sub woofer

I'm selling the Shaker Pro Subwoofer that came with my 2018 GT 12 speaker Shaker Pro system. I've upgraded the subwoofer in the enclosure from stock to a JL Audio 8W3v3-4. It's a really nice sub and works great. Asking $330 obo for both plus shipping or local pickup. I'm located in Michigan...

I have a new to me 2018 Ford Mustang Gt with the 9 speaker system without a subwoofer. The system is adequate, But I want to add more bass. Can I just buy a powered subwoofer, hook it up to rear speakers and call it a day? I keep reading all this stuff about Forscan and LC2i, Do I really need...

I am building a subwoofer for my '18 vert and am looking for carpet that is an exact match to the OEM trunk trim. Does anyone know where I can find this?

After reading Stoli's advice after going thru his full speaker replacement of staying stock and just adding a sub woofer (assuming you don't need the deep BOOM BOOM), that is what I would like to talk about here and eventually do to my Convertible with base 6 speaker (no oem amp) system. Feel...