Subwoofer Yamaha YST-FSW030

Powerful Subwoofer with Advanced Technology! Fits-anywhere design, QD-Bass (Quatre Dispersion Bass) technology, Advanced YST (Yamaha Active Servo Technology) and 130W Dynamic Power. The colours and finishes shown may vary from those on the actual products. Some colours may not be available in some countries.Advanced YST Advanced Yamaha Active Servo Technology (Advanced YST) is a unique system in which the speaker and amplifier work together to cancel out impedance so the speaker unit has a perfectly linear motion. Advanced YST helps to ensure the highest levels of sound pressure and overall performance. QD-Bass Technology QD-Bass (Quatre Dispersion Bass) technology uses down-firing drivers with square, pyramid-shaped reflective plates to radiate the sound efficiently in four horizontal directions. The reflective plates negate any effects caused by the floor surface and reduce resonance between sound waves reflected from the floor and the unit.