Klipsch Heresy Iv Heritage Series Three Way Loudspeaker - 100/400 W - 48-20k Frequency - 8 ohms Impedance - Reduced Electrical Denigration - Rear Port for Bass Input - Bi Amp Output - Broader Sweet Spot - Titanium Diaphragm - Mdf Woof Panels - (15.50"W x 13.25"D x 24.81"H) - (Walnut)