Heresy IV

£3500.00
  • All-new high fidelity network
  • Features a rear Tractrix port
  • Designed & assembled in the USA

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How To Buy

As UK distributors for the brands we represent, our main focus is to give you all the information you need to help assist with your purchase. Once you have the information you need, we want to make the purchase process as simple as possible. So we give you up-to three options on how to buy our products.

Find Your Local Retailer

Our preferred option is for you to visit a nearby store and buy what you need locally. Our authorised stockists are some of the finest specialist hi-fi retailers in the country, and they're equipped to give you the best after-sales and set-up advice possible - all in person. To find your local retailer, either click the 'Buy In-Store' button on your product page for exactly the right recommendation, or head to our comprehensive Where To Buy tool.

Buy Now, Collect Locally

If you want the added convenience of only having to pop-in to store when you know the product you want has arrived, you can use our Click & Collect-style checkout process. With Buy Now, Collect Locally, your purchase takes place online and the product is then delivered direct to your local supporting retailer; ready for you to collect when you're ready. Click here to find out more about Buy Now, Collect Locally.

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Klipsch Heritage Loudspeakers

Because of its size, the Heresy offers the greatest degree of placement flexibility in the Heritage series. First introduced in 1957, this three-way horn-loaded loudspeaker is still able to deliver the awe-inspiring Klipsch sound that fans around the world know and love.

COMPACT, THREE-WAY LOUDSPEAKER
The Heresy was originally introduced in 1957 with a compact three-way design utilising a 12” woofer and horn-loaded midrange and tweeter. In 2006, the Heresy III was upgraded with a more powerful woofer and a bi-wire network as well as midrange and tweeter compression drivers, and features a titanium diaphragm for smooth and accurate definition.

DRIVERS
The Heresy IV incorporates an all new K-702 midrange compression driver, featuring a polyimide diaphragm for exceptional detail and dynamics. The K-702 midrange is mated to the K-704 Tractrix® horn, providing you with a wide coverage pattern and smooth response throughout the listening area. The K-107-TI titanium diaphragm high frequency driver features an all new wide dispersion phase plug, providing exceptionally even high frequency dispersion throughout the listening area, making for a wider, more accurate sweet spot.

NETWORK
The Heresy IV has been completely revoiced from its predecessor, utilising premium componentry in an all new high-fidelity network — minimising electrical degradation throughout the circuitry — for truer to life sound with best in class efficiency and power handling. The new network draws from the classic three-way steep slope design of the legendary Klipschorn, La Scala and Cornwall speakers.

TRACTRIX® PORTS
For the first time in its long legacy, the Heresy now features a rear port – improving low frequency extension by almost 10Hz, for room filling bass. Utilizing Tractrix geometry, the all new Heresy IV ports allow for the most efficient, fastest air transfer in their class, which reduces port noise for punchier low 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.

BI-AMP INPUT PANEL AND BINDING POSTS
The Heresy’s premium, aluminium input panel accommodates large, high-quality speaker cables. Strong, versatile and quality binding posts provide the capability for bi-wiring or bi-amping. The quality continues with Audioquest Type 4 with Star-Quad Geometry internal wiring featuring carbon-loaded insulation, nitrogen-injected PE and solid long-grain copper conductors ensuring the purest signal transfer from input cup to crossover network to drivers.

HIGH EFFICIENCY
Nothing in the industry sounds as big or is as efficient as the Heresy, given its relatively compact size. This model offers the greatest degree of placement flexibility of the Heritage series. The bonus slant riser base can be removed for cabinet installations.

MATCHED PAIRS
Every pair of Heritage series loudspeakers is grain-matched, using wood veneer panels that come from the same timber. Each cabinet is carefully matched so that each speaker in the pair is practically indistinguishable from the other. The speakers move seamlessly together through the factory, and each finished product is inspected and labelled with sequential serial numbers, ensuring that your Heritage series speakers leave the factory as a meticulously crafted set.

BUILT TO LAST
While each and every component of the Heresy IV is built to last. Klipsch has always recognised the unique and critical role of a loudspeaker’s cabinet in the sound reproduction process. From the craftsmen in Hope, AR to the engineers in Indianapolis, IN, Klipsch have always put an extraordinary emphasis on cabinet design. The Heresy enclosure is assembled using only the highest-grade adhesives and fasteners. The riser base can be removed for cabinet installation or placement on optional stands.

Key Features:

  • All-new K-702 midrange compression driver, featuring a polyimide diaphragm, for exceptional detail
  • K-702 midrange is mated to the K-704 Tractrix® horn for a wide coverage pattern
  • K-107-TI titanium diaphragm high-frequency driver with an all-new wide dispersion phase plug
  • All-new high-fidelity network for truer to life sound, best-in-class efficiency, and power handling
  • Features rear port for the most efficient, fastest air transfer, which reduces port noise for punchier low 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
  • Available in a high-quality Black Ash, Natural Cherry, Distressed Oak, or American Walnut wood veneer finish
  • Designed & assembled in the USA
  • Sold as pair

Technical Data

Frequency Response:  48Hz - 20kHz +/-4dB
Sensitivity:   99dB at 2.83V / 1m
Power Handling: 100W/400W
Maximum SPL: 116dB (Continuous)
Crossover Frequency: HF:4500Hz
MF: 850Hz
High Frequency Driver: K-107-TI 1" (2.54cm) Titanium Diaphragm
Compression Driver
Midrange: K-702 1.75" (4.45cm) Polyimide Diaphragm
Compression Driver
Low Frequency Driver: K-28-E 12" (30.48cm) Fiber-Composite
Cone Woofer
Enclosure Material: MDF
Inputs: Dual Binding Post / Bi-Wire / Bi-Amp
Height: 24.81" (63.5cm)
Width: 15.5" (39.37cm)
Depth: 13.25" (33.6cm)
Weight: 45lbs (20.41kg)
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