2x 4" One Way Power Acoustik XPS-104 Car Speaker 150 Watts RMS Each Speaker 300 Watts Max Power Each Speaker Air Suspension Foam Surround 3/4" High-Temperature Aluminum Voice Coil Frequency Response 45Hz-20KHz Impedance 4 Ohm SPL 92dB Must Connect to Capacitor or Crossover Magnet Weight 15 oz Grill Attached Mounting Depth 1.75" Top Mount Depth 2″ Bottom Mount Depth 2″ Cutout Diameter 4″ There is one speaker in a box, sold individually