recision

YST-SW160

Digital Home Theater Subwoofer

With dual 20cm (8") drivers, Advanced YST and a 150W high power amplifier, this subwoofer is capable of delivering a powerful punch. There’s a BASS (Bass Action Selection System) mode for automatic adjustment of frequency response, Phase Control, Auto Standby and a High Cut Filter.

YST-SW90

Digital Home Theater Subwoofer

An all-discrete 100W high power amplifier and the highly efficient Advanced YST system give this subwoofer exceptional performance capabilities. A Continuously Variable High Cut Filter ensures best matching with room conditions and other speakers. Plus Auto Standby and more in a slim design.

YST-SW45

Digital Home Theater Subwoofer

Using the Advanced YST system to deliver deep bass with 70 watts of power from a compact body, the YST-SW45 provides tremendous value. It also offers useful features like Continuously Variable High Cut Filter, Auto Standby and Two-Way Input. A great choice for anyone considering a dual subwoofer system.

Advanced Yamaha Active Servo Technology (Advanced YST) combines the excellent imaging and point source characteristics of small speakers with the superb bass response of large ones. The key to its success is a Helmholtz resonator—a small port in the speaker cabinet. The cabinet volume and port size are scaled to an exact ratio, which causes small amplitude input signals to be magnified without distortion. And because zero speaker impedance results in the best reproduction of

deep bass tones, the Advanced YST system includes a negative output impedance amplifier. By precisely matching it to the Helmholtz system, the combined amp- speaker impedance become zero. This enables the compact cabinet to reproduce bass frequencies with close to perfectly flat response. You’re assured of getting the highest levels of sound pressure and overall performance.

To fully optimize bass performance in a high- end system, two subwoofers are recommended.

(dB)

90

80

70

 

Conventional speaker

 

 

 

 

Speaker + YST Subwoofer

 

 

 

 

Increased bass reproduction capability

20

50

100

20,000 (Hz )