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Wired Remote With User Interface Controls Gain control adjusts the volume level right from the drivers seat. Phase switch changes the input phase to inverted or noninverted. (This can sometimes be helpful for troubleshooting.) Crossover frequency control adjusts the crossover frequency to any point between 50Hz and 150Hz. Bass EQ control provides 12dB of boost.
Line-level Inputs and Speaker-level Inputs The JBL BassPro Hub has line level inputs and speaker inputs that allow you to connect it to any car audio system making it a great upgrade to your factory system or the bass foundation of the aftermarket system of your dreams.
Harman Standard Reliability Testing JBL speakers have to undergo a testing process that would destroy lesser speakers. JBL freezes them, bakes them, shakes them, blasts them with ultraviolet light and drives them at full power for days at a time.
JBL at an Affordable Price This is JBL-the legendary speaker and sound company that has excited audio enthusiasts for over seventy years. There's nothing better than riding with JBL.
Slipstream™ port design At high sound pressure levels, air flow turbulence inside a vented enclosure's port can create noise that sounds like woofer break up. The patented Slipstream port in Series II enclosure uses a double-flared design to minimize turbulence, and eliminate unwanted vortices.
SSI™ (Selectable Smart Impedance) Most car audio system designs call for 2- or 4-ohm impedance. Series II subwoofers feature an exclusive dual impedance switch that lets you choose either load impedance option. Not available from any other manufacturer, SSI lets you reconfigure your system by simply flipping a switch.
High-roll surround Series II enclosure incorporate a high-roll surround that provides superior cone edge suspension while maximizing excursion. It not only increases the cone area, it also provides remarkable linear stability and reliability.
Proprietary cone design JBL subwoofer cones aren't just built to thump, they're built to last. Series II enclosure feature an exclusive cone design that delivers superior rigidity for long-lasting performance.