Overview 8� 2-way In-Ceiling Speaker Woofer: 8� PP cone, rubber surround, 21.8oz Magnet, 1.4" voice coil, bumped back plate, vented pole piece Tweeter: Swivel 30 degrees, 1" Silk dome, Ferro-fluid cooled, Neodymium magnet, wide dispersion Crossover: Phonalic PCB board, 12dB woofer section, 18dB tweeter section, Polymide auto protective reset switch for tweeter Specifications General Data Frequency Range 40Hz- 20KHz Sensitivity 89dB Recommended Amplifier Power 10-160 watts Nominal Impedance 6 ohm Cut Out Size 250mm