Amazing $350 A90 Subwoofer Upgrade and it’s Removable

[TYMBOM]

Could you do a replacement in the factory box with maybe build something to enclose the top?

Kind of. Remove the factory crap one and build a proper one.

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[a90fresh]

Kind of. Remove the factory crap one and build a proper one.

looks clean , how did you level the area directly behind the seats?