HiFi System
The analogue 6-channel 'HiFi' amplifier has the same technical specifications as the one fitted in the E83. In the E90, however, it features settings specific to the E90 (diplexers, equalizing).
The HiFi amplifier is located behind the rear left side panel trim in the luggage compartment.
The audio signals are transmitted in analog form from the radios or navigation systems to the HiFi amplifier. This amplifier amplifies the signals and transfers them to the speakers.
A total of 10 speakers are driven by 6 audio channels:
- A high-range and mid-range speaker in each front door
- A tweeter and a mid-range speaker on each side of the rear shelf
- A central bass speaker under each front seat