What are the specs on the standard speakers in an E85 Z4 with an amplifier..................... dumb it down if you can I think I'm looking for wattage and Ohms??? :/
http://www.z4-forum.com/forum/viewtopic.php?f=2&t=67364&hilit=Carver+amp
Have a look at this
Ian replaced his dsp amp but was able to keep factory head unit