Can aftermarket subs be hooked up to the factory deck? My friend told me that I have to get a new deck to be able to do that.

 

yes after market subs can be hooked up to the stock deck... do a search for this it has been discussed serveral times...

 

Here are the links

1. Replacing Factory subwoofer
http://www.acura-tl.com/forum/showth...&highlight=rmb

2. Sub Question
http://www.acura-tl.com/forum/showth...hlight=pioneer

3.To replace factory rear sub?
http://www.acura-tl.com/forum/showth...threadid=24552

4. done installing my new Pioneer Sub!!
http://www.acura-tl.com/forum/showth...threadid=45542

I had them in my favorites. I'm Sure there are many more. Just do a little search on subwoofer.