IMP: 4_; SURROUND: RUBBER; BLACK POLYESTER DIAPHRAGM: BLACK SILK; 5"" X 7""; 2-WAY; POWER HANDLING: 100W 125W; NOMINAL RATING: 50W 70W; FREQ RESP: 55 HZ 20 KHZ; EFFICIENCY: 90 DB; LOWEST RESONANT FREQUENCY: 100 HZ; CROSSOVER FREQUENCY: 4,500 HZ; MOUNTING DEPTH: 61MM SKU: PEREARE57FR