Klipsch Heresy IV Floorstanding Speakers - Red Oak Pair

Klipsch Heresy IV Floorstanding Speakers - Red Oak Pair

Experience audio heritage like never before with the Klipsch Heresy IV Floorstanding Speaker. Born in 1957 as a revolutionary center channel speaker, the Heresy series continues to push sonic boundaries with its latest evolution. The Heresy IV delivers high-efficiency, dynamic range, and powerful bass in a compact three-way design, enhanced with a rear Tractrix port for deeper, cleaner low frequencies. Whether you're spinning vinyl, watching films, or streaming music, the Heresy IV's handcrafted American build and acoustic precision make it a soul-stirring centerpiece for any audio setup. The Klipsch Heresy IV is part of the Heritage Series.

A Little Heresy Goes a Long Way: Experience the champion of speakers, ideal for everything from vinyl enthusiasts to home theater aficionados. The Heresy IV delivers a soul-stirring audio experience that will leave you in awe.

Designed to Rock, Built to Last: Handcrafted with pride in Hope, Arkansas, for over 50 years, the Klipsch Heresy IV embodies superior craftsmanship and durability. With a legacy rooted in excellence, the Heresy IV is built to withstand the test of time.

What It’s Good At:

• Explosive dynamics with low power thanks to 99 dB sensitivity for effortless, live-sounding playback.
• Vocal clarity and realism from the K-702 polyimide midrange compression driver and Tractrix® horn.
• Crisp, airy highs with wide dispersion via the K-107-TI titanium tweeter and phase plug.
• Punchier, deeper bass with reduced turbulence using the rear Tractrix® port geometry.
• Flexible system building with dual binding posts for bi-wire/bi-amp setups.
• Heritage-grade craftsmanship with premium veneers, designed/assembled in the USA, plus a 10-year warranty.

Klipsch Heresy IV Specifications:

• Frequency Response: 48-20k +/-4dB
• Sensitivity: 99dB @ 2.83V / 1m
• Power Handling: 100W/400W (Continuous/Peak)
• Maximum SPL: 116dB Continuous
• Nominal Impedance: 8 ohms Compatible
• 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 posts / bi-wire / bi-amp
• Dimensions: Height: 24.81” (63.01cm), Width: 15.5” (39.37cm), Depth: 13.25” (33.66cm)
• Weight: 45lbs (20.41kg)

Klipsch Heresy IV Q&A:

Q: What type of speaker is the Klipsch Heresy IV?

A: The Heresy IV is a three-way floorstanding speaker with a compact design, ideal for both stereo and home theater use.

Q: Does the Heresy IV have a rear port?

A: Yes, it’s the first Heresy model to include a rear Tractrix port, enhancing bass response and minimizing turbulence for cleaner low frequencies.

Q: Is it good for vinyl or home theater setups?

A: Absolutely! Its high efficiency and detailed sound make it perfect for vinyl lovers, while its wide dynamic range suits immersive home theater environments.

Q: What finishes are available?

A: You can choose from Black Ash,  American Walnut, and the new 2025 American Auburn real wood veneers, each handcrafted in the USA.

Q: Where is it manufactured?

A: The Heresy IV is proudly designed and assembled in Hope, Arkansas, USA.

Q: What drivers are included in the speaker?

A: It features a 12” woofer, 1.75” midrange compression driver, and 1” titanium high-frequency compression driver.

Q: Can I bi-wire or bi-amp the speaker?

A: Yes, it includes dual binding posts for bi-wiring or bi-amping flexibility.

Q: How big is the speaker?

A: It measures 24.81” H x 15.5” W x 13.25” D and weighs 45 lbs, offering powerful performance in a compact footprint.

Klipsch Heresy IV Downloads:

Klipsch Heresy IV Product Manual
Klipsch Heresy IV Specification Sheet