6.5" Waterproof Coaxial SpeakersMax power handling: 130 Watts (pair)Sensitivity: 91dB, Frequency: 65Hz-20kHzNominal impedance: 4 OhmsPolypropylene woofer: 6-1/2" Magnet: 11oz.Mounting hole diameter: 5"Mounting Depth: 2-1/3"Tweeter type: DomeTweeter material: Titanium