• 12-Inch (305mm) woofer with die-cast aluminium basket for solid sounds under all conditions.
• Slipstream port eliminates port noise and provides distortion-free bass at high output levels.
• System optimisation: amplifier is precisely matched with woofer, enclosure and Slipstream port to ensure best performance and value.
• Signal-sensing turn-on automatically turns the subwoofer on and off when the head unit sends an audio signal; can be defeated for use with aftermarket radios that include a remote turn-on lead.
• Input level, low-pass, bass-boost and phase controls make it easy for any user to get the desired sound.

Product Description ------------------- The JBL GT-BassPro12 powered subwoofer pumps out lush, car-rocking bass through a design so cool you won’t want to hide it in your trunk. The patented Slipstream port design delivers deep bottom end while minimizing turbulence. Turbulence, or port noise at high volume, isn’t just annoying; it’s a signal that the port is no longer working and you’re getting less bass than you paid for. The Slipstream design is carefully optimised for the combination of woofer, amp and enclosure, and no other company has it. And with the included remote control for drive-time adjustments, the only time you’ll need to stop is for . From the Manufacturer --------------------- VIEW LARGER ( B007GYU30K.GTBassPro_HERO_LRG.jpg ) JBL GT-BassPro12 ---------------- Add amazing bass in very little space. -------------------------------------- The JBL® GT-BassPro12 powered subwoofer is the easy way to add high-output, low-distortion bass to a car audio system. Its Slipstream port design delivers deep, bottom-end bass while minimizing port noise. It also features improved motor-structure venting for thermal protection, a progressive spider to ensure superior mechanical reliability and an amplifier that delivers maximum power and flexibility. And with the system’s remote level control, which lets you adjust bass level while driving, the only time you’ll need to stop is for . GT-BassPro12 at a glance: ------------------------- * 12" (305mm) polypropylene cone * Built-in 150-watt amplifier * Remote level control * Progressive spider * Vented polepiece * Slipstream port * Oversized, dual-stacked magnets * Speaker-level and line-level inputs * Automatic on/off function * Oversized speaker-protection bars VIEW LARGER ( B007GYU30K.GTBassPro_BCK_LRG.jpg )The JBL® GT-BassPro12 powered subwoofer system’s built-in amplifier is designed to complement its subwoofer for maximum performance. Key Features ------------ 12" (305mm) polypropylene cone ------------------------------ The JBL® GT-BassPro12 powered subwoofer features a polypropylene cone and a rubber surround to provide superior reliability and cone resonance damping. All of that technology translates into tight, powerful, natural-sounding bass that may outlast your car. Built-in 150-watt amplifier --------------------------- The JBL® GT-BassPro12 powered subwoofer system’s built-in amplifier is designed to complement its subwoofer for maximum performance. You won’t have to worry about finding the right amp. We’ve included it for you. Remote level control -------------------- Let the other guy have to stop and pop the trunk. The JBL® GT-BassPro12 powered subwoofer’s remote level control lets you adjust the bass from the driver’s seat, so you can enjoy your ride without interruption. VIEW LARGER ( B007GYU30K.GTBassPro_FRNT_LRG.jpg )This powered subwoofer features a polypropylene cone and a rubber surround to provide superior reliability and cone resonance damping. Progressive spider ------------------ The JBL® GT-BassPro12 powered subwoofer’s progressive spider exerts control over the cone’s motion at high excursion for superior reliability even at the highest listening levels. Vented polepiece ---------------- The JBL® GT-Basspro12 powered subwoofer’s vented polepiece helps cool the subwoofer’s motor for improved power handling and lower power compression. That technology makes the JBL® GT-BassPro12 one cool subwoofer. Slipstream port --------------- A proprietary Slipstream port is a special feature of the JBL® GT-BassPro12 powered subwoofer. The port’s dual flares form an adverse pressure gradient that eliminates port noise at high output – noise that signals that the port is no longer able to pass enough air to operate effectively. The Slipstream port provides clean, distortion-free performance even at the highest output levels. VIEW LARGER ( B007GYU30K.GTBassPro_FRNT2_LRG.jpg )The Slipstream port provides clean, distortion-free performance even at the highest output levels Oversize, dual-stacked magnets ------------------------------ The JBL® GT-BassPro12 powered subwoofer uses oversized, stacked magnets to increase magnetic flux for higher output and cone motion control, and room for high voice-coil excursion. Speaker-level and line-level inputs ----------------------------------- The JBL® GT-BassPro12 powered subwoofer has flexible connections that allow you to connect it to any car audio system. Automatic on/off function ------------------------- The JBL® GT-BassPro12 powered subwoofer automatically turns on when it senses a signal on the speaker level input, eliminating the need for a remote turn-on wire when the system uses the speaker level inputs. What’s more, the GT-BassPro12 will automatically turn itself off a few minutes after the signal stops. Oversized speaker-protection bars --------------------------------- Your JBL® GT-BassPro12 powered subwoofer looks every bit as powerful as it sounds. Its speaker-protection bars help keep the woofer cone safe and project a sleek, muscular look. Product Specs ------------- General Specifications Amplifier power 150 watts RMS; 450 watts max Frequency response 35Hz – 120Hz Fuse rating25A Max current draw 13.5A Idle current draw <500mA Input sensitivity50mV – 4V (line-level input); 0.4V – 16V (speaker-level input) Crossover frequency70Hz – 120Hz Dimensions (W x H x D)22-7/16" x 14-1/2" x 12" (570mm x 369mm x 305mm) Weight38.6 lb (17.5kg) What's in the box ----------------- * GT-BassPro12 Enclosed Subwoofer * Owner’s manual Documentation ------------- Owner's Manual ( https://images-na.ssl-images-.com/images/G/01/electronics/detail-page2/B007GYU30K.GT_BassPro12_OM_EN.pdf ) Spec Sheet ( https://images-na.ssl-images-.com/images/G/01/electronics/detail-page2/B007GYU30K.GT_BassPro12_SS_EN.pdf ) For more than 60 years, JBL has been delivering world-class listening experiences where ever great sound matters What's in a name? ----------------- Even if you've never owned a JBL® product, you've almost certainly heard the JBL sound. It rings out loud and clear from the massive JBL loudspeaker arrays that hang in stadiums, sports arenas and outdoor concert venues everywhere. It literally surrounds you in more than 50 percent of all movie theaters worldwide, including many THX-certified installations (a standard of realism that JBL engineers helped pioneer in 1983). Chances are, many of your favorite songs and movie soundtracks were mixed and mastered on JBL studio monitors - they've been the choice of audio professionals for more than 60 years. But you don't have to venture far from home to experience the legendary power, clarity and technical accuracy of the JBL sound. It's available in exceptional home entertainment systems that incorporate many of the same advanced technologies, materials and manufacturing techniques originally developed for professional systems. It's even available in lightweight, portable packages that you and your friends can enjoy anywhere.