Sorry that was gone a long time ago. And no, you really cant connect anything of that magnitude to your stock system.
Originally Posted by gzep23
is that 12 inch sub still available??? and will it connect right to my oem x3 radio?
If you want to improve bass in the X3 you will have to add an amp as well as different speakers.
Your door speakers are rated at 4 ohms and your mid bass under the seats are rated at 2 ohms.
Please pm if you have additional questions, but look up "sound improvement stage one", before you do.
2013 S4 Loaded (and NO RFT's) Awesome is an understatement
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RIP you were a faithful sidekick and will be missed.
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