(2) Rockville SBG1154 15" 800W Passive 4-Ohm Pro DJ Subwoofers, MDF/Pole Mount 15" 800 Watt Passive Pro DJ Subwoofers w/ MDF Cabinet and Pole Mount. 15 Pro audio woofer, 400 Watts RMS / 600 Watts Program / 800 Watts Peak 3 High temperature aluminum voice coil. 70 oz magnet woofer, Ported Enclosure for Improved Bass Response. Construction: High-Density, High-Quality Non Resonant MDF wood - Stapled, Bonded & Braced Ergonomic Recessed Handles. Molded Steel Grill, Aviation Grade Black Carpet. Pole Mount, Rubber Isolating Feet. Binding Post / Banana Plug Terminals (Negative/Positive), 1/4 Jack (In/Out) SpeakON (In/Out) All input/output connections are internally connected in parallel. Nominal Impedance: 4 Ohm, Sensitivity: 94dB @ 1w/1m Frequency Response: 20Hz - 500Hz. Dimensions (W x D x H): 18 x 17 x 20, Weight: 44 lbs (2) Rockville SBG1154 15&#034; 800 Watt Passive Pro DJ Subwoofers w/ MDF Cabinet and Pole Mount 15 Pro audio woofer 400 Watts RMS / 600 Watts Program / 800 Watts Peak 3 High temperature aluminum voice coil 70 oz magnet woofer Ported Enclosure for Improved Bass Response Construction: High-Density, High-Quality Non Resonant MDF wood - Stapled, Bonded &amp; Braced Ergonomic Recessed Handles Molded Steel Grill Aviation Grade Black Carpet Pole Mount Rubber Isolating Feet Binding Post / Banana Plug Terminals (Negative/Positive) 1/4? Jack (In/Out) SpeakON (In/Out) All input/output connections are internally connected in parallel Nominal Impedance: 4 Ohm Sensitivity: 94dB @ 1w/1m Frequency Response: 20Hz - 500Hz Dimensions (W x D x H): 18 x 17 x 20 Weight: 44 lbs