BMW Z4 Full Speaker Upgrade DIY

Have you ever felt like your stock speakers are just not good enough or you wanted more quality and bass? In this DIY video, I go over each step of installing and upgrading the dashboard speaker, the rear panel midrange speakers, the door speakers and tweeters and even the woofers behind the seats on my BMW Z4 (e89). The speakers and woofers I’m installing are AlphaOne by BimmerTech and I have been very impressed with the quality of the speakers, the sound they produce and even the packaging that they came in. All of the bracketary, adaptors and crossovers were included as well which made for an easy sound system upgrade. BMW Z4 speaker upgrade has been the best modifications I’ve done to the car so far!

My BMW Z4 (E89) came with the HiFi system (S676A), with included the following speakers:

5 x Midranges

2 x Tweeters

2 x Woofers

but you can also find the following sound systems on the E89 platform:

Base System:

4 x Midranges

2 x Tweeters

Top HiFi (S677A):

5 x Midranges

3 x Tweeters

2 x Woofers

1 x DSP Processor

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