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Yamaha KS-SW100 Compact 8" Subwoofer for Keyboard Instruments

Yamaha-only advanced, high-performance bass technologies, such as a Twisted Flare Port and Advanced YST II (Yamaha Active Servo Technology II), are included into this small subwoofer for keyboard instruments. As a result, the bass response is sensationally clear, which greatly enhances your musical experience whether you're playing or just listening.

Miniature Subwoofer
Clear and tight bass is enhanced with New Twisted Flare Port.
20 cm (8") cone woofer with advanced YST II (Yamaha Active Servo Technology II) for stylish room expansion.
Clear and tight bass are produced with a new twisted flare port.

The brand-new Twisted Flare Port makes use of sophisticated technologies for subwoofer creation. The flared, gently sloping design diffuses the air vortex produced at the port's border, resulting in an airflow that is smooth 

of air. By doing so, unwanted noise that was not there in the original input signal is reduced, and clear, accurate low frequency replication is produced. You hear bass that is crisp, tight, and lifelike, from special effect sounds in movies to the ambience of a live venue.

Deep Bass YST II Advanced

The Advanced YST II (Yamaha Active Servo Technology II), created solely by Yamaha, combines negative-impedance and constant-current principles to drive the speaker cone with even more precise control than the first iteration. This system dynamically optimises effective speaker impedance using Advanced Negative Impedance Converter (ANIC) circuits to preserve outstanding linearity. As a result, the low range response will be more accurate and stable, in addition to having better sound quality.

Specifications 

• Subwoofer
• Driver    20 cm (8”) cone
• Dynamic Power    100 W (5 ohms)
• Output Power    50 W (100 Hz, 5 ohms, 10% THD)
• Frequency Response    28–200 Hz
• Advanced YST    Yes
• Twisted Flare Port    Yes
• Dimensions (W x H x D)    291 x 292 x 341 mm; 11-1/2” x 11-1/2” x 13-3/8”
• Weight    8.5 kg; 18.7 lbs.