YST-SW20

This item has been discontinued or updated and may or may not be still available at your local dealer.

Exclusive Yamaha system allows the amp and the speakers to work together to boost the power of a stereo speaker's output. Instead of an ordinary woofer unit, the speaker has a Helmholtz Resonator that intensifies the sound waves inside until they are output as much stronger sounds. Total impedance (resistance to current flow) has to be zero, so the amp's circuitry produces negative impedance, canceling out the speaker impedance. The result is bass sound that is very powerful.

The speaker can be located near a TV or video monitor without distorting the picture.

The subwoofer will turn inself on automatically when it senses a music signal. It will also turn itself off automatically shortly after the music signal stops.

Allows a wide application from audio to lower-powered HiFi/ A/V and multi-media systems.