18" woofer / 3" voice coil. The FBT X-SUB 118SA provides the following performance criteria: frequency response of 38Hz to 120Hz at -6dB, maximum SPL of 136 dB peak, 1200W Class D amplifier. The FBT X-SUB 118SA provides a DSP processor with 4 presets (2 responses with 2 different cut-off frequencies).
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