Speaker units install in seconds. They simply snap fit to any 10-13mm thickness ceiling by means of the integral pressure clips. The labour cost savings for the pro sound installer are both obvious and substantial. The snap clip material is formulated to retain long service life strength and spring action, ensuring a snug vibration free fit to either gyprock tiles, mineral fibre tiles or fixed gyprock ceilings.Fitted with twin cone 200mm driver with 2 way terminal block. Power Taps: 0.33, 0.66, 1.25 , 2.5, 5W Frequency Response: 100Hz- 15kHz Size: 200mm SPL (1W @ 1M): 93dB Hole Cutout (Ø): 246mm Connection: 2 way terminal block Note: All SPL figures are measured at 1KHz /- 2dB.