Innovative Design and Technology Impressive Subwoofer Performance.

25mm (1") MDF Cabinet

The beautifully finished cabinet uses ultra-thick (25mm; 1") medium density fiberboard for minimum resonance.

Advanced YST

A unique system in which the speaker and amplifier work together to cancel out impedance so the speaker unit has a perfectly linear motion.

The YST-SW800 and YST-SW320 use Yamaha’s Advanced YST, as well as brand new technologies such as QD-Bass to deliver exceptionally crisp, clean, powerful bass. They have extremely efficient, high- power amplifiers built in, and use extra- long stroke, drivers that provide outstanding power with low distortion. The YST-SW800 also introduces new power supply technology and a driver featuring a Dual-Bias system with a 100mm (4") diameter voice coil for the ultimate in power and performance. But whichever Yamaha subwoofer you choose, you’ll get dynamic bass that will bring out the full potential of your digital music and movie sources.

Extra-Long Stroke Drivers

Extra-long stroke, pure spruce multi-range drivers provide outstanding power with low distortion.

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.

High Power Amplifier

The YST-SW800 amplifier is extremely efficient and features an entirely new type of power supply with superior load characteristics, minimal noise, higher efficiency and greater stability.

QD-Bass Technology

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 (not used in competitors’ down-firing subwoofers) negate any effects caused by the floor surface and reduce resonance between sound waves reflected from the floor and the unit. Also, most other systems use circular cones, but by radiating in four directions to avoid the legs of the cabinet, QD-Bass reduces turbulence caused by reflection from the legs. Changing the height of the square pyramid varies the acoustic load, permitting relatively simple