High-performance ABS Rimless ceiling speaker, 5? coaxial Kevlar speaker driver, 100V line transformer, power at 100V 20Watt, crossover for better sound quality, SPL 1w/1m - 89dB, max SPL @ 1m - 100dBHigh-performance ABS Rimless ceiling speaker, 6? coaxial Kevlar speaker driver, 100V line transformer, power at 100V 30Watt, crossover for better sound quality, SPL 1w/1m - 90dB, max SPL @ 1m - 103dB, freq. response 100Hz-20Khz, diameter 235x90mm, 1.8kg, diameter 205x85mm, 1.3kg