Overview

The Klipsch La Scala AL5 is a three-way fully horn-loaded loudspeaker from the Heritage series, continuing Paul W. Klipsch’s 1946 design philosophy. This large floorstanding speaker features updated drivers and crossover networks while maintaining the original horn-loaded technology for high efficiency dynamics. Priced at 13,198 USD per pair, it targets audiophiles seeking heritage design with modern refinements in substantial 201-pound packages.

Scientific Validity

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The La Scala AL5 demonstrates excellent sensitivity performance with measured 101.3dB(B)/2.83V/m [1]. This exceptional efficiency allows meaningful volume levels with minimal amplifier power. However, frequency response shows problematic deviations including woofer peaks between 100Hz-200Hz, excess upper midrange energy near 3kHz, and tweeter level approximately 3dB too high [1]. The specified ±4dB frequency response tolerance falls between problematic (±3dB) and transparent (±1dB) levels for speakers. Impedance characteristics present concerns with drops to 4.17 ohms and EPDR values as low as 1.9 ohms [1], creating challenging amplifier loads despite high sensitivity. No comprehensive third-party THD, SNR, or distortion data available for complete evaluation, but high sensitivity contributes positively to overall scientific validity.

Technology Level

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The AL5 employs established Tractrix and exponential horn technologies with proprietary heritage patents dating to 1945 [3]. Design demonstrates solid in-house expertise with over 75 years of accumulated horn loading knowledge and continuous production experience. However, technology implementation relies primarily on mature analog approaches without significant modern advancement. Limited integration of contemporary digital signal processing, advanced materials, or measurement-driven optimization reduces technological sophistication compared to current industry standards. The polymer driver materials and updated crossover components represent modest evolutionary improvements to classic designs.

Cost-Performance

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At 13,198 USD per pair, cost-performance must be based on measured performance, not construction. As a passive floorstanding pair, equivalent-or-better measured performance is available from Polk Audio Reserve R700 with CTA-2034 (Klippel NFS) data showing on-axis linearity within approximately ±2 dB and low harmonic distortion at 86/96 dB @1m [5]. Current official price is 1,199 USD each (2,398 USD/pair) [6]. CP = 2,398 USD ÷ 13,198 USD = 0.1816 → 0.2 (rounded to one decimal place). Rationale of equivalence: passive floorstanding speakers with comparable user-facing functions; measured frequency response deviation and distortion are equivalent-or-better on the comparator.

Reliability & Support

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Exceptional 10-year warranty coverage significantly exceeds industry standard 2-year periods [4]. Simple passive design with minimal electronic components provides inherent reliability advantages. Established global dealer network of approximately 500 dealers [1] supports comprehensive service infrastructure. Klipsch’s Heritage product line benefits from continuous production history and specialized support systems. Solid wood construction and proven horn design demonstrate long-term durability track record. Premium support infrastructure and extended warranty coverage provide strong reliability assurance.

Rationality of Design Philosophy

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Poor rationality in design philosophy with emphasis on heritage marketing over scientific advancement. While horn loading provides measurable efficiency benefits, overall approach prioritizes subjective “lifelike sound” claims, nostalgic appeal, and premium materials over measurement-driven optimization. Conservative philosophy actively resists modern DSP, digital room correction, or frequency response optimization that could address documented measurement issues. Massive cost allocation toward heritage brand value, premium wood construction, and oversized physical presence without corresponding performance benefits. Claims of “controlled frequency response” contradict measured ±4dB deviations and frequency peaks, demonstrating disconnect between marketing philosophy and scientific results.

Advice

The La Scala AL5 suits users prioritizing premium Heritage series aesthetics and highest efficiency in Klipsch’s three-way horn lineup. Consider if the 3dB efficiency advantage and distinctive aesthetics justify the substantial cost premium over the Cornwall IV (5,998 USD/pair, 102dB). For users seeking three-way horn functionality with better cost-performance, the Cornwall IV provides equivalent user-facing capabilities with updated drivers and similar build quality. Ensure amplifier compatibility with challenging 4-ohm loads and irregular impedance characteristics. The cost premium reflects Heritage series positioning rather than proportional performance improvements.

References

[1] Stereophile - Klipsch La Scala AL5 loudspeaker Measurements, https://www.stereophile.com/content/klipsch-la-scala-al5-loudspeaker-measurements, accessed September 18, 2025

[2] Klipsch - Cornwall IV Floorstanding Speaker, https://www.klipsch.com/products/cornwall-iv-floorstanding-speaker, accessed September 18, 2025

[3] Stereophile - Klipsch La Scala AL5 loudspeaker, https://www.stereophile.com/content/klipsch-la-scala-al5-loudspeaker, accessed September 18, 2025

[4] Klipsch - Warranty Heritage Products, https://www.klipsch.com/warranty-heritage-products, accessed September 18, 2025

[5] Erin’s Audio Corner - Polk Audio Reserve R700 Tower Speaker Review (Klippel NFS measurements), https://www.erinsaudiocorner.com/loudspeakers/polk_r700/, accessed September 18, 2025

[6] Polk Audio - Reserve R700 Product Page (price), https://www.polkaudio.com/en-us/product/home-speakers/floor-standing/reserve-r700/300035.html, accessed September 18, 2025

(2025.9.18)