The CTS has the stock unit but it also has a Bose system in it from the factory. I know there are much better aftermarket speakers than Bose but the mids and highs sound great. I will be messing with the bass level to prevent any crazy rattling and if it gets bad enough I'll get some dynamat or something to line the trunk with. I'm not looking to be that guy with the annoying rattle when the bass hits and most of my songs are higher in the bpm range and nothing crazy low like Trap and Rap music uses.
I should have these set up soon. The amp is 800watts at 2 ohms so I won't be pushing them to the max but I just wanted to add some extra kick to the system. I'll be keeping the stock 10 running as well. I finally decided to get some subs after sitting in my friends truck which has possibly the best sound and hit I've heard. That Z71 is badass and incognito as hell until he turns the sound on
Don't judge lol Yeah it has some duct tape but I paid almost nothing for everything. Subs, box, amp, wires and capacitor. I love the way Alpine's sound VS Kicker.