Amplifier type: Dual class AB monolithic Drivers: 5" Kevlar woofers, 3/4" silk dome tweeters Signal-to-noise ratio: 95d - B (typical A-weighted) THD+N: 0.05percent at all power settings Crosstalk: - 50d - B Frequency response: 50Hz - 22k - Hz 1.5d - B Input impedance: 10K ohms unbalanced Protection: Output current limiting, thermal over-temperature, power on/off transient protection, replaceable external main fuse Dimensions (H x W x D): Left speaker: 10.75" x 7" x 9" Right speaker: 10.75" x 7" x 7.75" Weight - Left speaker: 7Kg/15.4 lbs. Right speaker: 4.4Kg/9.6 lbs Color: black. Gender: unisex.