Seismic Audio - 1x15 & 2x10 BASS GUITAR SPEAKER CABINET COMBO PRO AUDIO SA 115 has one 15" Woofer with 50oz Magnet and 2.5" Voice Coil. 200 W RMS - 400 Peak. 40Hz - 5KHz. Sensitivity 96db. 8 Ohms. 5/8" Plywood Front Panel. Two 1/4" inputs. Recessed Handles. Full Metal Grill. Dual Ports. Black Carpet with Metal Corners. SA 210 has two 10" Woofers with 50oz Magnet and 2" Voice Coil. 200 W RMS - 400 Peak. 40Hz - 5KHz. Sensitivity 97db. 8 Ohms. 5/8" Plywood Front Panel. Two 1/4" inputs.