The specifications of the speaker:Nominal Impedance: 8 ohmsFrequency Response: 38Hz to 30KhzSensitivity: 89db for 1 watt at 1 meterBass/Midrange Driver: (2) 5″ magnetically shielded carbon-filled polypropylene units with phase plug. Bass loading through equalized rear reflex port.Tweeter: 3/4″ magnetically shielded soft fabric dome manufactured to ProAc specification.Dimensions: 17 1/2″ (445mm) long x 7″ (178mm) high x 7 5/8″ (192mm) deepWeight: 22 lbs (9.6kg)

Fungsi 100%normal, 100%original Made In England