The Klipsch Heresy IV is the compact three-way that started life in 1957 as a center-channel companion to the Klipschorn. It uses a 12-inch woofer, a K-702 polyimide midrange compression driver, and a K-107-TI titanium tweeter, all horn-loaded above the bass, in a stand-mounted cabinet with a new rear-ported bass design. Assembled in the USA with book-matched veneers. Sold and priced per pair.
Why This Model Matters
The Heresy earned its name because it "broke the rules" as the first Klipsch speaker not to be fully horn-loaded across all frequencies. Nearly seven decades later it remains the most accessible entry into the Heritage line, delivering 99 dB sensitivity and the family's signature dynamics from a small footprint that fits nearly any room.
Highlights
Three-way, horn-loaded midrange and treble with a 12-inch woofer
K-702 midrange and K-107-TI titanium tweeter compression drivers
New rear-ported low-frequency design for deeper, cleaner bass
99 dB @ 2.83V/1m sensitivity; 8-ohm nominal; 48Hz-20kHz (±4 dB)
100W continuous / 400W peak power handling
Offered in Red Oak, American Walnut, American Auburn, and Black Ash
Who It's For
The ideal starting point for anyone entering the Heritage world, or for smaller rooms where floor-to-ceiling towers won't fit. On dedicated stands, the Heresy IV rewards low-power tube amplifiers and vinyl front-ends with lively, efficient horn sound.
