21" Subwoofer ABUSE w/ HUGE B2 Audio XM 21 inch Sub EXCURSION | EXO's Biggest Free Air Testing

Testing out some HD excursion shots with a huge 21" subwoofer from B2 Audio! Seriously, this XM-21 is GIGANTIC... But yet, it keeps up with all the fast paced bass lines and music we throw at it. Check out that woofer excursion! Thanks for watching :)
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Category : Doublsmm

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