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 (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.

• Advanced YST provides strong and accurate bass
• 250W Amplifier power provides movie theater like bass
• Down firing 10" long stoke cone driver
• BASS tailors to video or music with a switch
• Down firing QD-Bass technology outputs more efficiently
• Signal sensing on/off
• Dual inputs
• E-way Speaker terminals
• Phase control (normal or reverse)
• Frequency response: 20-160Hz
• Dimensions: 13.75"W x 16.94"H x 15.06"

This item can be returned within 30 days after receiving your item.