The TNA-1800S passive line array subwoofer features a high power 18" low frequency woofer with exceptional high output. Equipped with integrated rigging hardware, the TNA-1800S can be installed quickly and easily. The TNA-1800S offers a max SPL of 127 dB and offers a frequency response as low as 32Hz. When combined with the TNA-2051 and TNA-1200S, the TNA-1800S offers an ideal venue installation or point source solution. Ideal for venues, schools, sports, gyms, hotels and more.