STS 50 Two-Way Bookshelf (400-0230) Specifications Faxback Doc. # 14036 Speaker Frequency Response:........................................90 Hz-20,000 Hz Power Handling:.............................................40 Watts (RMS) Maximum Power:....................................................80 Watts Efficiency:..............................................88 dB SPL (1W/1M) Impedance:..........................................................8 Ohms Speaker Complement:................5 Inch (12.7 cm) High-Compliance Woofer 2 1/2 Inch (6.4 cm) Extended-Range Tweeter Enclosure:.............................................Acoustic Suspension Dimensions:...............................105/16 x 6 x 6 1/16 Inches (HWD) 26.2 x 15.2 x 16.5 cm (HWD) Weight:..................................................3.5 lbs. (1.6 kg) (ALL-03/09/95)