Mono Digital Mini: 1Ohm stable: High/Low Input: BPF: BB@45Hz 100 / 175 / 250 RMS @ 14.4V - Auto Turn ON/OFF       Excursion SX10 Dual 4 ohm woofer • Mica Filled Poly Cone•• Santoprene Rubber Surround•• Pressed Steel Basket•• High Temp 8-layer Copper Voice Coil•• FEA-optimized Motor Structure•• Single Magnet•• Linear Conex Spiders•• Rubber Gasket•• Nominal Impedance: dvc 4 Ohm •• Power Handling: 200W (RMS)   Electrical Q Value [Qes] Mechanical Q Value [Qms] Total Speaker Q Value [Qts] Free Air Resonance [Fs]: Hz Equivalent Compliance [Vas]: liters/ft One-Way: Linear Excursion [Xmax]: mm Efficiency [SPL 1W/1m]: dB DC Resistance Per Coil [Re]: Ohm Nominal Impedance(single) [Znom] Thermal Power Handling [Pe]: Watts Force Factor [Bl] 0.62 5.60 0.56 23.86 48.16/1.70 13 84.35 6:68 2x 4 175 11.62     users manual