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See the 3 part KC II Pro audio review at:

The KC II Pro is an upgraded version of the KC II. It uses our state of the art Neo Polyester tweeter from the top of the line EP2.8 and EP4.8 speakers. This tweeter offers amazing resolution, increased transparency and even greater dynamics compared to the standard KC II tweeter. In addition, the Pro uses an upgraded Special Edition crossover with higher quality parts. Finally, it comes with an nicer upgraded $600.00 finish and our $500.00 BOM 4-pole Linkwitz Transform Function analog EQ to extend the bass response to 35Hz. 

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System Type
Passive 3-way / 4-driver Dynamic Dipole
Frequency Response
46Hz–22kHz +/-3dB typical in-room response from target curve, 35Hz with included 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 custom 1” Polyester compression driver w neo magnet & copper clad aluminum VC
Emerald Physics Godzilla 8” Mid-Woofer/Midrange
Apature bass 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 by UPS
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