8 ohm stereo power: C12: 400W x 2, C18: 550W x 2 4 ohm stereo power: C12: 600W x 2, C18: 825W x 2 8Ω stereo power: C12: 400W x 2, C18: 550W x 24Ω stereo power: C12: 600W x 2, C18: 825W x 28Ω bridge power: C12: 1200W, C18: 1650WFrequency response: 20Hz to 20kHz, -3dBS/N rate: more than 95dB, slew rate: 30V/μsDimensions: 483 x 470 x 89mmGross Weight: C12: 19kgs, C18: 21kgs2-rack space unit, heavy- ...