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Klipsch® Heritage Walnut Heresy® III Floorstanding Speaker Pair-1007423

Model #: 1007423
At a Glance

Because of its relatively "compact" size, this model offers the greatest degree of placement flexibility in the Heritage Series line. First introduced in 1957, the Heresy, a three-way design, started out as a compact center channel speaker to accompany the Klipschorn® in three-speaker stereo arrays.

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Get to know this product.

  • A three-way design using horn-loaded Titanium diaphragm midrange and high frequency compression drivers.
  • Direct-radiating 12-inch woofer for powerful low frequencies.
  • 99 dB sensitivity delivers Smooth, dynamic and low distortion sound
  • Available in a high-quality Black Ash, Cherry, or Walnut wood veneer finish
  • Designed & Assembled in the USA

A Little Heresy Is Good for The Soul

Introducing the pound-for-pound champion of the world. Whether it's for your burgeoning vinyl collection, home theater or whatever.

Nothing rocks harder. Period.

Designed & Assembled in the USA. Made to Rock.

With cabinetry that is proudly handcrafted in Hope, Arkansas for over 50 years, the Klipsch Heresy III speaker is a testament to the quality Klipsch demands from each of its audio products.

Here's to 50 more years of Heresy.

Today's Heresy

In 1985, we made some changes and improvements to this model and re-released it as the Heresy II. Today, the new Heresy III has a more powerful woofer, a bi-wire network, and a titanium diaphragm tweeter with a larger magnet assembly. The midrange compression driver also features a new titanium diaphragm.

In addition to delivering smooth, dynamic and low distortion sound, the Heresy III is available in a high-quality cherry, walnut or black ash wood veneer finish. Included is a slant riser base for floor placement that can be removed for cabinet installations.

The Great American Speaker Company

Our founder, Paul W. Klipsch, was an engineer, inventor, madman and certified genius. He spent his life trying to bring the world better sound. Since 1946, we have carried on our founder's passion for delivering the best home audio experience possible.

You're not buying just speakers - you're buying a piece of American audio history built on more than 70 years of badass acoustic technology.



Frequency Response (+/- 4 dB)58 Hz - 20 kHz
Sensitivity99 dB @ 2.83V / 1m
Power Handling (Cont/Peak)100W/400W
Maximum SPL116 dB Continuous
Nominal Impedance8 Ohms Compatible
Crossover FrequencyHF: 5000 Hz; MF: 850 Hz
High Frequency DriverK-107-TI 1” (2.54cm) Titanium diaphragm compression driver
MidrangeK-53-TI 1.75” (4.45cm) Titanium diaphragm compression driver
Low Frequency DriverK-28-E 12” (30.48cm) Fiber-composite cone woofer
Enclosure MaterialMDF
InputsDual binding posts / bi-wire / bi-amp
FinishWalnut, Cherry, Black

Misc. Specs

Product Weight44
Impedance8 ohms
Maximum Power Handling (Watts)400
Number of Speakers2
Depth (in.)13.25
Height (in.)23.81
Width (in.)15.5
Woofer Size12"
WarningProposition 65 Warning for California Residents