2012 Benz GL Harman Kardon Measurements

These are some frequency response measurements of the 2012 Mercedes-Benz GL-Class’s optional Harman Kardon in-car sound system. While its frequency response is far from neutral, this 12-speaker sound system is quite enjoyable to the ear. The sub-bass boost compensates for the engine noise, and the treble roll-off makes a non-fatiguing sound, which is especially appreciable for long road trips.

Driver Seat

driver-seat-fr-default-settings

driver-seat-decay-default-settings

Front Passenger Seat

passenger-seat-fr-default-vs-bass-10

Fortunately, setting the bass level to -10 in the sound settings makes the low bass less exaggerated and the whole bass region flatter.

passenger-seat-decay-default-settings

passenger-seat-decay-bass-10

Normally, you would expect surround sound effects to adulterate the frequency response, but this is not the case with Logic 7, which significantly improves the soundstage while keeping the original frequency response intact.

Normally, you would expect surround sound effects to adulterate the frequency response, but this is not the case with Logic 7, which significantly improves the soundstage while keeping the original frequency response intact.

Logic 7 does not add reverb.

Logic 7 does not add reverb.

Rear Seats

The rear seat passengers will miss some lower mids.

The rear seat passengers will miss some lower mids.

rear-left-seat-decay-default-settings

rear-middle-seat-decay-default-settings

Overall, the Harman Kardon sound system in the 2012 GL-Class delivers good performance in terms of midrange neutrality, soundstage and spatial consistency. I strongly recommend keeping Logic 7 on and setting bass to -10.

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