Audio signal constant voltage type with 100V input, housing protection rating IP65, maximum sound pressure level; 125 dB, effective bandwidth 300-5000 Hz, operating temperature;-20°C to 50°C, humidity;Less than 95% atmospheric pressure;80kpa-110kpa ；External dimensions;300×330×160 mm, interface size: 4-inch = M20 = 20 mm, DN15 = thread pitch 15 [import line dimensions can be designed and produced according to user requirements]. Explosion-proof certification, test report. Two power options available: 50W and 80W, with two color choices: gray and red.
