After years of using a single driver to accommodate both the Harmon Kardon vehicles and the Standard Audio vehicles, we have completed the push forward with a complete redesign of the driver and now offer a system-specific model
for each vehicle.
Visually there is no difference between the two speakers other than the label on the back of the motor structure. The difference of course lies in the details. We've softened up the surround material and the spider, as well as re-wound the voice coil for an exact impedance match to the OEM drivers.
Now, your Standard Audio
BMW can effortlessly sing along without any loss in midbass performance. You'll feel tighter bass response, more impact throughout the lower frequency band, and a warmer sound in general from the woofers.
These woofers are now shipping with all of our Stage 1 upgrades
, as well as with individual pairs