Ceiling Speaker With Magnetic Grill Elegant Rimless Design Specifications :   Model SM-420 SM-540 SM-660 SM-880 Rated Power 15W 40W 60W 80W Impedance 8ohm 8ohm 8ohm 8ohm SPL( 1W/1M) 88dB 89dB 90dB 90dB Max SPL@ 1M 96dB 100dB 103dB 105dB Product Size Dia 170x70mm Dia 205x85mm Dia 235x90mm Dia 281x110mm Frequency range 80Hz-20KHz 80Hz-20KHz 50Hz-20KHz 50Hz-20KHz Installation In ceiling In ceiling In ceiling In ceiling Enclosure Material ABS ABS ABS ABS Finish White White White White Weight 1kg 1.3kg 1.8kg 2.6kg Speaker 0.75" x1(TREBLE) 4" X1(BASS) 1" x1 (TREBLE) 5"x1(BASS) 1" x1 (TREBLE) 6"x1(BASS) 1" x1 (TREBLE) 8"x1(BASS)