Peavey Blue Marvel® Classic®-1238 4 Ohm Guitar Speaker Features: Impedance: 4 Ohms Power capacity: 300 W Peak, 150 W Program, 75 W Continuous Sensitivity: 96.8 dB 1 Watt / 1 meter Usable frequency range: 70 Hz to 6.5 kHz Cone: Paper with treated paper edge Voice coil diameter: 1.5 inch / 38 mm Voice coil material: 2 layers, thermally bonded copper wire, Kapton former, Nomex® stiffener Specifications : Weight 10 lbs. (Packed)