Specifications 1 Goldwood Sound GW-6PC-4 Heavy Duty 6.5 Subwoofer 140 Watts RMS and 280 Watts Max 46 - 3000Hz Frequency Response 90 dB SPL 4 Ohm Impedance 1.5 4-Layer Aluminum Voice Coil 20oz Magnet with Bumper Plate Poly-Mica Cone with Rubber Surround and Vented Pole Piece Die Cast Aluminum Frame Overall Dimension is 6.875 Fits Enclosure Hole Size of 6.125 Mounting Depth is 3.125 Designed And Engineered In USA Applications: Pro DJ Speaker Pro PA Speaker Pro Karaoke Speaker Live Sound Speaker Fixed Installation Speaker Studio Monitor Home Audio Speaker Car Audio Speaker This Listing and Price is for 1 Goldwood GW-6PC-4 Heavy Duty Subwoofer