Description

First introduced in 1957, the Heresy, a three-way design, began as a compact center channel speaker to complement the Klipschorn® in three-speaker stereo arrays. In 1985, we made some modifications and improvements to this model and re-released it as the Heresy II.

The Heritage Series Heresy II three-way speaker delivers exceptionally big sound, full of the moving emotional elements that make your music such an important part of your life. Efficient high-frequency and mid-range horn drivers, along with a reliable 12-inch bass driver, work together to create a very smooth, dynamic, low-distortion sound.
Although no longer in production, Heresy II speakers are still owned and listened to by Klipsch fans around the world. To connect with other people who are passionate about audio and interested in Klipsch products, visit our open forum message board.

FREQUENCY RESPONSE: 63 Hz - 20.000 Hz (±3 dB)
SENSITIVITY: 97 dB (at 1 watt/1 m)
POWER MANAGEMENT: 100 W max continuous (400 W peak)
MAXIMUM ACOUSTIC OUTPUT: 114 dB SPL
NOMINAL IMPEDANCE: 8 Ω
TWEETER: K-76-K polyetherimide diaphragm compression driver, 1" (2,54 cm)
MIDDLE: K-53-K phenolic diaphragm compression driver, 1,75" (3,81 cm)
MEDIUM FREQUENCY HORN: Exponential horn
WOOFER: K-24-K composite fiber cone, 12" (30,48 cm)
CROSSOVER FREQUENCY: HF: 6000 Hz; Low frequency: 700 Hz
CASE MATERIAL: MDF
CONTAINER TYPE: Sealed
FINISHES: Walnut lacquered, Mahogany lacquered, Medium oak lacquered, Raw oak, Black lacquered
DIMENSIONS: 543 x 394 x 337 mm (21.375" x 15.5" x 13.25")

WEIGHT: 16,8kg (37lbs)

Specifications

Diffuser type	passive
Sensitivity	97 dB
Nominal impedance	8 ohm
Frequency response	63Hz - 20.000Hz (±3dB)
Route configuration	3
Cabinet type	sealed
Maximum manageable power	100
Maximum sound pressure (1m)	114 dB
Tweet	K-76-K 1" (2,54 cm) polyetherimide diaphragm compression driver
Midrange	K-53-K 1,75" (3,81 cm) phenolic diaphragm compression driver
Woofer	K-24-K composite fiber cone, 12" (30,48 cm)
Crossover frequency	6000 Hz (HF); 700 Hz (low frequency)
Cabinet material	MDF
Dimensioni	W 54,3 × H 39,4 × D 33,7 cm
Weight	16,8 kg
Trim	Walnut lacquer, Mahogany lacquer, Medium oak lacquer, Raw oak, Black lacquer
Year of production	1985
country of origin	USA

About the brand

Klipsch is an American brand of loudspeakers and hi-fi components founded in 1946 by Paul W. Klipsch in Arkansas, USA. The company positions itself in the premium segment of the audio market, offering solutions for discerning audiophiles and high-fidelity enthusiasts seeking superior sound performance and innovative technologies.
Klipsch's corporate philosophy is based on the fundamental principles established by its founder: maximum efficiency, minimum distortion, and controlled directional control. Paul Klipsch, an engineer and acoustic pioneer, developed the first prototypes in his home in Hope, Arkansas, with the goal of creating loudspeakers capable of reproducing live sound with absolute fidelity. missionThe company's motto has remained unchanged for over seventy years: "The sound closest to the original." This dedication to sonic purity has made Klipsch one of the most respected brands in the world of high fidelity, with a solid reputation among the most discerning audiophiles. The company combines traditional American craftsmanship with ongoing technological innovation, maintaining production of some flagship models in the United States while constantly investing in research and development to perfect its audio solutions.
Klipsch's signature technologies include the renowned Tractrix Horn Technology, a patented horn system that ensures uniform dispersion and reduced distortion. Linear Travel Suspension (LTS) optimizes transducer movement for more precise response, while Cerametallic technology represents the evolution of high-performance composite woofer cones. Injection Molded Graphite (IMG) characterizes the Reference Series tweeters, offering superior detail and dynamics. These proprietary innovations distinguish Klipsch products in the global high-fidelity landscape.
The Klipsch product line ranges from the Heritage Series floorstanding speakers, which retain their original vintage design, to the modern Reference Premiere bookshelf speakers. Klipsch's transistor integrated amplifiers are characterized by high power and precise control, ideal for effectively driving the company's loudspeakers. The tube integrated amplifier category offers solutions for lovers of warmer, more immersive analog sound.
The Heritage Series represents absolute excellence with iconic models such as the Klipsch Cornwall IV and Heresy IV, floorstanding speakers that use updated original horn technology. The Reference Premiere line includes floorstanding and bookshelf speakers with Cerametallic drivers and LTS tweeters, perfect for high-end stereo systems. The RP Series offers more affordable solutions while maintaining high technical performance. For source materials, Klipsch offers high-quality CD SACD DVD players and partnerships with specialized turntable manufacturers to complete the ideal stereo system.
International accolades confirm Klipsch's excellence: numerous awards from the American and European audio press, and rave reviews in magazines such as Stereophile, What Hi-Fi, and Sound & Vision. The Heritage speakers have received design accolades from the industry press, while the Reference Premiere models consistently receive recognition for their value in the premium segment.
Klipsch's target audience includes experienced audiophiles, live music enthusiasts, and audio professionals who seek dynamics, efficiency, and fidelity in sound reproduction. The price range extends from entry-level models around €500 to the flagship Heritage models costing over €10.000 per pair, covering a wide range of budgets without compromising the brand's signature sound quality.
In Italy, Klipsch is distributed through a select network of specialized high-fidelity retailers who guarantee qualified advice and professional technical support. Authorized centers offer after-sales support, maintenance, and original spare parts for all products in the range, ensuring Italian audiophiles a comprehensive and reliable service to maximize the value of their Klipsch stereo system.

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