Second 6x9 Subwoofer Under Rear Seat?

[oysterville]

In the pondering stage of replacing the 6x9 sub in my hybrid. I started to ponder putting in a bridgeable 4 channel amp and putting the second 6x9 of the set into an enclosure under the rear seat.

Has anyone tried this yet? Are there any thoughts on how much of a difference this might make? I already have replacement door speakers on route, but the heart wants what it wants and my heart wants more low end oomph.

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[Amarant59]

Yes I've tried this

 

[The Cyber Orange Guy.]

Can in compare with a 8 inch sub ?

No plans for doing it, just trying to get some idea for future reference for me and others in the forums.

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