Studio Replacement Woofer. woofer. 150 watts max. ohm. 20 oz. magnet. voice coil. Mounting depth One STX-848 Sub-Woofer Speaker This is the updated woofer STX-848 that replaces the NWX-844 8" subwoofers. You will receive one subwoofer with this purchase. This is a 8" 50 Watt Max subwoofer with a " ASV Voice Coil. This is a great replacement sub for DJs, home, and car audio. Specifications: One STX-848 8" Subwoofers 8" Paper Cone with Cloth Edge " ASV Voice Coil 20 oz. Magnet Frequency Response: 60Hz-6,000Hz Sensitivity: 9dB / W(M) Power Rating (per sub): 200W Max Power - 75W RMS 8 Ohm Impedance This listing is for a single Speaker! Brand New & Factory Original! MODEL NO - STX-848