Klipsch Heresy IV – Compact Heritage Horn-Loaded Floor-Standing Speaker
The Klipsch Heresy IV revives a vintage classic in a more compact package, delivering bold, dynamic sound through horn-loaded drivers and a powerful 12″ woofer. With modern acoustic updates and timeless American craftsmanship, it’s ideal for both music lovers and home cinema systems that demand real presence with heritage style.
Key Features
- Horn-loaded compression drivers: A polyimide-diaphragm K-702 midrange on a Tractrix horn and a titanium-diaphragm K-107-TI tweeter with a wide-dispersion phase plug ensure precise, spacious imaging.
- Revoiced crossover network: Premium components and AudioQuest wiring minimise signal loss and support high efficiency and detail.
- New Tractrix rear port: This first-in-series rear port enhances bass extension by nearly 10 Hz, with flared design reducing port noise for tighter, punchier lows.
- Heritage build quality: USA-assembled cabinet with book-matched wood veneer, bi-wire/bi-amp capable binding posts, and a slanted riser base that’s removable for shelf placement.
Customer Benefits
Klipsch Heresy IV fills rooms with lively, airy sound—its efficient design means it plays loud and detailed even with modest amplification. Its vintage aesthetic and solid craftsmanship make it both a sonic centerpiece and a visual statement.
Quick Specs
- Sensitivity: 99 dB (2.83 V/1 m)
- Power Handling: 100 W continuous / 400 W peak
- Frequency Response: 48 Hz – 20 kHz (±4 dB)
- Impedance: 8 Ω nominal
- Crossover Frequencies: Mid: 850 Hz, Tweeter: 4 500 Hz
- Drivers: 12″ woofer; 4.45 cm midrange; 2.54 cm tweeter
- Enclosure: MDF with real wood veneer
- Inputs: Dual binding posts (bi-wire/bi-amp ready)
- Dimensions (W × H × D): 39.4 × 63.0 × 33.7 cm
- Weight: Approx. 20.4 kg
What’s in the Box
- Pair of Klipsch Heresy IV speakers
- Slanted riser base (removable)
- Removable speaker grilles
- User guide
Use Cases / Ideal For
Perfect as the main stereo speakers for mid-sized listening rooms or as front channels in compact home theaters. Ideal for vinyl enthusiasts, audiophiles, and anyone who appreciates effortless dynamic range with a nod to classic design.
Compatibility
High sensitivity pairs well with tube or low-power amps, while bi-wire/bi-amp options open flexibility. Works beautifully with both analog and modern digital sources, and fits into vintage and contemporary setups alike.
Pros & Cons
✅ Pros:
- Remarkably efficient—delivers huge sound with modest amplification
- Wide, accurate soundstage and articulate bass response
- Timeless design with premium build and finish
⚠️ Cons:
- Large and heavy—needs spacious placement and strong support
- High sensitivity can reveal amplifier hiss or poor recordings
- Horn coloration may need gentle EQ tuning in certain rooms
The Klipsch Heresy IV blends heritage sound, modern acoustic design, and American craftsmanship—perfect for listeners who want character, clarity, and power without compromise.
