x5 stock amp
 

can i hook up a subwoofer to the stock amp without an additianal amp? and how would i go about doing this? thanks

The OEM amp is low wattage and probably cant drive most subwoofers out there. You don't have to spend very much on an amp. I'm using a MTX amp that runs about $150. Do a search and you'll find many members who have various aftermarket subwoofer setups.

More on my setup: http://www.xoutpost.com/x5-e53-forum/...installed.html

Co sign with zerochief.....You cant run an aftermarket sub on the factory amp. You'll need a line out conv. and a seperate amp to power the subwoofer itself.