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Seller's Description

Klipsch Heresy 1 3-way speakers in gorgeous high end oiled walnut finish (HWO). Fantastic pair of the legendary heritage series Heresy I speakers in classic oiled walnut finish. Per the serial codes stamped on the cabinets, these were numbers 9 and 10 of the 1000 units built in 1979. The pair came from a single owner who maintained them in very good condition. The original paper tag is also present, and--while not in great condition--contains the handwritten names of the craftsmen that inspected and tested them. These are original condition showpieces with K-22 woofers, K-55v midrange drivers on K-700 horns and K-77 tweeters with Type E crossovers. We handbuffed these with pure tung oil to eliminate any slight uv fading and restore their original luster. Highly doubtful you'll find another pair in this condition unless you are buying them new. Immaculate, among the first 10 pairs made in 1979, and priced to sell. Specifications FREQUENCY RESPONSE:50Hz-17kHz(+-)5dBSENSITIVITY:96dB @ 1watt/1meterPOWER HANDLING:105 watts maximum continuous (500 watts peak)NOMINAL IMPEDANCE:8 ohmsTWEETER:K-77-M 1" (2.54cm) Phenolic diaphragm compression driverHIGH FREQUENCY HORN:90(o)x40(o) Exponential HornMIDRANGE DRIVER:K-55-V 2" (5.08cm) Phenolic diaphragm compression driverMID FREQUENCY HORN:80(o)x30(o) Exponential HornWOOFER:K-22 12" (30.48cm) Fiber-composite coneCABINET MATERIAL:Birch Plywood ENCLOSURE TYPE:SealedDiMENSIONS:21.4" (54.36cm) x 15.5" (39.37cm) x 13.2" (33.53cm)WEIGHT:55 lbs. (24.97kg)FINISH:Walnut FIRST YEAR BUILT 1957LAST YEAR BUILT:1985 Serial No.: 82T009, 82T010Condition: Operating: 10/10Cosmetic: Very GoodPick up in person strongly encouraged. Will ship flat rate within the contiguous United States for $175.

Our Thoughts RADAR AI

The Klipsch Heresy is a compact, vintage masterpiece renowned for its rich, full-range sound and historic horn-loaded design, making it a beloved icon among hi-fi enthusiasts. The asking price of US$1,795 sits between the 25th percentile (US$935) and 75th percentile (US$2,173) of recent comparable listings, placing it near the median of US$1,381; this is a fair, not ambitious, price for a used unit in new condition. While external data suggests older Heresy I/II models often trade around US$750, the Heresy III and IV variants command higher values, with Heresy IVs ranging from US$1,200 to US$2,400, aligning well with this listing.

This is a worthwhile buy for enthusiasts seeking a rare, high-quality vintage speaker with modern reliability, especially if the listing includes original accessories or is from an original owner. The Heresy excels in delivering warm, detailed audio in small spaces, and its timeless design adds aesthetic value. With no material caveats evident in a clean listing at a fair price, this represents a genuine buying opportunity rather than a risk. Whether it’s a Heresy III or IV, the price reflects current market trends for sought-after Klipsch heritage models.

Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.

About Klipsch

Founded in 1946 in Hope, Arkansas, Klipsch traces its roots to Paul W. Klipsch, a visionary audio engineer and maverick who handcrafted his first speakers in a tin shed behind a dry cleaner. Patented in 1945, the revolutionary Klipschorn corner horn loudspeaker embodied his quest for live-like sound reproduction, drawing from Bell Labs principles to deliver wide frequency range and expansive soundstaging. This American pioneer shook hi-fi foundations, blending acoustic innovation with unyielding craftsmanship, and registered Klipsch & Associates to bring that tin-shed magic to the world.

Klipsch excels in loudspeakers, from flagship horn-loaded models like the enduring Klipschorn to high-fidelity enclosures, drivers, and complete systems for home audio, public address, and even personal computers. While deeply rooted in speakers, the brand has expanded into headphones and music systems, maintaining a focus on efficient, dynamic designs that prioritize clarity and power without excess amplification needs.

Renowned for its heritage-driven efficiency and bold, live-performance sonics, Klipsch holds a commanding mid-to-high-end position in the market, appealing to discerning buyers who value American-made authenticity over mass-market compromise. Neither purely vintage collector bait nor niche boutique, it bridges classic horn technology with modern reliability, earning cult status among audiophiles chasing that bigger, clearer sound Paul Klipsch first chased in 1946.

See all Klipsch listings on RADAR.

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