2) Boss PG553 5.25" 250 Watt + 2) CH6930 6x9" 400W 3 Way Car Coaxial Speakers BOSS Audio 5.25" Speakers provide 250W of MAX Power (each) Impedance: 4 Ohm; Frequency Response: 85 Hz to 20 Hz; SPL: 90 dB BOSS Audio 6x9" Speakers provide 200W of MAX Power (each) Impedance: 4 ohms Each; 50Hz-20khz Frequency Response; Sensitivity: 92 dB @ 1 Watt/1 Meter 5.25" - Mounting Depth of 1.68" ; 6x9" - Mounting Depth of 3.125"