The Aurum Cantus APR2.0 ribbon tweeter's compact, space-saving design fits into tight spaces and compact 2-way baffle designs. Also excels as a supertweeter! The driver's hand-made aluminum foil planar hexangular honeycomb diaphragm has incredibly low mass, which contributes to the immediacy and accuracy of reproduced signals. Aurum Cantus APR Series tweeters provide wide horizontal and narrow vertical coverage, and boast high frequency response that extends past 30 kHz. Specifications: *Power handling: 40 watts RMS/60 watts max *Impedance: 6 ohms *Frequency range: 1,700-30,000 Hz *SPL: 93 dB 1W/1m *Recommended minimum crossover frequency: 2,400 Hz *Dimensions: A: 4-3/4" x 2-15/16", B: 3-1/2" x 2-3/16", C: 3-1/2".