The TLX212L is the dedicated flown subwoofer for Turbosound's Liverpool Series line array, carrying two 12-inch long-excursion low-frequency drivers in a band-pass enclosure tuned for high output and tight pattern control. Configured for cardioid or omni operation depending on processor preset, the cabinet produces a frequency response of 38 Hz to 120 Hz with a maximum SPL of 137 dB peak when driven from the recommended 2-channel amplifier producing 2,000 W into 4 ohms per side. The two 12-inch transducers each feature a 3-inch high-temperature aluminium voice coil, a vented pole-piece for thermal management and a triple-roll polyurethane surround for high mechanical excursion without distortion. The internal bracing system isolates panel modes and reduces colouration above 80 Hz, while the dual front-facing port slots are tuned to maximise output between 45 and 70 Hz. Construction is 18 mm Baltic birch with a polyurethane finish and a black perforated steel grille. Pickup points accept the TLX-FB1 flybar. Connectors are dual NL4 Speakon. Typical use is as a flown sub for the TLX84/TLX43 mains in theatres, corporate AV and houses of worship. Designed and engineered in the U.K.