Trans-Audio SW218S is a subwoofer offering low frequencies reinforcement for medium to high power systems. And it offer efficient sub-bass for different use.
It’s a compact, sub-bass loudspeaker designed to provide high SPL extended bass to Trans-Audio full range and Matrix series cabinets, the SW218 is the first design way enclosure to introduce the high efficient technology of Trans-Audio, and is a single-sided box that can be arrayed conventionally or can be arrayed in back-to-front pairs when the rotundity show.
Frequency range (-6dB)   35Hz~250Hz
Sensitivity ( f>80Hz)   105dB @2.83V/1m
SPL (AES)   136dB SPL 
Peak SPL   139dB SPL 
Nominal directivity ( -6dB)   —
Nominal impedance   4Ohm 
Transducers   2 x 18" (380mm) bass driver
Rated Power (AES)
   1200W
Rated Power (PEAK)   2400W
Cabinet   18mm plywood with internal reinforcements 
Crossover   shall be 80/100 Hz with 24 dB per octave Linkwitz-Riley characteristics
Finish
   BLACK
Protection grill   Acoustically transparent perforated steel,1.5mm thick
Connectors   4 x Neutrik SPEAKON NL4MP
Handles   2 integrated handles on side
Mounting on stand   —
Rigging
   —
Dimensions (H x W x D)   552 x1016 x 800 mm 
Weight   Net unit weight 87.9kg
Gross weight, packed 90.9kg