Energy Connoisseur Series c-5 Speakers Great sounding speakers..... The Energy Connoisseur Series was introduced in 2002 and immediately set a new standard for performance at the price point. The C-5 is the smallest floor standing speaker in the Connoisseur line. Designed to be as compact as possible while providing the highest quality of sound, the award winning C-5 will not disappoint. The dual 6-1/2" woofer configuration, along with the Energy Tapered 3-way Crossover system, work in tandem with the 1" aluminum dome tweeter to provide the technological difference that you will be able to hear. Deep bass, clear midrange and distortion free treble response is the result. The sound is powerful, detailed and the stereo imaging is spectacular. Features : Magnetically Shielded, Tapered 3-way Bass Reflex, Front Vented Recommended Amplifier Power: Up to 150 watts Nominal Impedance: 4-8 ohms; Minimum Impedance: 4 ohms Frequency Response: 36-23Khz (+/- 3db): Useable Bass Response 30 Hz (-10db Anechoic): Anechoic Sensitivity 90dB (2 speakers in a typical room = 93dB) Crossover Point: 2 kHz, Woofer 1 to 2 KHz, Woofers 2 ~ to 550Hz Tweeter : Chambered 1" Aluminum Dome, Woofers : two - 6.5" Injection Molded Homopolymer with NBR/SBR surround Overall Dimensions: W - 7.75"/19.7cmH - 36"/ 91.2cm,D - 15.5"/91.2cm Approx. Shipping Weight: 47lbs/21.3kg Reviews: http://www.audioreview.com/cat/speakers/floorstanding-speakers/energy-speaker-systems/c-5/prd_496821_1594crx.aspx http://www.garrett-smarthome.com/reviews/speakers/energy/energyc5.htm