Trade name: STC 502 Standart +Pattern: roundType: speakers 13 cm (130 mm)Height: 49 mmType acoustic: coaxialMain speaker dimensions: 130 mmNumber of bands: two-waysRated power (4 Ohm): 60 WMaximum power: 120 WImpedance: 4 OhmSensitivity: 89 dBFrequency range from: 80 HzFrequency range up to: 20000 Hz