Yamaha KS-SW100 speaker for [selected] PSR Series Keyboards


We were blown away by the KS-SW100 when our engineers first showed it to us. Connecting to a professional or semi-professional keyboard’s Left/L+R output (it doesn’t work with keyboards whose only output is the headphone socket), the KS-SW100 works with the keyboard’s own speakers effectively creating a 2.1 speaker system.

The effect is incredible; bass is deeper, richer and ‘fuller’ as you’d hope – but what we didn’t expect was the presence and clarity it adds to the mid and treble, truly unlocking the potential of the keyboard’s sound engine and transforming its sound quality.

Have a question? Give us a call on 01295 266 788 and we’ll be happy to help!

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Designed to significantly enhance the sound of selected PSR Series home keyboards, the KS-SW100 works with the keyboard’s on-board speakers transforming the sound.

  • New Twisted Flare Port contributes to clear and tight bass
  • Advanced YST II (Yamaha Active Servo Technology II)
  • 20 cm (8”) cone woofer
  • Stylish addition to any room

The KS-SW100 works with keyboards with profesional Left and Right outputs (it’s not suitable for keyboards which only have a headphone output or shared headphone/output connection).

We recommend it for:

  • Yamaha PSR-EW400
  • Yamaha PSR-S670
  • Yamaha PSR-S700
  • Yamaha PSR-S710
  • Yamaha PSR-S750
  • Yamaha PSR-S770
  • Yamaha PSR-S900
  • Yamaha PSR-S910
  • Yamaha PSR-S950
  • Yamaha PSR-S970
  • Yamaha PSR-A3000


Excellent Bass for Music Performance

This compact subwoofer incorporates a number of our advanced, high performance bass technologies, including Twisted Flare Port and Advanced YST II (Yamaha Active Servo Technology II).

This results in sensational bass response that adds significantly to the enjoyment of music performance.

  • New Twisted Flare Port contributes to clear and tight bass
  • Advanced YST II (Yamaha Active Servo Technology II)
  • 20 cm (8”) cone woofer
  • Stylish addition to any room

New Twisted Flare Port Produces Clear and Tight Bass

The all-new Twisted Flare Port takes advantage of extensive subwoofer development experience. The flared, gently twisting shape diffuses the vortex of air generated around the edge of the port, creating a smooth flow of air. This reduces extraneous noise not present in the original input signal and provides clear, accurate low frequency reproduction. From special effect sounds in movies to the atmosphere of a live venue, you hear bass that is clear, tight and realistic.

Advanced YST II for Awesome Deep Bass

Developed by Yamaha, the Advanced YST II (Yamaha Active Servo Technology II) combines negative-impedance and constant-current principles to drive the speaker cone with even tighter control than the previous version. Using Advanced Negative Impedance Converter (ANIC) circuits, this system dynamically optimizes effective speaker impedance to maintain excellent linearity. This means more stable and accurate low range response, not to mention higher sound quality.

Stylish Addition to Any Room

The gently rounded form with a slanted front surface presents a stylishly elegant appearance. Designed to be unobtrusive, It’s sure to look beautiful in a living room or home theatre room.

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




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