Subwoofer Opening Rear Seats

[@bronztaco]

I know this might be more of a me problem, but I do like the subwoofer that comes with the truck, and ya I do bump it hard, but it keeps opening up my rear seats. Does this sound like I have locking issue with my seats or is the woofer just hitting too hard? Let me know your thoughts

 

[oregonDoug]

Here's my thoughts- Totally reminds me of this classic Pioneer car stereo ad: