High Impedance Speakers: What They Are, How They Work, and Professional Applications
In the field of professional audio and sound reinforcement, high impedance speakers represent one of the most efficient solutions for installation projects where long cable runs and cost optimization are critical. These types of loudspeakers are increasingly in demand in sectors such as public address systems, commercial audio, and distributed sound systems, as they allow resources to be optimized without compromising quality.
What Are High Impedance Speakers?
A high impedance speaker is designed to operate in 70V, 100V configurations, or with impedance values higher than the typical 8Ω or 4Ω. These systems make it possible to connect multiple loudspeakers in parallel to a single amplifier without complex impedance load calculations.
In low impedance systems, cable length and distance have a critical impact on power loss and fidelity. By contrast, with high impedance speakers, the signal can travel long distances with minimal losses. This makes them the ideal solution for:
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Shopping malls and retail
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Hotels and resorts
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Airports and transportation hubs
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Conference centers and corporate facilities
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Public address and evacuation systems
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Advantages of High Impedance Speakers
The main technical advantages of high impedance systems are:
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Flexible installation: multiple speakers can be connected to the same amplifier without load issues.
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Long distance coverage: minimizes signal loss over long cable runs.
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Cost optimization: reduces cable thickness and simplifies system design.
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Scalability: allows additional speakers to be added easily without reconfiguring the entire system.
A Unique Case Worldwide: Tecnare IBZA6HZ
Within the category of high impedance speakers, one model stands out as truly unique: the Tecnare IBZA6HZ.
Unlike conventional high impedance systems that rely on transformers—which often introduce distortion, dynamic loss, and frequency response limitations—the IBZA6HZ operates at 40 ohms impedance without a transformer, ensuring superior sound fidelity while maintaining all the advantages of a high impedance system in a single design.
Technical Specifications of the Tecnare IBZA6HZ
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Design: Compact trapezoidal loudspeaker, bass-reflex.
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Transducer: 1 × 6½” mid-impedance cone driver.
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Nominal impedance: 40 Ω (transformerless).
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Maximum SPL: 117 dB.
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Frequency response: 110 Hz – 20 kHz with very low distortion.
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Coverage: 70° conical.
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Finish: Weather-resistant polyurethane coating with steel grille.
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Mounting: Multiple internal M6 points and 3/8” pole mount socket.
Applications
The IBZA6HZ is optimized for speech applications (conferences, broadcast studios, meeting rooms) and also for music reproduction (when combined with Tecnare® subwoofers, it delivers a high-fidelity distributed audio system).
This makes it a unique solution for projects requiring maximum audio quality within high impedance systems, while preserving all the advantages of flexible and efficient installations.
Conclusion
High impedance speakers are essential in installation projects where multiple sound points and long cable runs are required. In this context, the Tecnare IBZA6HZ marks a turning point in the industry: the only loudspeaker in the world with 40 ohms impedance without a transformer, combining the versatility of high impedance systems with the high fidelity of low impedance loudspeakers.
This innovation consolidates Tecnare as a global reference in professional audio installation technology.