Energy C-300 Floor Standing Speaker (Single, Black) (Discontinued by Manufacturer) Single mid-sized floor standing speaker with excellent sound reproduction Equipped with a 6.5" composite fiberglas woofers and one 1" chambered aluminum dome tweeter Exclusive Hyperbolic(TM) dome tweeter Frequency Response: 40Hz-20kHz +/- 3 dB Removable high gloss base with floor spikes