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KCII Loudspeaker


  • Description
  • Features
  • Specifications
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Pure Analog Controlled Directivity Open Baffle Loudspeaker.The KC II is the first under $US2500.00 open baffle Emerald Physics speaker that runs with no DSP and can be run with a single amp. We believe it is a breakthrough in a speaker in this price range. With its new Emerald Physics designed 8” “Godzilla” point source professional driver system and Aperture bass loading, the KC II is a true 4 driver 3-way open baffle design. Open baffle presents music without the box coloration's of typical speakers. Our dipole bass/midrange presents a huge sonic soundstage that offers superb imaging with our point source midrange/tweeter design. Cutting edge sonic performance establishes a new level of realism.




  No DSP and Single Amp drive - Does not require bi-amplification, although it can be bi-amped or tri-amped for even better performance. 

  • 2  New Emerald Physics EP10 woofers
  • 8” Emerald Physics "Godzilla" midrange with 1" Emerald coincident (screw in) point source Tweeter
  • World Class sonic performance in a compact and easy to place package
  • Incredible imaging and soundstage reproduction. 
  • Open Baffle Bass speed and articulation. 
  • Works well in small rooms as close as 2 feet from the rear wall. 

Charcoal Black powder coated MDF is standard finish.

Optional finishes available

Shown in cocobolo


System Type
Passive 3-way / 4-driver Dynamic Dipole
Frequency Range
46Hz–22kHz +/-3dB typical in-room response from target curve, 35Hz with optional BOM adjustable 4-pole Linkwitz Transform Function analog EQ
Frequency Linearity
+/- 1.0 dB from 100Hz-20KHz from target curve
6 ohms nominal, 4 ohms minimum
Recommended power
25-200 watt amps
Max Power input
150W RMS, 300W program
94dB 2.83V @ 1M @ 1kHz
Emerald Physics Screw-In 1 inch exit Titanium compression Tweeter with waveguide
Emerald Physics Godzilla 8” Mid-Woofer/Midrange
Aperture Bass Propagation Loading with Mechanical at 300Hz + 2nd order acoustic @300 Hz for the woofer, 4th order acoustic @1250Hz for the tweeter
2 X Emerald Physics custom 10” paper cone Woofers w/ Dual Pleated Surrounds
41.25"H including base x 19.25"W at the base (12 7/8"W at the top) x 7.5"d to back of midrange/tweeter x 13 1/8" D including the base from front to rear. The panel is 2" deep
Net: 65lbs each, Shipping at 89lbs each box






"Emerald Physics was, as usual, showing exceptional products at really exceptionally low prices"
“This system put many five-figure systems to shame”
"it was a sure sign of the apocalypse. Nice work, gents."
Robert Harley of The Absolute Sound said:
Perhaps the best overall value at the show was the Emerald Physics KCII open-baffle loudspeaker system ($2499) driven by the company’s EP100.2SE hybrid power amplifier. The whole system was priced at just under $6k at retail, but offered at $3799. This system put many five-figure systems to shame.
Best Sound (for the money): Emerald Physics KCII speaker system ($2495/pr.) driven by Emerald’s EP100.2SE amplifier and Anti-Mode’s Dual 2.0 as preamp playing CDs from a modest Marantz player. This demo featured among the most involving overall sound that I heard at the show.
Paul Seydor of the Absolute Sound



KC II powder coat

KC 11 crossover

KC11 black satin

Optional Cocobolo Tricoat finish