EXT Cab 2011 GMC Sierra / SI BM MK's

[Jrobison918]

I'm really looking into the SI's BM MK line. I would like to run 4 sealed under the backseat, but am not sure if there would be enough room to do this cleanly. I would need 2 cubic ft to do this as they require .5 each. I think 2 cubes is about the max of what you can squeeze out of this area. Does anyone have any ideas/suggestions/words of wisdom in this area?

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[wew lad 5,000+ posts]

you're correct that 2 cubes is about the max, without raising the seat or intruding on space.

the si bm mk iv's (you are talking about the shallows?) dont require a lot of airspace so 2 cubes would probably be enough. as you said, it would need to be sealed. I'm uncertain if you could fit 4 12s, due to the hump. You may be able to fit 4 10s or 2 12s though.

do not buy a prefab sealed box. they leak.

 

[Jrobison918]

I'm looking into the mk3, 4 or 5's depending on which I can find a deal on first. The hump is what concerns me. & no prefab. It will be a custom sealed giving each 12 one half cube. POssibly with some filler.

 

[wew lad 5,000+ posts]

didnt realize those mk v's are out, **** those look nice. as long as you give them near the right airspace itll be fine because the box is sealed.

 

[Jrobison918]

I'm not sure if they're out yet, but yes they definitely look slick! They have a significantly higher power handling at 750rms too.