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The Shockwave-12 is a powered 12-inch subwoofer with a built-in Class D amp rated 400 watts RMS and 800 watts peak. Seismic Audio specs it from 40 Hz to 200 Hz with up to 121 dB SPL and under 0.1% THD, in a ported cabinet weighing 50.7 pounds. It suits DJs, bands and small venues for 100 to 300 people who want a compact sub under 12- or 15-inch mains. Against passive subs it saves you an amp and crossover; against premium powered subs it is a budget option with fewer DSP features, and owners rate it highly for output per pound.
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Owners rate it 4.8 out of 5 across 100 ratings, praising the bass output for its size and weight. Complaints are few and mostly about the basic feature set rather than sound.
The Shockwave-12 is a powered 12-inch subwoofer for DJs, bands and live sound engineers. It adds low-end reinforcement for medium-sized venues such as clubs, bars, wedding receptions and outdoor events with 100 to 300 people.
It uses a 12" woofer with a 70 oz magnet and a 2.5" voice coil, and covers 40 Hz to 200 Hz. The built-in Class D amplifier delivers 400 watts RMS and 800 watts peak. Maximum SPL is 121 dB, with total harmonic distortion of 0.1% or less. The ported cabinet has a 5/8" plywood front and an MDF body, and it weighs 50.7 pounds.
The low-pass filter adjusts from 40 Hz to 250 Hz to set the crossover point for your main speakers. The outputs carry a 100 Hz high-pass signal to full-range speakers, which keeps them from reproducing the lows the subwoofer handles. Dual XLR inputs and outputs connect to a mixer or powered speakers. The included pole mount lets you place main speakers on top of the sub. It pairs with 12" or 15" main speakers.
