The JBL® W12GTi MkII 12-inch (300mm) subwoofer is nothing short of amazing. Using technology from the JBL professional audio division, this sub features the patented Differential Drive® Design (US patent no 5,748,760 and other patents pending) motor that uses opposed dual voice coils in a neodymium magnetic field and handles an amazing 4,000 ...

Now the 670GTi brings uncompromising JBL performance to a new generation of car audio enthusiasts. Featuring the identical woofers, tweeters and crossover circuits as its predecessor, this reference-class component system delivers huge power-handling capability, flat response and unparalleled distortion elimination.

JBL engineers designed the 660GTi speaker to produce strong, clear sound from a head-unit or amplifier capable of delivering up to 600 watts of power. The 660GTi’s ultra-rigid Kevlar cone eliminates peaks and dips in the mid-bass and mid-range frequency response.

12" Dual 6 Ohm GTI Competition Level Subwoofer; Power Handling: Peak: 4000 watts; RMS: 700 watts; Impedance: Dual 6 ohm; Kevlar paper cone woofer; Nitrile-butylene surround; Differential Drive® Design motor; Symmetrical field geometry ensure linear cone travel and low distortion; 3" Voice coil; Frequency response: 18-1000 Hz; Sensitivity: 91 dB

JBL GTi component systems originate in a decades-long passion for studio accuracy and concert impact. Their design demonstrates the technical acumen required to sculpt sound with grace for car cabin acoustics. Here are several of the key technologies that help GTi deliver an incredible listening experience.

This design enables each GTi subwoofer to use a pair of smaller 3"-diameter voice coils. This dual-coil configuration provides significantly higher power handling through increased surface area, and maintains the low-moving mass not possible with larger coils.

JBL GTi component systems originate in a decades-long passion for studio accuracy and concert impact. Their design demonstrates the technical acumen required to sculpt sound with grace for car cabin acoustics. Here are several of the key technologies that help GTi deliver an incredible listening experience. SYMMETRICAL FIELD GEOMETRY™

JBL W10GTi MKII JBL 10" 3000 Watts Competition Subwoofer Recone Dual Voice Coil 4 Ohm. 10" Dual 4 ohm GTi Series Subwoofer with Differential Drive Design (DDD) Motor; Power Handling: Peak: 3000 watts; RMS: 600 watts; Impedance: Dual 4 ohms (2 ohms parallel/8 ohms series) Kevlar®-impregnated paper woofer cone; NBR (Nitrile Butadiene Rubber ...