*Priced as a pair
The Klipsch Heresy IV is the smallest speaker in the Heritage family—and the loudest personality in the room. Hand-built in Hope, Arkansas, this compact horn-loaded legend delivers lightning-fast dynamics, startling clarity, and that unmistakable live music energy Klipsch is famous for. It’s wildly efficient, which makes it a tube-lover’s dream: even a few glowing watts will have it singing with body, bite, and immediacy. The Heresy IV may not dig as deep as its bigger siblings, but what it gives you instead is speed, presence, and pure fun—vocals jump out of the mix, drums snap, and everything feels alive and in the room. Classic looks, modern voicing, and zero apologies—the Heresy IV is proof that big sound doesn’t need a big box.
- Condition
- NEW
- Factory Specs
FREQUENCY RESPONSE (+/- 4 dB) 48-20k +/-4dB
SENSITIVITY1 99dB @ 2.83V / 1m
POWER HANDLING (CONT/PEAK) 100W/400W
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
HEIGHT 24.81” (63.01cm)
WIDTH 15.5” (39.37cm)
DEPTH 13.25” (33.66cm)
WEIGHT 45lbs (20.41kg)
- The History of Klipsch
- Klipsch Audio Technologies (also referred to as Klipsch Speakers or Klipsch Group, Inc.) is an American loudspeaker company based in Indianapolis, Indiana. Founded in Hope, Arkansas, in 1946 as ‘Klipsch and Associates’ by Paul W. Klipsch, the company produces loudspeaker drivers and enclosures, as well as complete...
[ Read More ]
- Liner Notes
The Heresy was originally introduced in 1957 with a compact three-way design utilizing a 12” woofer and horn-loaded midrange and tweeter. In 2006, the Heresy III was upgraded with a more powerful woofer and a bi-wire network as well as midrange and tweeter compression drivers, and features a titanium diaphragm for smooth and accurate definition.
The Heresy IV incorporates an all new K-702 midrange compression driver, featuring a polyimide diaphragm for exceptional detail and dynamics. The K-702 midrange is mated to the K-704 Tractrix® horn, providing you with a wide coverage pattern and smooth response throughout the listening area. The K-107-TI titanium diaphragm high frequency driver features an all new wide dispersion phase plug, providing exceptionally even high frequency dispersion throughout the listening area, making for a wider, more accurate sweet spot.
For the first time in its long legacy, the Heresy now features a rear port – improving low frequency extension by almost 10Hz, for room filling bass. Utilizing Tractrix geometry, the all new Heresy IV ports allow for the most efficient, fastest air transfer in their class, which reduces port noise for punchier low 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.
- Stock No.
- 9252421566685
*Priced as a pair
The Klipsch Heresy IV is the smallest speaker in the Heritage family—and the loudest personality in the room. Hand-built in Hope, Arkansas, this compact horn-loaded legend delivers lightning-fast dynamics, startling clarity, and that unmistakable live music energy Klipsch is famous for. It’s wildly efficient, which makes it a tube-lover’s dream: even a few glowing watts will have it singing with body, bite, and immediacy. The Heresy IV may not dig as deep as its bigger siblings, but what it gives you instead is speed, presence, and pure fun—vocals jump out of the mix, drums snap, and everything feels alive and in the room. Classic looks, modern voicing, and zero apologies—the Heresy IV is proof that big sound doesn’t need a big box.
Condition
NEW
Factory Specs
FREQUENCY RESPONSE (+/- 4 dB) 48-20k +/-4dB
SENSITIVITY1 99dB @ 2.83V / 1m
POWER HANDLING (CONT/PEAK) 100W/400W
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
HEIGHT 24.81” (63.01cm)
WIDTH 15.5” (39.37cm)
DEPTH 13.25” (33.66cm)
WEIGHT 45lbs (20.41kg)
The History of Klipsch
Klipsch Audio Technologies (also referred to as Klipsch Speakers or Klipsch Group, Inc.) is an American loudspeaker company based in Indianapolis, Indiana. Founded in Hope, Arkansas, in 1946 as ‘Klipsch and Associates’ by Paul W. Klipsch, the company produces loudspeaker drivers and enclosures, as well as complete...
[ Read More ]
Liner Notes
The Heresy was originally introduced in 1957 with a compact three-way design utilizing a 12” woofer and horn-loaded midrange and tweeter. In 2006, the Heresy III was upgraded with a more powerful woofer and a bi-wire network as well as midrange and tweeter compression drivers, and features a titanium diaphragm for smooth and accurate definition.
The Heresy IV incorporates an all new K-702 midrange compression driver, featuring a polyimide diaphragm for exceptional detail and dynamics. The K-702 midrange is mated to the K-704 Tractrix® horn, providing you with a wide coverage pattern and smooth response throughout the listening area. The K-107-TI titanium diaphragm high frequency driver features an all new wide dispersion phase plug, providing exceptionally even high frequency dispersion throughout the listening area, making for a wider, more accurate sweet spot.
For the first time in its long legacy, the Heresy now features a rear port – improving low frequency extension by almost 10Hz, for room filling bass. Utilizing Tractrix geometry, the all new Heresy IV ports allow for the most efficient, fastest air transfer in their class, which reduces port noise for punchier low 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.
Stock No.
9252421566685
