System Type Bookshelf / On Wall Speaker Configuration 3 Way Acoustic Suspension Woofer 2 - 4.5" Paper Midrange 3" Paper Tweeter 1" Mylar Magnetic Shielding Full Impedance minimum 4.7 Impedance nominal 8 Impedance average 9.2 Recommended Power 75W Power RMS 80W Power peak 150W Sensitivity 86dB @ 2.83V @ 1m Crossover Frequency 1.1kHz, 4.8kHz -6 dB LF Cutoff Crossover Slopes 12dB LP, 12dB BP, 12dB HP ±3 dB response 100Hz - 20kHz @ 1m In room response Impedance 6 ohms nominal Input Connectors Spring posts Speaker Dimensions 15.5" x 5.5" x 6.25" (H x W x D) Speaker Dimensions w/ base 16.5" x 6" x 7" (H x W x D) Speaker Weight 13 lbs each Shipping Weight 31.7lbs per pair, 47.5lbs per three Speaker Material BMC cabinet, aluminum bracing with MDF baffle