ported box for 2 obsidian 15s

[03silverado03]

can someone help me on a ported box under the back seat of an 03 silverado ext cab for 2 obsidian 15s 55x20x10 @32hz im want a good spl output and its for daily use, they'll be off a sundown sax 1200d

[husker77]

A little more info, like car and dimensions you can have.

About to make a thread about box design? READ THIS FIRST! :)

[Imtjnotu]

thats not enough space for 2 15's

[cdc351jeferson]

can someone help me on a ported box under the back seat of an 03 silverado ext cab for 2 obsidian 15s 55x20x10 @32hz im want a good spl output and its for daily use, they'll be off a sundown sax 1200d

under the back seat how far up are you raising it

[03silverado03]

Probably 3-4inches