This is a nice quality Aiwa TS-W35U Subwoofer. It features an impedance of 8 ohms.
2.1 Studio Speaker System. Magnetiy Shielded Satellites. Base Reflex Subwoofer. 12W RMS/24W Peak Power. Accepted up to 15 days after receipt. If after that time, you need to the manufacturer for tech support/an exchange 866-890-7115.