About The Klipsch Heritage Heresy IV Speakers
The Klipsch Heritage Heresy IV speaker is a testament to the quality that Klipsch demands from each and every one of its audio products. And, because of its relatively 'compact' size, the Klipsch Heresy IV 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 sound that Klipsch fans around the world know and love.
The name "Heresy" pretty much sums up Klipsch's whole approach to their business: they are not a company to play it safe or play by the rules. These speakers have a sound all their own that customers seem to love. Over the years, Heresy's clear, low-distortion sound has been a hit, with the previous-version Heresy III earned dozens of glowing reviews from listeners with a broad range of musical tastes.
For the Heresy IV, Klipsch once again tweaked this classic design, going with a new polyimide-diaphragm midrange driver. And the tweeter gets an all-new wide-dispersion phase plug, which creates a larger listening "sweet spot." For the first time, the Heresy now features a rear port, which improves low-frequency extension by about 10Hz for more authoritative sound. And Heresy's high-efficiency design — 99 dB sensitivity — makes it an excellent choice for use with low- and medium-powered tube amps.
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.
Crossover Network: The Heresy IV has been completely revoiced from its predecessor, utilizing premium componentry in an all new high-fidelity crossover network — minimizing electrical degradation throughout the circuitry — for truer to life sound with best in class efficiency and power handling. The new crossover 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 & 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 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.
Book-Matched Wood Veneer: Klipsch only uses book-matched wood veneers for the Heritage series. The veneer leaves are kept in order as they are delicately sliced from the timber and precisely arranged to provide a mirror image at the splice joint — like turning the pages of a book. This gives each speaker an aesthetically appealing and consistent appearance that is treasured more than any other cut of wood veneer.
Built To Last: While each and every component of the Heresy IV is built to last. Klipsch has always recognized the unique and critical role of a loudspeaker's cabinet in the sound reproduction process. From the craftsmen in Hope, Arkansas to the engineers in Indianapolis, Indiana, Klipsch has 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.
Our Take On Klipsch Heritage Heresy IV Speakers
The Klipsch Heresy IV still looks like a speaker designed in 1957. However its sound has been thoroughly modernised so even though it looks like a speaker from 'Pleasantville' it sounds more like a speaker from 'The Avengers' - the 2012 movie and not the 1960's TV show! The noteworthy thing with Heresy IV is the sensitivity which is a staggering 99db! In simple language, you don't need a behemoth amplifier to get things really shaking so 25 Watts is all you need but with more you'll enjoy effortless performance. Need to know more on how this works? Please contact us.
So one thing is absolutely certain, these speakers are built to rock like very few others. So, if you want to rock your world a little, or a lot, indulge in a set of Klipsch Heresy IV's and you won't be disappointed.
Main Features & Specifications
- Design: Three-Way Horn Loaded Floorstanding Loudspeaker
- Handmade in Hope, Arkansas, USA
- Tweeter: 1 x 25mm (1") Titanium-diaphragm compression driver with Tractrix horn and wide-dispersion phase plug
- Midrange: 1 x 45mm (1-3/4") Polyimide-diaphragm compression driver with Tractrix horn
- Woofer: 1 x 305mm (12") Fibre-composite cone
- Enclosure: Bass-reflex enclosure with rear-firing Tractrix port
- Frequency Response: 48-20,000 Hz (±3dB)
- Power Handling: 100 Watts RMS (400 Watts peak) - Must be 'clean' undistorted power.
- Nominal Impedance: 8 Ohms
- Sensitivity: 99 dB
- Maximum Acoustic Output: 116dB SPL - This is not a misprint!
- Book-Matched Real Wood Veneer Finish
- Veneer leaves for the left and right speakers are crafted from the same piece of timber
- Precisely arranged to provide an aesthetically pleasing "mirror" image at the splice
- Available Colours: Black Ash; Distressed Oak or American Walnut
- Grille Covers: Removable cloth grille
- Speaker Wire Terminals: Dual sets of speaker binding posts allow bi-amping or bi-wiring
- Dimensions (WxHxD): 394 x 630 x 337mm
- Nett Weight: 20.4kg each
- Manufacturer's Warranty: 10 Years - Does not include misuse or abuse
Note: Features & Specifications Subject To Change Without Notice. E&OE