2009 BMW 1 Series Audio Upgrade
As with most BMWs, the sound system from the factory is of very poor audio quality. For this customer, we supplied and installed Hertz HSK163 front 3 way component speakers along with a Hertz Hi-Energy HX300 12″ subwoofer. These were powered from a Hertz HDP4 for channel amplifier, which was fed by an Audison Bit Ten D for signal quality. The beauty of the BitTenD is the EQ system that is incorporated to allow full adjustment of sound frequencies.