Klipsch Heritage
Have a trade-in item? Click here.
Specs
| Design | Three way, horn loaded floorstanding loudspeaker |
| Tweeter | 1 inch titanium diaphragm compression driver, Tractrix horn |
| Midrange | 1.75 inch titanium diaphragm compression driver, Tractrix horn |
| Woofer | 12 inch fiber composite cone |
| Sensitivity | 99 dB at 2.83V / 1m |
| Nominal Impedance | 8 ohms |
| Frequency Response | 48Hz to 20kHz +/- 3dB |
| Recommended Amplifier Power | Suited to low wattage tube and solid state amplifiers thanks to high sensitivity |
| Crossover Frequencies | 850Hz and 4500Hz |
| Enclosure | Bass reflex via rear firing Tractrix port, plywood cabinet |
| Finishes | Real wood veneer Heritage finishes |
| Dimensions (W x H x D) | 15.5 x 24.8 x 13.25 in (394 x 630 x 337 mm), with riser |
| Weight | 45 lbs (20.41 kg) each |
Warranty
Sold as an authorized Klipsch dealer by All Elite Audio. New Klipsch Heresy IV units include the full Klipsch manufacturer warranty of 10 years parts and labor for the original owner. Contact us with any setup or service questions.
What's in the Box
- One pair of Klipsch Heresy IV loudspeakers
- Angled riser bases
- Documentation and warranty information
Overview
The Klipsch Heresy IV is a compact, hand built floorstanding loudspeaker from the legendary Klipsch Heritage line, produced in Hope, Arkansas. Originally conceived by Paul W. Klipsch as a center channel companion to the Klipschorn, the Heresy has evolved into a full range design in its own right. The fourth generation is a three way, horn loaded system that combines a direct radiating woofer with midrange and tweeter compression drivers loaded by Tractrix horns, delivering the immediate, dynamic, and highly efficient sound the brand is known for.
Engineering highlights include a new rear firing bass reflex Tractrix port that extends low frequency response compared to the sealed cabinets of earlier generations, along with an updated crossover network. The very high sensitivity means the Heresy IV produces satisfying volume with only modest amplifier power, making it an ideal partner for low wattage tube amplifiers as well as capable solid state electronics. The plywood cabinet is crafted with real wood veneers and rests on an angled riser that tilts the array toward the listener.
The Heresy IV is for the listener who values lively dynamics, vocal presence, and the effortless, unforced quality of horn loading in a footprint that suits real rooms. It rewards clean, quality amplification and reveals the character of the source, making it equally at home with vinyl, digital streaming, or a classic tube setup.
Key Features
- Hand built in Hope, Arkansas as part of the Klipsch Heritage line
- Three way, horn loaded design with Tractrix horn loaded midrange and tweeter
- 1 inch titanium diaphragm compression tweeter on a Tractrix horn
- 1.75 inch titanium diaphragm compression midrange driver on a Tractrix horn
- 12 inch fiber composite cone woofer for deep, dynamic bass
- New rear firing Tractrix bass reflex port for extended low frequency response
- Very high sensitivity so it pairs beautifully with low wattage tube amplifiers
- Real wood veneer plywood cabinet with an included angled riser base
- Available in classic Heritage finishes
How the Heresy IV Compares
Klipsch Heresy IV vs Klipsch Forte IV
The Forte IV sits one step up in the Klipsch Heritage range and adds a rear mounted passive radiator plus a larger cabinet for deeper, fuller bass and greater scale. The Heresy IV is more compact and easier to place in modest rooms while retaining the same lively horn loaded character. Choose the Forte IV when you want more low end weight and room filling output, and the Heresy IV when space and a tighter, more nimble presentation are priorities. See the Klipsch Forte IV.
Klipsch Heresy IV vs Klipsch RF-7 III
The RF-7 III is a taller, larger Reference series tower with dual woofers and a big, cinematic dynamic range that suits home theater and large rooms. The Heresy IV, from the hand built Heritage line, offers a more intimate, vintage voiced compact form with real wood veneer craftsmanship. Pick the RF-7 III for scale and movies, and the Heresy IV for classic Heritage character in a smaller footprint. See the Klipsch RF-7 III.
Klipsch Heresy IV vs KLH Model Five
The KLH Model Five is a three way acoustic suspension floorstander that leans toward a warm, smooth traditional tonality. The Heresy IV takes a horn loaded approach with much higher sensitivity, delivering immediate dynamics and an effortless feel with lower power amplifiers. Both offer a vintage inspired aesthetic, so the choice comes down to whether you prefer the horn immediacy of the Heresy IV or the relaxed voicing of the Model Five. See the KLH Model Five.
Recommended Amplification and Source
The Heresy IV is highly efficient, so it thrives with modest power and shines with tube or refined solid state amplification. Here is a range of catalog components to build a complete system.
- Advance Paris A10 Integrated Amplifier The A10 offers refined solid state power with plenty of headroom, letting the efficient Heresy IV play cleanly and dynamically at any level. A great choice for listeners who want a clear, controlled foundation.
- Audiolab 7000A Integrated Amplifier The 7000A combines a capable amplifier with onboard DAC and streaming features, making it a tidy one box system heart for the Heresy IV. Its neutral character lets the horns reveal source detail.
- TEAC TN-5BB Turntable The Heresy IV loves vinyl, and the TN-5BB is a solid belt drive deck that pairs naturally with an amplifier's phono stage. Its immediacy suits the speaker's dynamic, forward presentation.
- EverSolo DMP-A8 Gen 2 Streamer/DAC For digital listeners, the DMP-A8 Gen 2 delivers high resolution streaming and DAC quality that feeds a clean signal into your amplifier. It rounds out a modern system alongside the Heresy IV.
Frequently Asked Questions
Is the Klipsch Heresy IV a floorstanding speaker?
Yes. The Heresy IV is a compact floorstanding loudspeaker that sits on an included angled riser base, which tilts the horn array toward the listener for proper alignment.
How many drivers does the Heresy IV have?
It is a three way design with a 12 inch fiber composite cone woofer, a 1.75 inch titanium compression midrange on a Tractrix horn, and a 1 inch titanium compression tweeter on a Tractrix horn.
What does horn loaded mean?
Horn loading uses a flared waveguide, in this case a Tractrix profile, to couple the driver to the air more efficiently. This improves dynamics, directivity, and sensitivity, giving the speaker its immediate and effortless character.
Why is the Heresy IV so sensitive?
The horn loaded midrange and tweeter, along with an efficient woofer, give the Heresy IV a very high sensitivity of around 99 dB. This means it produces satisfying volume with relatively little amplifier power.
Does the Heresy IV work with tube amplifiers?
Yes. Its high sensitivity makes it a natural partner for low wattage tube amplifiers, which can drive it to full, dynamic levels with ease while contributing their own tonal character.
How much amplifier power do I need?
Because of its high efficiency, the Heresy IV plays loud with modest power. Both low wattage tube amplifiers and moderate solid state amplifiers pair well with it.
What is different about the Heresy IV compared to earlier versions?
The fourth generation adds a rear firing Tractrix bass reflex port for extended low frequency response, an updated crossover, and refined drivers, moving away from the sealed cabinet of earlier models.
Where is the Heresy IV made?
It is hand built in Hope, Arkansas, as part of the Klipsch Heritage line, using plywood cabinets with real wood veneers.
What is the frequency response of the Heresy IV?
The published response is approximately 48Hz to 20kHz plus or minus 3dB, with useful output extending below that thanks to the new bass reflex port.
Do I need a subwoofer with the Heresy IV?
Many listeners find the Heresy IV satisfying on its own, especially in small to medium rooms. If you want deeper low end extension for movies or bass heavy music, a subwoofer can complement it.
What finishes are available?
The Heresy IV is offered in real wood veneer Heritage finishes. Availability can vary, so contact us to confirm current stock.
How should I place the Heresy IV in my room?
The included riser tilts the speaker upward toward the listening position. Placement near the front wall works well, and toe in toward the listener helps focus the horn output.
Does the Heresy IV have built in amplification?
No. The Heresy IV is a passive loudspeaker and requires an external amplifier or integrated amplifier to make sound. The powered models in the Klipsch line, such as The Fives, are a separate category.
What crossover frequencies does the Heresy IV use?
The three way crossover splits at approximately 850Hz between the woofer and midrange and 4500Hz between the midrange and tweeter.
What is the nominal impedance of the Heresy IV?
It is rated at 8 ohms nominal, which makes it easy to drive for a wide range of amplifiers, including tube designs.
Can I use the Heresy IV for home theater?
Yes. Its dynamic, efficient character suits both music and home theater. For a matched system you can pair it with other Klipsch models in your setup.
How much does the Heresy IV weigh?
Each speaker weighs 45 lbs, roughly 20.41 kg, and stands about 24.8 inches tall with the riser.
Is the Heresy IV a good match for vinyl?
Absolutely. Its immediacy and dynamics suit vinyl playback well. Pair it with a turntable and an amplifier that has a phono stage for a complete analog system.
What warranty comes with the Heresy IV?
Klipsch provides a 10 year parts and labor warranty for the original owner when purchased from an authorized dealer.
Why buy from All Elite Audio?
All Elite Audio is an authorized Klipsch dealer in Maryland, so your Heresy IV comes with a full factory warranty and genuine support. We offer expert system matching, careful handling, and honest guidance to help you build the right setup around your speakers.
