I just lost two rear Bose speakers to age. The edges ripped and they would bottom out upon hitting. So I borrowed a friends sub. Disconnected both the rear 6 1/2s, and left the rear sub in place.

I hooked a 10inch sub up to see if the stock Bose system would power it. The answer. YEP. Not a ton louder..but much deeper and added a whole new level to the system. Im installing another Amp to power the sub ..but for now it sounds great. BTW I have a 600rms sub hooked up... Im sure one of those cheap 150rms subs would sound great!

Placement:
On the rear deck facing glass.. Mids were good..no deep bass..pretty quiet

On the rear deck facing front of car.. Mids still good..deep hitting bass..still quiet.

In the T-Top holder facing backwards w/ Cover closed.

Deep Bass...little mids...Definately louder. Sounds like there is a sub in the car. hehe.

Im going to disconnect the rear bose sub and see if more power is directed to the 10 or not. Ill let you know.

Just wanted to pass that along.