Turbosound iQ18B 18 Inch Powered Sub Speaker configuration Active/passive: Active Type: Subwoofer LF driver: 18" MF driver: N/A HF driver: N/APower Amplifier class: D Wattage: 3000W peak Mixer/preamp: N/AAudio Frequency response: 40Hz - 130Hz Coverage pattern: N/A Max SPL: 130 dBInputs XLR: 2 x XLR/TRS TRS: TS: RCA: Output/thru XLR: 2 from input, 1 mix TRS: TS: RCA: SPEAKON: Enclosure Cabinet material: Birch Width: 21" Height: 27.2" Depth: 22" Weight: 87.5 lb.