VocoPro  VX-15 Professional 15 Vocal Speaker Impedance: 8 . Carpeted with metal speaker grills. Sensitivity: 100 dB Frequency response: 20Hz-20kHz. Shipping Dimensions: 193/4" (L) x 19" (W) x 26 1/4" (H). Shipping Weight: 53 lbs. Made in the U. S. A Frequency response: 20Hz-20kHz. Shipping Dimensions: 193/4" (L) x 19" (W) x 26 1/4" (H). Shipping Weight: 53 lbs. Made in the U. S. A