NOVUS 6.5'' Tripolar Surround Speaker

NOVUS 6.5'' Tripolar Surround Speaker Pair, 
Frequency Response (+/- 3dB) 80-30,000 Hz, 
Impedance 4 Ohms, Sensitivity 90dB, Power 
20-120 Watts, Tweeter 1 x 1" Silk-Dome 
Tweeter with ferrofluid, Woofer 1 x 6.5" 
Aramid-Fiber Cone Driver, Full-Range 2 x 4" 
Aluminum Cone Full-Range Drivers, Driver 
Configuration Tripolar Design, Enclosure Type 
Anti-Resonant, Internally Braced, Sealed