Vienna Sphere 7-30 Wood Cone ™

The listed price includes a stereo pair of loudspeakers.
Subwoofer companion. 

(Full-Range Wood Cone Satellite 2.1 System), 6.5” full-range wood cone drivers with matched wooden whizzer cone and aluminum phase plug aligned with acoustic-suspension in large baffle-less spherical cabinets, rated for 30 watts of music power at 8 ohm, sensitivity of 91. dB/1M, freq. resp. of approx. 50Hz to 20 kHz, pairs with any high-quality 3.5-30 watt (RMS) / channel power amplifier (at 8 ohm nom.), approximate 110 degree dispersion for even off-axis response, low-distortion ferrite magnet structure, no crossover circuit for superior time-coherence and tonal preservation, closed box “Q”: 0.75 Q(tc) (near the “Butterworth Response”), designed for balanced power-delivery and mechanical damping to reproduce dynamic sound that is unusually natural and full.