JBL STADIUMGTO860 Stadium Series 6x8 Inch Step-up Multielement Car Audio Speaker Systems - Two Pairs JBL—speaker of choice for the world's top recording studios, concert events and movie theaters, delivers a world class listening experience to car audio with the new Stadium speakers. Unmistakably JBL. The high output 2 ohm design extracts every watt of power from the amplifier or head unit enabling the patented Plus One woofers to deliver an impressive wallop for mega volume aficionados. Sophisticated crossovers coupled with soft dome tweeters produce smooth as silk highs with extraordinary detail even at the highest volume levels. An optional midrange speaker with bandpass crossover provides seamless integration with woofer and tweeter, transforming a two-way component system into a three-way system for another magnitude of sound. Power Handling - 100Wrms, 300W peak Sensitivity (@ 2.83V) - 94dB Frequency Response - 40Hz – 25kHz Voice Coil Diameter - 1-3/16 in. (30mm) Impedance - 2.5 ohms In The Box: 2 x Speakers 2 x Plastic multi-hole adapter rings 2 x Foam gaskets 16 x screws 8 x speed clips 2 x JBL logo badges 2 x brand stickers Owner’s manual Plus One glass fiber woofer cones are lighter and stiffer with up to 25 percent more active cone-area than the competition. The result is remarkably accurate sound with high SPL performance. The hi-roll rubber surrounds allow the woofer cone to move freely and emit bolder bass. Oversized voice coils with extra copper and surface area serves to dissipate the heat for improved reliability, enabling maximum power handling with low distortion. Home theater quality soft dome tweeters deliver broader and smoother high frequency response.