Klipsch Heresy Timeline

This is a timeline for the evolution of the Klipsch Heresy speaker from inception to the current date.

Date	Event	Media
1957	The Heresy is introduced as a center channel for Klipschorns®. It is the first Klipsch speaker that does not require corner placement. This model utilized the K-1000 midrange horn
1957-1959	Both 8" and 12" woofer versions were produced during this period.
1967	The H-700 is introduced in the now familiar format using a 12" K-22 woofer, K- 700 horn / K-55-V mid-range and the K-77 tweeter. From this date through the end of the model run in 1985, various networks were used Type C, Type E and Type E-2) that were all variations on the same design.
Early 1970s	The Heresy's name is changed from H-700 to Heresy.
1985	The Heresy II is introduced using a mid-range and tweeter driver set that, for the first time since the introduction of the H-700 differed from that of the Klipschorn®. Component designations were: Woofer K-24-K, Midrange K-701 horn and K-52 driver, Tweeter K-75-K horn and K-76 driver. This was the first Heresy model to discontinue the use the traditional alpha numeric network designations (Type E-2). All of the drivers in the Heresy II were front mounted to reduce the diffraction effects caused by rear mounting and firing through the motor board.
May 2001	The number of finish, grille and riser variants is reduced from nearly 100 to 10.
Sept 29, 2005	The Heresy III is introduced featuring increased sensitivity (3dB), Titanium mid-range and tweeter diaphragms a Tractrix tweeter horn and bi-wire inputs. Component designations are: Woofer K-28-E, Midrange K-53-Ti (K-701 horn and K-53-Ti driver), Tweeter K-107-Ti (K-79-T horn and K-100-Ti driver). Finish, grille and riser variations are further reduced from 10 to 3. Cherry, Walnut, and Black Ash are the available finishes.