Yorkville PSA18S Paraline Powered Subwoofer - 18"The Paraline compact line array series is a premium range of speakers with integrated power amplifiers. Easy to transport and set up, the enclosures can be used in ground stack or flown configurations. All next generation Paraline models offer essential features and high output, and are IP54 rated for outdoor use. The new PSA18S subwoofer offers 3000 watts of peak power, an 18 neodymium woofer, and integrated rigging hardware. It is designed to