In-Ceiling Speaker, In Ceiling, Overall Height (In.) 9, Overall Width (In.) 10, Overall Length (In.) 10, Enclosure Color White, Enclosure Material Plastic/Metal, Tweeter Dia. (In.) 1 in, Tweeter Composition Aluminum, Woofer Dia. (In.) 4 in, Woofer Composition Polypropylene/Butyl, 20 Watt (RMS), Max. Wattage 20 W, Sensitivity (dB) 90 dB, Impedance (Ohms) 4 ohm, Transformer Settings 25v/70v/100v, 2 Power Taps @ 25V, 20 Power Taps @ 75V, Frequency Response 90Hz to 22KHz, Weight (Lbs.) 7