... . High quality/competive price Dual 18 inch Professional Speaker Sub Bass SRT-218B Feature1. Strong and efficient output system ... Bars, etc Technical Parameters Model SRT-218B Picture System Sub Bass System Sensitivity 99dB Bass 2*18" 100 cores ... Theatre Speaker, Karaoke Speaker, Horn Speaker, Long Throw Speaker, Sub Woofer, Sub Bass, Woofer Speaker, Amplifier, Power Amplifier, Microphone, Mixer are ...