Klipsch Heritage Heresy IV Floorstanding Speaker - Each

The Entry Point Into Klipsch's Heritage Line

The Klipsch Heritage Heresy IV is a 3-way, horn-loaded floorstanding speaker — the smallest and most affordable tower in Klipsch's decades-old Heritage line, built on an integrated, tilted riser base rather than a tall cabinet.

Klipsch rates sensitivity at 99 dB into a nominal 8 ohms, though an independent lab measurement from Newport Test Labs found 93 dB in practice — still exceptionally efficient by any modern standard, and easily driven by even a low-power tube amplifier without strain.

The cabinet is available in Black Ash, Auburn, or American Walnut, and sold each, so a stereo pair is two — order one to match an existing speaker, or a matching pair to start a system from scratch.

Where the Horn-Loaded Design Earns Its Keep

Three Horn-Loaded Drivers on a Compact Riser Base

A K-107-TI 1-inch titanium compression tweeter crosses over at 4,500 Hz to a K-702 1.75-inch polyimide compression driver on a K-704 Tractrix horn, crossing over again at 850 Hz to a 12-inch fiber-composite woofer.

The whole cabinet stands on an integrated, slightly tilted riser base with rubber feet for hard floors — a design choice, not a bookshelf speaker missing its stand, that keeps the horns aimed at ear height in most rooms.

The Numbers, and What They Ask of Your Amplifier

Klipsch quotes a frequency range of 48 Hz to 20 kHz within 4 dB. Klipsch rates sensitivity at 99 dB, though Newport Test Labs independently measured 93 dB — either figure is exceptionally efficient next to a typical dynamic tower.

Klipsch rates power handling at 100 watts continuous, 400 watts peak, with a maximum SPL of 116 dB. Dual binding posts support bi-wiring and bi-amping, and the riser base's rubber feet keep the cabinet stable on hard flooring.

What Reviewers Are Saying

What Hi-Fi? called the Heresy IV "a totally different design," writing that "this latest version...sounds better than any of the models that have preceded it," with a midrange where "the Klipsch Heresy IVs sound simply amazing."

Rafael Todes, StereoNET, awarded it a StereoNET Applause Award, writing "this is a big speaker, in pretty much every way" and that "it captures the vibrancy of music as well as its physical heft."

Who Is This Floorstanding Speaker Best For?

• You want a genuine entry point into Klipsch's Heritage horn technology — the same compression-driver science used in the pricier Forte IV and Cornwall IV, at the most accessible price
• Your amplifier is modest, even a low-power tube amp — exceptional horn-loaded sensitivity means it doesn't take much power to play loud and clean
• You want the smallest footprint in Klipsch's Heritage floorstanding line — an integrated riser base keeps the cabinet compact without sacrificing real horn dynamics
• You want one speaker per cabinet, priced and shipped that way — the Heresy IV is sold each, so order two for a stereo pair
• You want real floorstanding bass without a separate subwoofer — the Heresy IV reaches to 48 Hz within 4 dB on its own. For the deepest home-theater effects, add one of our subwoofers and let the towers do what they do best

How Does It Connect to Your System?

Place a pair 6 to 15 feet apart, equidistant from the wall behind them, angled toward the listening position. The rear port means moving the cabinet closer to the wall adds bass, and moving it farther away reduces it.

Dual binding posts accept a single-wire or bi-wire/bi-amp connection. The riser base's rubber feet are made for hard floors.

Two cables, two speakers, and you are listening.

Pairs Well With

What finishes the system around a pair of Heresy IV towers:

• Integrated amplifiers — even a modest integrated amplifier has power to spare at this sensitivity
• Stereo amplifiers — a genuinely low-power tube amplifier is a real option here, not just a marketing claim
• Speaker cables — single-wire or bi-wire runs, since this model supports both
• Speaker isolation feet — an alternative to the riser base's own rubber feet on a wood or tile floor

Frequently Asked Questions

Is the price for one speaker or a pair?

One. The Heresy IV is sold each, so order two for a stereo pair, or one to match an existing speaker.

Is the Heresy IV a floorstanding speaker or a bookshelf speaker?

A genuine floorstander. It ships standing on its own integrated riser base, not as a stand-mount speaker sold without a stand.

What amplifier do I need?

Klipsch rates power handling at 100 watts continuous, 400 watts peak. Its exceptional sensitivity means even a low-power amplifier, including many tube amps, drives it well.

Can I bi-wire the Heresy IV?

Yes. Dual binding posts support bi-wiring and bi-amping.

What's the difference between the Heresy IV and the Forte IV?

The Forte IV steps up to a larger 3-way design with a rear-firing passive radiator for deeper bass extension, in a taller cabinet, at a higher price.

What finishes are available?

Black Ash, Auburn, and American Walnut.

See It in Action

Andrew Robinson reviews the Heresy IV:

SkyFi Audio drives the Heresy IV with just 4 watts:

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Learn More

Want to learn more about speaker placement, bi-wiring, or matching a low-power amplifier to a high-sensitivity speaker? Visit our Learning Center for guides, tips, and expert advice.