JBL BassPro Hub effectively uses dead space in your car thanks to mounting in the spare tire. This frees the user to make effective use of the luggage room. At the same time, JBL BassPro Hub can provide massive full and deep bass playback. It comes with build-in Class D amplifier. 11’’ low distortion woofer, Adjustable Crossover Frequency, Bass EQ, Input Sensitivity and Phase by remote control. It meets High-efficiency Class D standard.