Klipsch Heritage Heresy IV
A 3-way floorstanding loudspeaker with horn-loaded drivers and 99dB sensitivity, part of Klipsch's long-running Heritage lineup.
Overview
The Klipsch Heritage Heresy IV is a floorstanding loudspeaker in Klipsch’s Heritage series, continuing a design lineage that began in 1957. Originally conceived as a compact center channel for Klipschorn owners, the Heresy was named by Paul Klipsch himself, who called it a "heresy" to not use a corner horn. The Heresy IV maintains the series' signature horn-loaded three-way design, engineered for accurate sound reproduction across low, mid, and high frequencies using premium materials and components.
Specifications
| Sensitivity | 99dB @ 2.83V / 1m |
| Power Handling (Continuous / Peak) | 100W / 400W |
| Nominal Impedance | 8 ohms |
| Frequency Response | 48Hz-20kHz (±3dB) |
| Crossover Frequency | 4500Hz |
| Tweeter | K-107-TI 1" (25mm) Titanium Diaphragm Compression Driver |
| Midrange | K-702 1.75" (44mm) Titanium Diaphragm Compression Driver |
| Woofer | K-28-E 12" (300mm) Fiber Composite Cone |
| Enclosure Type | Sealed |
| Inputs | Dual binding posts |
| Dimensions (H x W x D) | 23.81" x 15.75" x 13.19" (605 x 400 x 335mm) |
| Weight | 43.00 lbs (19.5kg) |
Design
The Heresy IV uses a three-way horn-loaded design with a sealed enclosure, featuring a 12" fiber composite cone woofer, a titanium diaphragm midrange driver, and a titanium compression tweeter. It includes dual binding posts connected by jumpers, allowing for bi-amping or bi-wiring. The system is engineered to deliver precise, high-efficiency sound reproduction using premium components for durability and long-term performance.
Context
The Heresy series has been in continuous production since its introduction in 1957, originally serving as a center channel companion to the Klipschorn. The Heresy IV is part of Klipsch’s Heritage lineup, preserving the brand’s acoustic philosophy while incorporating modern materials and construction techniques. It remains a sought-after model for audiophiles and vintage audio enthusiasts.
Market
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