Ah this is my Xmas present to the 1er. It is an upgrade of the front speakers with amplifier



Brochure reads
A class-leading two-year BMW warranty adds further appeal
to this premium accessory.
– Designed by Alpine Electronics specifically for the BMW 1 Series
and BMW 3 Series.
– No need to visit a specialist car audio store to enhance your
audio system.
– Seamless integration with the vehicle’s electrical system.
– Original speaker position in the doors remains, preserving
the look of the interior.
– High-range/mid-range speakers with aluminum membrane.
– Powerful Alpine Class D technology amplifier 4 x 80 Watt RMS
with a harmonic distortion of just 0.5%.
– Loudspeaker grille with Alpine logo.
– Amplifier located neatly and safely under boot floor.
Alpine Hi-Fi System kit contains:
– Amplifier.
– Two high-range speakers.
– Two mid-range speakers.
– Two frequency gates.
– Cable harness including small parts.
– Two Alpine logo badges.