Features

Heresy IV: First introduced in 1957, the Heresy started life as a compact center channel speaker for the Klipschorn in three-speaker stereo arrays. The Heresy is a compact, three-way design that uses horn-loaded compression drivers for midrange and treble reproduction and a direct radiating 12"woofer for the low frequencies.

3-Way Design: The Klipsch Heresy IV loudspeaker features a three-way design that uses horn-loaded compression drivers for midrange and treble reproduction, plus a direct radiating 12" woofer for the low frequencies.

1" Tractrix Horn Loaded Tweeter: The 1" titanium diaphragm compression driver (K-107-TI) is coupled to a Tractrix Horn for smoother high-end response with greater extension, enhanced imaging, and more powerful dynamics.

1.75" Tractrix Horn Loaded Midrange: The 1.75" polyimidediaphragm compression driver (K-702) is coupled with a horn for detailed, accurate midrange sound.

12" Fiber-Composite Cone Woofer: The 12" fiber-composite cone woofer (K-28-E) delivers powerful low frequencies. The 12" woofer also employs a treated cloth surround for added efficiency and flexibility.

Crossover Network: For signal purity and perfect driver integration, the crossover (HF: 4500Hz/MF: 850Hz) on the Heresy IV features the finest components and Klipsch custom internal wiring.

Rear Tractrix Port: The rear Tractrix port of the Heresy IV floorstanding loudspeaker is perfectly matched to the cabinet and woofer, creating ideal airflow with minimal distortion and turbulence even at the lowest frequencies. Klipsch Tractrix ports have custom designed inner flares that help reduce air turbulence entering the port. Less turbulent air helps reduce port noise for cleaner, more powerful bass.

Dual Binding Post Speaker Terminals: The Klipsch Heresy IV loudspeaker has two sets of binding posts connected by jumpers. Using the dual binding posts, you can bi-amp or bi-wire the speakers. The binding post terminals will accept banana plugs (single/dual), pin-connectors, spade-connectors, and bare wire.

Bi-Wiring: Bi-wiring can provide noticeable improvements in the overall transparency of your loudspeakers. Run separate speaker wires to the low & high frequency drivers from a single amplifier (the upper set of binding posts are for the high frequency drivers; the lower set of binding posts are for the low frequency drivers).

Bi-Amping: Bi-amping allows you to use separate amplifiers for the high & low frequency sections of your loudspeaker for greater dynamic range & lower distortion. We recommend that your separate amplifiers have identical gain to preserve the speaker's voicing balance.

Product highlights:

- Handmade in Hope, Arkansas

- 3-way design

- Tweeter: 1" titanium-diaphragm compression driver with Tractrix® horn and wide-dispersion phase plug

- Midrange: 1-3/4" polyimide-diaphragm compression driver with Tractrix® horn

- Woofer: 12" fiber-composite cone

-Bass-reflex enclosure with rear-firing Tractrix port

- Frequency response: 48-20,000 Hz (±4dB)

- Sensitivity: 99 dB

- Nominal impedance: 8 ohms compatible

- Power handling: 100 watts continuous (400 watts peak)

- Book-matched real wood veneer finish

- Veneer leaves for the left and right speakers are crafted from the same piece of timber

- They're precisely arranged to provide an aesthetically pleasing "mirror" image at the splice

- Removable cloth grille

- Dual sets of speaker binding posts allow bi-amping or bi-wiring

- 15-1/2"W x 24-13/16"H x 13-1/4"D (each)

- Weight: 45 lbs. (each)

- Warranty: 10 years