Don't let the compact cabinet or the affordable price tag fool you — the NS-6390 delivers big sound that doesn't skimp on Yamaha's trademark musical precision. It features a 3-way design for impressive power handling, and solid, accurate performance from top to bottom. The NS-6390's video-shielded, acoustic suspension enclosure incorporates a 3/4" fluid-cooled dome tweeter, a 4" midrange, and an 8" woofer. You'll love the clean, punchy sound! Both the midrange and bass drivers feature inverted dust covers for added durability.


  • acoustic suspension enclosure
  • video-shielded
  • frequency response 45-20,000 Hz (±3.5dB)
  • 8-ohm impedance
  • sensitivity 91 dB
  • handles up to 140 watts
  • black vinyl finish
  • 16-1/4"H x 10-1/4"W x 13-1/4"D
  • warranty: 2 years

Priced per pair

Why choose bookshelf speakers?

Bookshelf speakers may be small in size, but they can deliver surprisingly big sound. Some ultra-compact models even fit on a desktop. Most are right at home in tight spaces like shelves, so they're usually good choices for your home theater's rear channels. For the best performance, try placing bookshelf speakers on solid speaker stands to help the sound really "open up." If you want full bass impact, add a powered subwoofer and enjoy punchy sound that's as deeply satisfying as that of floor-standing speakers.

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Hands-on research

What's in the box?

Download owner's manual

  • 2 Black bookshelf speakers
  • Two 99" lengths of speaker wire
  • Warranty sheet
  • Owner's Manual

Features and Specs

Enclosure Acoustic Suspension
Video Shielded Yes
Tweeter Type Balanced-dome
Tweeter Size (inches) 0.75
Midrange Size (inches) 4
Woofer Size (inches) 8
Woofer Composition N/A
Woofer Surround Treated cloth
Power Range 10-140
Sensitivity 91 dB
Impedance (Ohms) 8
Frequency Response 45-20k Hz
Connector Type Spring clip
Bi-amp Inputs No
Height (inches) 16-1/4
Width (inches) 10-1/4
Depth (inches) 13-1/4
Weight (pounds) ---
Mounting Bracket Included No
Recommended Stand Height (inches) 21-24
Parts Warranty 2 Years
Labor Warranty 2 Years

Product Research

Power Handling Note


Three-Way Acoustic Suspension Speaker: Yamaha's NS-6390 utilizes an 8" Hi-Polymer coated woofer and 4" aluminum-color midrange, both with inverted dust caps, and a 3/4" Ferro-fluid cooled balanced-dome tweeter.

Magnetic Shielding: Each speaker is magnetically shielded, so they can be placed near a TV or video monitor without degrading the picture via stray magnetic fields.

Spring-Type Terminals: The spring clips will accept pin connectors and bare wire.

New Grille Design: The new grille design and satin grille cloth provide an attractive and acoustically transparent protective cover for the drivers.

Power Handling Note

Power Handling: The nominal (average) power input rating is 70 watts, and the maximum RMS power handling is 140 watts. Yamaha does not specify a peak power rating.

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