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Klipsch Heresy IV

Floor-standing speaker (Oak)

Item # 714HRSY4OA

First introduced in 1957, the Heresy has always had its own sound, and that's still true for the updated Heresy IV.

First introduced in 1957, the Heresy has always had its own sound, and that's still true for the updated Heresy IV.

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About the Klipsch Heresy IV

Vintage looks and clean, dynamic sound

When Klipsch introduced the original Heresy in 1957, there wasn't another speaker like it. And that's still true for their latest-generation Heresy IV.

Vintage looks and clean, dynamic sound

Klipsch Heresys in a basic system

When Klipsch introduced the original Heresy in 1957, there wasn't another speaker like it. And that's still true for their latest-generation Heresy IV.

Over the years, Heresy's clear, low-distortion sound has been a hit with our customers. 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 wider sweet spot.

Also, for the first time, the Heresy now features a rear port, improving low-frequency extension by about 10Hz, for more authoritative sound.

Heresy's high-efficiency design — 99 dB sensitivity — makes it an excellent choice for use with low- and medium-powered tube amps. 

Made in the USA

One thing that hasn't changed is the quality. Klipsch still makes the Heresy one at a time by hand in Hope, Arkansas. Available in a range of gorgeous finishes, it includes an angled riser base for floor placement that can be removed for custom installations.

Note: Though this speaker is packaged and priced individually, it is actually only sold in pairs. You'll want to adjust your cart to "quantity two" during checkout when you make your purchase.

Got wire?

Most speakers don't include any. Read our article about choosing and installing speaker wire.
Shop our selection of speaker wire.

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Product highlights:

  • handmade in Hope, Arkansas
  • 3-way, 3-driver design
  • tweeter: 1" titanium-diaphragm compression driver with Tractrix® horn and wide-dispersion phase plug
  • midrange: 1-3/4" polyimide-diaphragm compression driver with Tractrix® horn
  • woofer: 12" fiber-composite cone
  • bass-reflex enclosure with rear-firing Tractrix port
  • frequency response: 48-20,000 Hz (±4dB)
  • sensitivity: 99 dB
  • nominal impedance: 8 ohms compatible
  • power handling: 100 watts max. continuous (400W peak)
  • book-matched real wood veneer finish
    • veneer leaves for the left and right speakers are crafted from the same piece of timber
    • they're precisely arranged to provide an aesthetically pleasing "mirror" image at the splice
    • each speaker is sold and packaged individually, but must be purchased in pairs
  • removable cloth grille
  • dual sets of speaker binding posts allow bi-amping or bi-wiring
  • 15-1/2"W x 24-13/16"H x 13-1/4"D
  • weight: 45 lbs.
  • warranty: 5 years
  • Our 60-day money-back guarantee
  • MFR # 1068358

What's in the box:

  • Floor-standing loudspeaker
  • Detachable grille (installed)
  • Base riser (installed)
  • 4 Self-adhesive rubber feet
  • 2 Jumper-straps (installed)
  • Owner's Manual
  • "Congratulations" letter
  • Klipsch brochure

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More details on the Klipsch Heresy IV

Stacey B.

Features & specs

General
Enclosure Bass Reflex
Finish MDF/Wood veneer
Color Oak
Tweeter Tractrix Horn
Tweeter Size (inches) 1
Midrange Size (inches) 1.75
Woofer Size (inches) 12
Woofer Composition Fiber-composite
Woofer Surround Treated cloth
Built-in Powered Sub No
Dolby Atmos Drivers No
Video-Shielded No
Connector Type 5-way post
Bi-amp Inputs Yes
Parts Warranty 5 Years
Labor Warranty 5 Years
Specifications
Power Range 100
Frequency Response 48-20k Hz
Sensitivity 99 dB
Impedance (Ohms) 8
Subwoofer Amp Power ---
Height (inches) 24-13/16
Width (inches) 15-1/2
Depth (inches) 13-1/4
Weight 45 lbs

Product Research

Features

Heresy IV: First introduced in 1957, the Heresy started life as a compact center channel speaker for the Klipschorn in three-speaker stereo arrays. The Heresy is a compact, three-way design that uses horn-loaded compression drivers for midrange and treble reproduction and a direct radiating 12"woofer for the low frequencies.

3-Way Design: The Klipsch Heresy IV loudspeaker features a three-way design that uses horn-loaded compression drivers for midrange and treble reproduction, plus a direct radiating 12" woofer for the low frequencies.

  • 1" Tractrix Horn Loaded Tweeter: The 1" titanium diaphragm compression driver (K-107-TI) is coupled to a Tractrix Horn for smoother high-end response with greater extension, enhanced imaging, and more powerful dynamics.
  • 1.75" Tractrix Horn Loaded Midrange: The 1.75" polyimidediaphragm compression driver (K-702) is coupled with a horn for detailed, accurate midrange sound.
  • 12" Fiber-Composite Cone Woofer: The 12" fiber-composite cone woofer (K-28-E) delivers powerful low frequencies. The 12" woofer also employs a treated cloth surround for added efficiency and flexibility.

Crossover Network: For signal purity and perfect driver integration, the crossover (HF: 4500Hz/MF: 850Hz) on the Heresy IV features the finest components and Klipsch custom internal wiring.

Rear Tractrix Port: The rear Tractrix port of the Heresy IV floorstanding loudspeaker is perfectly matched to the cabinet and woofer, creating ideal airflow with minimal distortion and turbulence even at the lowest 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.

Dual Binding Post Speaker Terminals: The Klipsch Heresy IV loudspeaker has two sets of binding posts connected by jumpers. Using the dual binding posts, you can bi-amp or bi-wire the speakers. The binding post terminals will accept banana plugs (single/dual), pin-connectors, spade-connectors, and bare wire.

  • Bi-Wiring: Bi-wiring can provide noticeable improvements in the overall transparency of your loudspeakers. Run separate speaker wires to the low & high frequency drivers from a single amplifier (the upper set of binding posts are for the high frequency drivers; the lower set of binding posts are for the low frequency drivers).
  • Bi-Amping: Bi-amping allows you to use separate amplifiers for the high & low frequency sections of your loudspeaker for greater dynamic range & lower distortion. We recommend that your separate amplifiers have identical gain to preserve the speaker's voicing balance.

Note: If you decide to bi-wire or bi-amp, you must remove the jumpers between the terminal posts (failure to do this could result in damage to your amplifier and loudspeakers).

Placement: The Klipsch Heresy IV loudspeaker will perform well in a variety of locations. Corner, floor placement will deliver the highest degree of low bass reinforcement and the pre-installed slant riser base helps to compensate for the Heresy's short stature. This riser may be removed for shelf or cabinet placement. Self-stick rubber pads are supplied for attachment to the bottom of the cabinet to prevent scratching of shelves and hard surfaces. Best results will be achieved using the following general guidelines.

  • Place on a common wall 6' to 15' apart and position them equidistant from the wall behind the speakers.
  • Angle speakers toward the listener and even with or forward of any adjacent obstructions.
  • Placing them near a corner or wall provides the greatest amount of bass while moving the speakers away from room boundaries reduces bass.
  • Asymmetrical placement of a pair of speakers from adjacent side walls can smooth room-induced bass unevenness.
Note: Experiment with the above guidelines to suit your taste and to compensate for your room's acoustic characteristics.

Heritage Series (Made in the USA): The Klipsch Heritage Series is built and handmade in the USA at Klipsch's manufacturing facility in Hope Arkansas. They are meticulously handcrafted and assembled using the finest quality materials, even down to the highest-grade adhesives and fasteners (no detail goes unnoticed). Each Heritage Series loudspeaker utilizes Klipsch proprietary horn-loaded technology to bring a live music listening experience into the home. All Heritage Series loudspeakers are available in a variety high-quality wood veneers. Klipsch Heritage loudspeakers are built to rock the house and stand the test of time.  This is a speaker that will be handed down for generations to come,

4 Principles of Klipsch Sound: Paul W. Klipsch believed four principles to be the foundation for great sound. They continue to drive the design of every new Klipsch speaker, today and tomorrow.

  • High Efficiency & Low Distortion: Klipsch horn technology is highly efficient, providing more accurate sound with less power and less distortion - resulting in louder, cleaner audio. Klipsch's Law: Efficiency is inversely proportional to distortion.
  • Controlled Directivity: Klipsch horn technology accurately directs sound to the proper locations, which, in turn, creates a more lifelike soundstage without wasting acoustic energy where sound is not needed or desired.
  • Wide Dynamic Range: The softest sounds are reproduced with remarkable clarity and the loudest sounds are delivered without harshness or distortion - with the greatest possible range between the softest and loudest sounds.
  • Flat Frequency Response: Audio is delivered without frequency bias - no unnatural highs, mids or lows - reproducing recorded sound as accurately as possible without colorization.

 

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Customer Q&A

1 question already asked

Q
Could you buy a base lift by themselves?
[ Michael  Dec 22, 2019 ]
1 answer
A
Hi Michael, thank you for your question. Unfortunately we do not carry the riser bases separately. You should be able to obtain those from Klispch. You may reach out to them at 800-554-7724. Hope this helps!
[ Jess  Jan 05, 2020 ]  Staff

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