Pioneer TS-A25S4 10" - 1200 W Max Power, Single 4-ohm Voice Coil, IMPP™ cone, Single 4Ω Voice Coil -

1200 Watts Max. Power / 350 Watts Nominal Power 10" IMPP™ Composite Cone Elastic polymer Surround & polycotton spider Frequency range: 22 Hz to 1.4 kHz Speaker Impedance: 4 ohms Speaker Efficiency: 85 dB (1W/1M) Mounting depth: 5.625” (144mm) Recommended Box volume : 1.1cu.ft (vented) / 0.8cu.ft. (sealed)