Kicker Q-Class Bundle - Two 42CWQ124 12" Dual 4-Ohm CompQ Subwoofers- This bundle includes two Kicker CompQ12 Q-Class 12-Inch (30cm) Subwoofer, Dual Voice Coil 4-Ohm, and a Kicker coozy. Kicker CompQ12 12-Inch (30cm) Subwoofer, Dual Voice Coil 4-OhmQ-Class Performance The CompQ certainly produces on every level. It gives the listener everything on the wish list, including high-caliber bass for whatever the music genre, huge voice coils for tremendous power handling and prodigious magnets for high SPL. Like its brand partner L7, which is a 2015 CES Innovation Award recipient, CompQ's motor efficiency and structure is unrivaled, boasting computer-optimized, oversized voice coils for the most power handling (RMS and peak) ever from a round KICKER subwoofer. Technologically Advanced Immense magnets administer the most accurate voice-coil control, using long, low-carbon extended poles for the greatest coil excursion and power handling. This solid, non-vented pole piece provides high mass for optimal cooling during continued use. Built for Power At such high excursion, the components are engineered to perform under such stress. Large-diameter, progressive-roll spiders maintain precise control during long coil throw. Heavy-duty ribbon-wire speaker leads intertwine with the spider for the best reliability. The die-cast aluminum alloy basket adds to the efficient motor structure and superior alignment while protecting the inner workings. Specifications (each): Rated Impedance [Ω] - Dual 4 Sensitivity [1W, 1m] - 86.2 Frequency Response [Hz] - 20 – 100 Recommended Amplifier Power (watts RMS) - 850 Outer Frame Dimension [in, cm] - 12-1/2, 31.8 Mounting Depth [in, cm] - 7-1/8, 18.1 Mounting Cutout [in, cm] - 11-1/16, 28.1