Klipsch Heresy IV Review: Rated 2.3/5

Last updated: October 27, 2026

The Klipsch Heresy IV is rated 2.3/5 for sound quality, #222 of 228 Large Size Floorstanding Speakers. See all Passive Home rankings for every top pick.

Klipsch Heresy IV · Editor's rating 2.3/5, ranked #222 of 228 Large Size Floorstanding Speakers
Check price at Amazon ($3,599.98 per pair) →13 percent above its usual $3,198 ↓ price history

Prices on this page were last checked November 11, 2026 at 3:26 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

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Brand: Klipsch

#222 Klipsch Heresy IV: $3,599.98 per pair Amazon $3,599.98 Crutchfield $3,599.98 eBay

Same family: the Klipsch Forte IV (larger floorstanding, ranked higher, rated 4/5), the Klipsch Cornwall IV (larger floorstanding, ranked higher, estimated 2.8/5), the Klipsch La Scala AL6 (larger floorstanding, ranked higher, estimated 2.8/5) and the Klipsch Klipschorn AK7 (larger floorstanding, ranked higher, estimated 3/5).

Pros: A compact horn loaded speaker with a 12 inch woofer and very high sensitivity, giving lively dynamics from modest amplifiers. Very high 94.5dB/2.83V/1m sensitivity in Erin’s anechoic measurement (well below Klipsch’s 99dB in-room claim, but still excellent) and strong short-term output from a 12-inch woofer plus horn-loaded midrange and tweeter. The compact, furniture-grade Heritage cabinet is easier to place than most high-efficiency designs, and dynamics at moderate levels can sound lively. A stable four-ohm-capable amplifier can produce substantial SPL with relatively little voltage. Measured bass extension of 77Hz (-3dB), with a measured sensitivity of 94.5dB.

Cons: Erin measured a 77Hz F3 and response rolling away near 100Hz in-room, so a subwoofer is required for modern full-range reproduction. The impedance dips to about 4 ohms, reducing the practical amplifier advantage implied by its sensitivity. Pronounced directivity mismatch at the driver transitions, impedance/response resonances and elevated distortion spikes around the crossover remain audible concerns that EQ cannot fully solve. At 102dB Erin measured roughly 1.5dB midband compression; at 96dB distortion rises around crossover. Performance is difficult to justify at the price, and Erin explicitly did not recommend it.

Is the Klipsch Heresy IV right for you?

Buy it if

  • you have a modest amplifier (94 dB sensitivity is easy to drive).

Skip it if

ReleasedAround 2020 (about 6 years ago)
Bass Extension (-10dB)50.0Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)77Hz (measured, Erin’s Audio Corner)
DIY KitNo
Dimensions24.8”H x 15.6”W x 13.3”D
Drivers1” horn-loaded tweeter; 1.75” horn-loaded midrange; 12” woofer
ImpedanceApproximately 4 ohms minimum (measured, Erin’s Audio Corner)
Sensitivity94.5dB/2.83V/1m (measured, Erin’s Audio Corner)
Spinorama Preference Score2.27
Spinorama Preference Score with Perfect Sub5.02
Weight45 lbs (20.4 kg) each
Woofer Cabinetported, rear
Check current price at Amazon ($3,599.98) →Check current price at Crutchfield ($3,599.98) →Search eBay for Klipsch Heresy IV →

Price history (per pair)

$3,198$3,599.98Aug 14, 2026 to Oct 6, 2026: $3,198Oct 6, 2026 to Nov 5, 2026: $3,599.98Aug 2026Nov 2026

$3,599.98 is 13 percent above its typical $3,198 over the last three months, and it has been as low as $3,198 (Aug 2026). It may be worth waiting for a sale.

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