VPXT6RVPXT6R Tweeter 1" (25mm) polyurethane dome, Ferrofluid cooled, in acoustic back chamberWoofer 6 1/2" (165mm) injection-molded polypropylene/graphite cone, with integral Santoprene™ surround Frequency Response 45Hz - 20kHz ±3dB Impedance8 ohms nominal; 6 ohms minimum Power Handling 5 watts minimum; 130 watts maximum Sensitivity 89dB SPL (2.83V/1 meter) EnvironmentalConforms to Military Standard 810G for humidity, salt spray, temperature and UV, IP-66 waterproof ratingEnvironment Temp-30º - 175ºF (-34ºC - 79ºC)Speaker Depth 3 1/2" (89mm) Dimensions 9 3/4" (248mm) Cut-Out Dimensions 8 1/4" (210mm) Grille MaterialPowder-coated stainless steelShipping Weight 12 lbs (5.4 kg) pair