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Dayton Audio DC28FS-8 1-1/8″ Silk Dome Tweeter The famous “Silkie” Dayton Audio’s DC28F-8 1-1/8″ Silk Dome  Tweeter! Superior European design and performance at a fraction of the cost of similar audiophile high frequency transducers! Clinically tested and compared to Morel with amazingly similar results! Recommended for crossover points as low as 1,800 Hz! See Related Items tab for the replacement diaphragm. Specifications: Power handling: 50 watts RMS/100 watts max VCdia: 1.14″ Le: 0.09 mH Impedance: 8 ohms Re: 5.5 ohms Frequency range: 1,300-20,000 Hz Fs: 637 Hz SPL: 89 dB 1W/1m Qms: 0.82 Qes: 0.9 Qts: 0.43 Dimensions: Overall diameter: 4.33″, Cutout diameter: 2.72″, Depth: 1.54″ Replacement diaphragm 275-072.