Prepare to shake the floors of your entire neighborhood. With a 15" Spun Copper Cerametallic Woofer, the Klipsch SPL-150 is the biggest and baddest of the SPL Series.Bad Ass BassLarge and in charge, the SPL-150 fills even the largest spaces with explosive, deep bass. We've been pissing off your neighbors since 1946 - why stop now?Less ThanBrGreater ThanLess ThanBrGreater ThanLess ThanBGreater ThanKing of The HillLess Than/BGreater ThanSPL-150 is 15" of epic power.Less ThanBrGreater ThanDouble Your PleasureDon't waste your money on one giant sub that won't give you the deep bass experience you need. Two SPL-150s increase your output capability by close to 6 dB, evening out the coverage to make sure everyone feels those good vibrations.High Efficiency Class D AmplifierThe built-in, high efficiency amplifier features an analog preamp design, which maintains the original signal path for cleaner, true-to-source reproduction. The Class D output stage ensures maximum efficiency for maximum output, detail, and low frequency power.Spun Copper Cerametallic WoofersCerametallic woofers are exceptionally light and extremely rigid, providing remarkable low frequency response with minimal cone breakup and distortion for higher, cleaner output using less amplifier power.Less ThanbRGreater ThanWoofer AnatomyKlipsch Cerametallic cones are matted to a dual-layer, copper-wound voice coil for exceptional conductivity.Reference Premiere woofers are housed in a non-resonating, stamped-st