The Sony SS-747 (often called the Sony CarboCon SS-747) is a vintage, Japanese-made floor-standing hi-fi speaker system. Revered for its retro aesthetics and warm sound, it features a 10-inch carbon woofer, a passive bass radiator, and a titanium dome tweeter.
 
Key SpecificationsType: 2-way or 3-way bass reflex system (depending on regional variations and passive radiator inclusion).
Power Handling: 80W max input (50W nominal).
Impedance: 8 Ohms.
Sensitivity: 91 dB.
Drivers: 10" (25cm) Carbon cone woofer, 10" (25cm) passive radiator, and a 3cm dome tweeter.
Dimensions: 37cm (W) x 33cm (D) x 80cm (H).
Weight: ~16.3 kg per speaker