Most comments above do not apply to KP201. I have 2 of them as mains in my 5.1 HT. They are identical to Heresy II re driver complement and sound. Perhaps slightly different cabinet volume. Crossovers are slightly heavier duty than HII but same component values. I recommend replacing all capacitors to bring crossover parameters back into factory spec. You may also prefer the sound of Crites titanium diaphragms for the tweeters, an easy swap but will cost you a lot for 6! Mine are stock exc. for new caps and sound excellent with good music or movie content. They are "unforgiving" of mediocre content. A sub is a must for HT. I got a killer deal at $150/pair. You got a mass-murder deal, congrats! Search
Klipsch Forums for lots of great information, especially from Moray James and colterphoto1.
Specs:
BUILT FROM: 2001
BUILT UNTIL: 2004
COVERAGE ANGLE: 90(o) Horizontal x 60(o) Vertical
CROSSOVER FREQUENCY: 550Hz and 6kHz
DIMENSIONS: 21.8" (55.4cm) x 15.875" (40.5cm) x 13.25" (33.6cm)
DIRECTIVITY INDEX: 8dB (+-)2dB
FREQUENCY RESPONSE: 60Hz - 20kHz(+-)4dB (-10dB @ 43Hz) @ 3 meters, 1/2 space anechoic
INPUT CONNECTIONS: Red/black five-way binding posts and Neutrik Speakon(r) NL-4
MAX CONTINUOUS OUTPUT: 115dB
NOMINAL IMPEDANCE: 8 ohms, 4.5 ohms minimum at 550Hz
POWER HANDLING: 100 watts (23.7V) (400 w peak)
SENSITIVITY: 97dB @ 2.83V, 1 meter, 1/2 space anechoic
WEIGHT: 38 lbs. (17.3kg)
MIDRANGE: K-53-K 1.75" (3.81cm) Phenolic diaphragm compression driver
TWEETER: K-76-K 1" (2.54cm) Polyetherimide diaphragm compression driver
WOOFER: K-24-K 12" (30.48cm) Fiber-composite cone