18-in next generation high performance subwoofer, specifically designed for high SPL very low frequency applications in either a reflex, bandpass or horn loaded configuration - Walmart.com
Eighteen Sound Speakers - 18 Sound speakers - Eighteen Sound speaker partss - 18 Sound woofers, 18 Sound high frequency drivers and 18 Sound lightweight neodymium low frequency woofers and midrange speakers
Eighteen Sound 10NMB420 High Output Transducer 10" Speaker - Single - 18 Sound | Reverb