BMW is the first European manufacturer to offer a THX Certified Car Audio System. Both the BMW Z4 Roadster and Coupe provide car buyers with a system that delivers state-of-the-art sound experiences. In the BMW Z4, the speakers, subwoofers and other audio components are just half of the equation. The other half is equipment performance, positioning and an analysis of the vehicle’s acoustic design.
From the moment you buckle up, turn the key and hit play, the THX Certified Car Audio System will surround Z4 drivers and passengers with brilliant musical performances. Whether you are listening to pop, hip-hop or classical music, the THX Certified Car Audio System will deliver the intensity and brilliance previously reserved for home theaters.
| BMW Z4 Roadster and Coupe |
| Locale | Speakers | Amplifiers |
| Front Door | 1" tweeters (2)
4" midrange (2) | 25 watt (4) |
| Front Kick Panel | 6" woofers (2) | 40 watt (2) |
| Rear | 6" subwoofer (2)
4" midrange (2) | 100 watt (2)
25 watt (2) |
| TOTAL | 10 speakers | 430 watts |