YST-SW90

Yamaha's Advanced Active Servo Technology is a complementary amplifier/speaker system utilizing negative impedance feedback in the amp and a Helmholtz resonator in the speaker to provide strong and accurate bass from small speakers.

High amplifier power and an 8" spruce cone driver deliver strong bass for music and home theater sound. the YST-SW90 has a frequency range of 23 to 170 Hz.

The subwoofer is magnetically shielded so it can be placed near a TV monitor or receiver without fear that it will degrade the picture.

The user adjustable continuously variable high-cut filter sets the highest frequency the subwoofer will deliver. It can be set anywhere from 50 to 150 Hz. For instance, if the filter is set at 75 Hz, only frequencies 75 Hz or below will be delivered by the subwoofer. This allows the sub's output to be matched to the other speakers in the system and the room's acoustics for a seamless presentation.

The volume control permits the perfect matching of the sub's output to the overall volume of the system.

For convenience, the YST-SW90 has a signal sensing circuit. When the subwoofer detects and audio signal, it turns its power on. When it senses no signal for several minutes, it shuts itself off.

Makes it easy to phase the subwoofer with the other speakers in your system.

The subwoofer can be oriented either vertically or horizontally, making placement within the room easy.

Two sets of inputs allow the versatile subwoofer to accept either line level or speaker level input signals.

Yamaha's three-way speaker terminals accept banana plug and a variety of other connectors, as well as speaker wire.