JBL brings you wireless remote control over your system's bass boost. The MS-WBC wireless bass controller communicates with your JBL MS amplifiers without the need to run wires through your vehicle. But it's not just a simple subwoofer bass boost it also applies a boost to the low midrange speakers, so your system's crossover point remains constant and the overall texture at the boost point sounds smooth.
The MS-WBC cuts or boosts bass frequencies below 60 Hz by +/- 10 dB and works with up to four JBL MS amps simultaneously. It runs on batteries, but also includes a power cable if you want to hardwire it into your vehicle.