lower) with authority with my focus to be about 30-32 hz i can send a sketch up file of my max dimensions