Piezo Loudspeakers

Piezo Loudspeakers from ISL deliver exceptional sound quality in a slim-line, modular profile designed for harsh environments. Featuring non-magnetic construction and moisture-resistant materials, ISL piezoelectric speakers provide a lightweight and durable audio solution for mission-critical applications.

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Component Benefits

Partnering with ISL for your piezoelectric audio needs provides a "Value-Added" solution that prioritizes material durability and acoustic precision.

Non-Magnetic Design: Ideal for MRI-compatible devices and magnetically sensitive environments.
Slim-Line Profile: Modular, thin-form factor allows for integration into compact electronic housings.
Environmental Resilience: Phenolic cone options provide superior resistance to humidity and salt spray.
Broad Frequency Range: Delivers clear, high-fidelity sound across a wide spectrum of audible frequencies.
Lightweight Construction: Significantly reduces total system weight compared to magnetic alternatives.

Component Applications

ISL piezo loudspeakers provide reliable audio in spaces where traditional speakers fail:

Medical Imaging: MRI suites, MSR (Magnetically Shielded Rooms), and OPM-MEG suites.
Computing & Mobile: High-fidelity sound for laptops, tablets, and desktop workstations.
Outdoor Systems: Weather-resistant speakers for public address and marine environments.
Retail Automation: Vending machines, automated kiosks, and digital signage.
Home Electronics: Slim-profile televisions and portable radios.

Component Parameters

Cone Material: Phenolic (Harsh Environments) / Paper (Standard)
Sound Pressure Level (SPL): High-output optimized
Frequency Response: Wide-range fidelity
Impedance: High-impedance (Easy to drive)
Mounting: Flexible modular configurations
Termination: Terminals, Lead Wires, or Custom Connectors

Optimized Piezo Loudspeakers

ISL Products not only meets, but exceeds expectations when it comes to Piezoelectric Loudspeakers. Our piezo speakers are modular in their design and deliver exceptional sound quality in a slim-line profile. These speakers can be configured with multiple options to best accommodate your specific application. The distinctive characteristics of our piezo speakers make them the ultimate solution for any harsh environment application.

Piezo speakers are constructed with a piezoelectric ceramic disc or piezo element that resonates with sound. Due to the nature of piezo technology, piezoelectric speakers are resistant to being over-driven and can be used without a crossover. A piezo speaker is much easier to drive when compared to the typical magnetic speaker. Since our piezo loudspeakers are non-magnetic they are remarkably lightweight. Additionally, ISL piezo loudspeakers are suitable for applications that require a broad frequency range. We have been successfully manufacturing piezo speaker solutions to our customers for decades. Our expertise and knowledge allow us to better understand your sound output requirements and design constraints. ISL’s engineering team works side by side with your team to provide a long-lasting piezo speaker solution.

Unparalleled Performance

Our loudspeakers utilize the latest in material technologies to make sure that all audible sounds come across clear, no matter the current output power. Our piezo material has been tested, using a square wave audio amplifier, to ensure a full range of output and guarantee high fidelity sounds and absolute audio quality. Electromechanical interference, hash environments, high altitudes, and even maritime use are no challenge for our phenolic cones and high quality piezoelectric material. For less harsh environments, we offer paper cone versions.

For optimal acoustics, we suggest to pair our piezo loudspeakers and piezo tweeters together. This ensure a true full range of sound output, the lower bass tones will come from the loudspeaker while the tweeter will handle the higher frequency sounds.

Frequently Asked Questions

The primary difference between piezo speakers and regular electrodynamic loudspeakers lies in their technology and construction. Piezo speakers utilize piezoelectric materials that vibrate to produce sound, making them lightweight and compact. They are known for their efficiency and resistance to over-driving, allowing them to operate without a crossover. However, traditional piezo speakers often struggle with low-frequency reproduction and have a narrower dispersion pattern compared to regular speakers, which use a voice coil and permanent magnet to generate sound across a wider frequency range.

In contrast, regular speakers typically deliver richer bass and broader sound dispersion but are bulkier and less efficient. Newer generations of piezo speakers, have improved low-frequency performance, making them a viable alternative to traditional loudspeakers for various applications.

The loudness of a piezo speaker can vary significantly based on its design, enclosure, size, and application. Generally, piezo speakers can produce sound levels ranging from 80 to 120 decibels (dB), depending on the specific model and its intended use. While they excel in high-frequency output, their performance in low-frequency ranges (below 400 Hz) has historically been limited. Despite their efficiency, piezo speakers typically require higher voltages to achieve optimal performance and are often used in applications where compactness and lightweight design are crucial. Thus, their loudness, while impressive, should be considered alongside their unique acoustic characteristics.

Yes, piezoelectric speakers are considered good for several reasons. They can be manufactured extremely thin, which allows for compact designs suitable for small devices like digital watches and alarms. Their ability to operate in diverse environments, including underwater, makes them more robust than traditional electrodynamic speakers, which require protection from elements. Piezoelectric speakers also produce high clarity sound, rivaling or even surpassing older technologies, making them effective for various audio applications. Moreover, they can generate sound through the piezoelectric effect, enabling efficient sound production without the physical limitations of magnets and coils found in electrodynamic speakers. Overall, their versatility, durability, and sound quality establish piezoelectric speakers as a valuable choice in modern electronics.

Piezoelectric speakers have several disadvantages. Firstly, their pitch range is limited compared to electrodynamic speakers, making them less suitable for complex audio reproduction. With the proper pairings though, a combination of different piezo loudspeakers can cover the entire frequency range, providing unprecedented output. Piezoelectric loudspeakers require higher drive voltages and large amounts of current at high frequencies, which can complicate circuit design and increase power consumption. They require specific drivers and audio IC’s for proper functionality. Their sound quality may not be as clear or rich as that of traditional speakers, particularly in low-frequency ranges.

Case Studies

Piezoelectric Loud Speaker for Harsh Environments