Klipsch Heresy IV Heritage Series Speakers - Pre-Owned

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General:

Pre-Owned set of classic current Klipsch Heresy IV, 3-Way 12” Horn-Loaded Loudspeakers.

Looking great with little to no signs of use. 

These are the latest available iteration containing many improvements:

• Ported cabinet resulting in 10Hz more bass
• Magnetic grill eliminating the risk of broken grill posts
• Redesigned crossover utilizing same design as Klipschorn and LaScala.
• Upgraded metal speaker terminals
• Redesigned midrange horn - same as found on the Cornwalls
• New Klipsch 10 Year Warranty
• Designed & assembled in the USA

Finished is a subtle yet striking matte Black Ash finish with a vintage looking "salt and pepper" cloth grill.

At 99db efficiency (!) the Heresy needs little power to be driven to full volume, as little a 10W we've found, but will benefit from up to 100W as the manufacturer recommends. 

Click bellow for full featured SkyFi video review and audition comparing all the Heritage speakers. 

More from Klipsch:
First introduced in 1957, the Heresy® was arguably the first- ever center channel loudspeaker, used with the Klipschorn in three-speaker stereo arrays. Topping many audiophiles’ best rock-n-roll speaker lists because of its incredible output and clarity, the Klipsch Heresy is a compact, three- way design that uses horn-loaded compression drivers for midrange and treble reproduction, and a direct radiating 12-inch woofer for the low frequencies.

A LITTLE HERESY IS GOOD FOR THE SOUL
Because of its size, the Heresy offers the greatest degree of placement flexibility in the Heritage series. First introduced in 1957, this three-way horn-loaded loudspeaker is still able to deliver the awe-inspiring Klipsch sound that our fans around the world know and love.

DESIGNED AND MADE IN THE USA
The Klipsch Heresy IV speaker is a testament to the quality that Klipsch demands from each and every one of its audio products. Remember great sound? We do, too. The Klipsch Heresy enclosure is made in the USA, by proud craftsmen in Hope, Arkansas, just like Paul W. Klipsch (PWK) intended.

STANDOUT FEATURES
COMPACT, THREE-WAY LOUDSPEAKER
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.

DRIVERS
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.

NETWORK
The Heresy IV has been completely revoiced from its predecessor, utilizing premium componentry in an all new high-fidelity network — minimizing electrical degradation throughout the circuitry — for truer to life sound with best in class efficiency and power handling. The new network draws from the classic three-way steep slope design of the legendary Klipschorn, La Scala and Cornwall speakers.

TRACTRIX® PORTS
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.

BI-AMP INPUT PANEL AND BINDING POSTS
The Heresy’s premium, aluminum input panel accommodates large, high-quality speaker cables. Strong, versatile and quality binding posts provide the capability for bi-wiring or bi-amping.

HIGH EFFICIENCY
Nothing in the industry sounds as big or is as efficient as the Heresy, given its relatively compact size. This model offers the greatest degree of placement flexibility of the Heritage series. The bonus slant riser base can be removed for cabinet installations.

MATCHED PAIRS
Every pair of Heritage series loudspeakers is grain-matched, using wood veneer panels that come from the same timber. Each cabinet is carefully matched so that each speaker in the pair is practically indistinguishable from the other. The speakers move seamlessly together through the factory, and each finished product is inspected and labeled with sequential serial numbers, ensuring that your Heritage series speakers leave the factory as a meticulously crafted set.

BOOK-MATCHED WOOD VENEER
Klipsch only uses book-matched wood veneers for the Heritage series. The veneer leaves are kept in order as they are delicately sliced from the timber and precisely arranged to provide a mirror image at the splice joint — like turning the pages of a book. This gives each speaker an aesthetically appealing and consistent appearance that is treasured more than any other cut of wood veneer.

BUILT TO LAST
While each and every component of the Heresy IV is built to last. Klipsch has always recognized the unique and critical role of a loudspeaker’s cabinet in the sound reproduction process. From the craftsmen in Hope, AR to the engineers in Indianapolis, IN, Klipsch has always put an extraordinary emphasis on cabinet design. The Heresy enclosure is assembled using only the highest-grade adhesives and fasteners. The riser base can be removed for cabinet installation or placement on optional stands.

Brand Background:
For over 70 years, Klipsch has designed and engineered its products in-house with the most talented, skilled, and passionate people in the industry - starting with our founder, Paul W. Klipsch. See how this pioneer and maverick created an entirely new way to enjoy music at home.

Ownership:
Single Owner

Amplifier Recommendations:
As little as 10 watts will make these sing

Connections:
5 Way Binding Posts

General Sound:
Big beautiful musical sound with little fatigue.

Cosmetic Condition:
8 - Very Slight Signs of Use. See our detailed rating description here.

Working Condition:
Working perfectly and tested in our lab and listening room.

Included:
Speakers, grills, and boxes

Packing:
Original Manufacturers Packing

Reviews:
Click Here

Original MSRP:
$3198

Specs:
FREQUENCY RESPONSE (+/-4dB)
48-20k +/-4dB

SENSITIVITY
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

Dimensions - EACH:
15-1/2" W x 24-13/16" H x 13-1/4" D

Weight - EACH:
45 lbs.

Recommended Cables:

Kimber Kable - Speaker Cables - Better

Kimber Summit Series Monocle XL Speaker Cables (PAIR) - Best

Kimber Summit Series BiFocal XL Bi-Wire Speaker Cables (PAIR) - Best If Applicable 

The SkyFi Testing Process for Speakers:
Our speaker evaluation process starts with a visual inspection of all drivers. We are looking for damaged or deteriorating woofer surrounds, dented tweeter domes, and cone damage. We also inspect the speaker connection points for loose or broken connectors.

After the initial visual inspection we connect the speakers to a reference amplifier with our preferred test tracks. With the speakers placed with proper distance we listen to each driver to make sure that they are producing the intended frequencies with no signs of distortion or rattle. During listening tests with test tracks we check for proper stereo imaging and bass response at various listening levels. If there are any audible signs of issues, the speakers are taken to the bench where we perform a frequency sweep to isolate the issue so that it can be resolved by component repair or replacement.