Starsound SSW-F10 
Power Handling:
Maximum Power: 2650W, 
RMS Power: Around 250 Watts
Impedance: Dual 4 Ohm (DVC - Dual Voice Coil) - this allows for flexible wiring options with an amplifier.
Cone Material: Non-pressed paper cone
Surround: Specially treated foam surround
Basket: Black steel basket
Voice Coil: 2.5″ 4-layer voice coil
Magnet Weight: 50 oz
Mounting Depth: Approximately 178mm (this is a key feature for a flat sub, as it's shallower than standard subwoofers)
Sensitivity: 90dB or 92dB at 1W/1M
Frequency Response: Typically 35 Hz to 250 Hz