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JBL Synthesis® K2 S9900 Floorstanding Loudspeaker-K2 S9900

Model #: K2 S9900
JBL Synthesis
At a Glance

JBL Synthesis® K2 S9900 Floorstanding Loudspeaker with separate crossover boards and heavily-braced curved front

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Get to know this product.

Project K2 S9900, one of the most advanced and sophisticated loudspeakers in the world today, is the latest expression in technology that is deeply rooted in more than 60 years of tradition. Like the Paragon and Hartsfield, the K2 S9900 was built around compression driver technology and addressed a more refined stereo image than was previously considered technically feasible. The K2 S9900 continues the tradition of the K2 S9800 and also incorporates key design elements from the Project Everest. Despite its 21st century power and sophistication, Project K2 S9900 is a synthesis of tradition and technology.

  • 15-inch woofer with Alnico magnet and 100 mm voice coil, cast frame and 16 kg motor structure
  • High frequency compression driver and horn with 4-inch magnesium diaphragm
  • Precision-molded Sonoglass® HF horn throat section integrated with curved baffle
  • Ultra-High Frequency compression driver with1-inch beryllium diaphragm
  • Sonoglass® UHF horn mated to a die-cast aluminum housing
  • Separate crossover boards for each frequency section
  • Heavily-braced curved front and rear enclosure eliminates cabinet-induced coloration


Tweeter Composition:Magnesium
Woofer Composition:Paper


Crossover Type:900 Hz (24dB/octave) 15 kHz (24dB/octave, high-pass only)
Sold As:Each


Sensitivity:93 dB
Frequency Response:48Hz – 50kHz

Misc. Specs

Product Weight182
Depth (in.)13.81
Height (in.)47.31
Width (in.)22
Woofer Size15"
WarningProposition 65 Warning for California Residents