I figured I would get more responses here rather than the electronics forum. Interested in upgraded the stereo and installing Sirius satellite radio however, I came up with some discouraging news. THis is where I need the help.

1. Do I have to replace the speakers if I replace the radio unit?
2. If my car is XM ready, what is the easiest and cheapest way to convert to Sirius if I already have the tuner.

Thanks in advance,

 

U may need new speakers depending on what ur stock one puts out and what teh new one will. If u switch it with a stock s4 one taht has sirius in it it should plug and play. Dont know much about stereos thou.

 

Thanks for the update, anyone know the speaker configuration for the S4 Bose system?