The TNA-2800S passive subwoofer harnesses two HH-designed 18” low-frequency woofers with 4” voice coils providing a max SPL of 138 dB SPL peak and a frequency response as low as 32Hz. The acoustically optimised cabinet is constructed of 18mm plywood with extensive internal bracing. Integrated rigging hardware makes the TNA-2800S the perfect solution for installed use in clubs, live music venues, and places of worship where high-output bass reinforcement is required. The included heavy-duty castors allow for easy transportation making the TNA-2800S suitable for touring.