This is a nice RCA SP9905 Subwoofer. It features 8 Ohm Impedance, 30 Watt Maximum Input, and is Passive.
2 black anodized aluminum vented voice coil former High-temp TIL voice coil former Lightweight cone for increased efficiency Improved suspension & coil design for PR15V2 models Tough rubber top gasket High-strength wide roll surround
This is a nice quality RCA SP9905 Subwoofer. It features an impedance of 8 ohms, and a max input power of 30 watts.