12/10/2026
🔊 This BMW i3 came in sounding a little underwhelming… it definitely didn’t leave that way.
We had this BMW i3 in the workshop today for a complete audio system upgrade.
The original setup was pretty lacking across the board, so rather than just changing a pair of speakers, we gave the whole system a proper overhaul.
At the heart of the system we fitted the Audison M5.11 Forza amplifier/DSP, giving us the power and control needed to properly tune everything to the car.
✅ Audison M5.11 Forza amplifier & DSP
✅ Hertz Mille Pro speaker upgrade
✅ Skinz Pro Black sound deadening
✅ Hertz Mille Pro shallow 10” subwoofer
The doors were treated with Skinz Pro Black while the Hertz Mille Pro speakers took care of the front end.
To finish it off, we added the shallow 10” Mille Pro subwoofer to bring in the low-end bass the original system was seriously missing.
The difference is massive — much cleaner, more controlled and finally some proper bass without turning the i3 into a boot full of audio equipment. 👌
Thinking your factory system could do with a bit more life? Get in touch.
📍 Audio Division Ltd
Unit 5, Lencia Industrial Estate
East Parade, Ilkley, LS29 8JP
📞 07623 22986
🌐 audiodivision.co.uk