For more powerful bass, the Stage 280W features an 8" (200mm) Polycellulose cone woofer and a 1" (25mm) Aluminum dome tweeter with an acoustic lens and HDI™ waveguide. A visually discrete zero bezel grille and easy installation allow these speakers to be heard and not seen. Elements including baffles with acoustic smoothing, acoustic lens tweeters, and patented High-Definition Imaging (HDItm) waveguide geometry have been incorporated into the design to ensure that the sound is clear and accurate. Specification Details High Frequency Transducer 1" (25mm) Aluminum dome with High-Definition Imaging (HDI™) horn Low Frequency Transducer 8" (200mm) Polycellulose cone woofer Recommended Amplifier Power (Full Range) 20–120W RMS Frequency Response 42Hz–25kHz (-6dB on-axis) Sensitivity (2.83V@1m) 90dB Nominal Impedance 8 ohm Crossover Frequency 1700Hz Inputs Nickel-plated spring-loaded connectors Grille Dimensions H 15.7in (400mm) x W 10.5in (266mm) Cutout Dimensions H 14.6in (372mm) x W 9.4in (238mm) Mounting Depth 3.9in (98mm) Product Weight (Kg) 2.8Kg Shipping Carton Dimensions L 17.8in (453mm) x W 12.5in (318mm) x H 5.5in (140mm) Shipping Carton Weight 8.38lbs (3.8Kg)