Klipsch La Scala AL5 Three-Way Fully Horn-Loaded Floor Standing Black Loudspeaker (Pair) - Frequency Response 51Hz - 20kHz - 8 Ohms Nominal Impedance - Medium Frequency 450Hz - High Frequency 4500Hz - 121dB Maximum Spl (Sound Pressure Level) - K55-x 2" Midrange - Phenolic Diaphragm Compression Driver - K-771 1" Tweeter - Light-Weight Polyimide Diaphragm Compression Driver - Mated To A 90 Degree x 40 Degree Tractrix Horn - K-33-e 15" Woofer - Fiber-Composite Cone With A Folded Horn - 2 Binding Post Connections - (24.30"W x 26.00"D x 40.00"H) - (Black)