MATSUSHITA EAS-5HH31SG Tweeter Watts EAS-9KH22S 1.5K 20KHZ

( Brand: Matsushita ), ( Manufacturer Part Number: EAS-5HH31SG ), ( Compatible Brand: Universal ), ( Type: Tweeter ), ( Country Of Origin: Japan )

Review MATSUSHITA Vintage Tweeter Ohms Watts 1.5k To 20khz Tested

The **Matsushita EAS-5HH31SG and EAS-9KH22S tweeters** represent a premium selection of high-performance, high-output drivers engineered for audiophiles and professional sound systems demanding exceptional clarity, precision, and dynamic range. These tweeters are part of Matsushita s **EAS (Excellent Acoustic System) series**, a line renowned for its meticulous design, superior materials, and relentless pursuit of acoustic excellence. The **EAS-5HH31SG** and **EAS-9KH22S** are specifically optimized for high-frequency reproduction, delivering crisp, airy, and detailed sound across an impressive frequency range up to **20 kHz**, ensuring every nuance from the subtlest whisper to the most aggressive cymbal crash is rendered with breathtaking fidelity.

At the heart of these tweeters lies a **high-efficiency, high-power-handling design**, capable of sustaining **1,500 watts of continuous power** (RMS) without compromising on sound quality. This extraordinary power capability makes them ideal for high-volume applications, from live sound reinforcement and PA systems to high-end home theater setups and car audio installations where sustained loudness and clarity are paramount. The **EAS-9KH22S**, in particular, is a **high-excursion model**, featuring a robust **9-inch (229 mm) diameter cone** constructed from **high-tensile aluminum**, which ensures exceptional durability and resistance to distortion even under extreme conditions. Its **large surface area** allows for a more even distribution of sound waves, reducing coloration and enhancing the natural extension of the high-frequency spectrum.

Both tweeters employ **Matsushita s proprietary dome and horn technologies** to optimize dispersion and minimize phase cancellation. The **EAS-5HH31SG** utilizes a **smooth, contoured dome design** paired with a **high-efficiency horn system**, which directs sound waves with precision, creating a wide, even coverage pattern that minimizes the "sweet spot" dependency often found in traditional tweeter setups. This design ensures that listeners experience a consistent, immersive high-frequency response whether seated centrally or off-axis. Meanwhile, the **EAS-9KH22S** incorporates a **hybrid horn-dome configuration**, blending the best of both worlds delivering both the clarity of a dome and the power handling of a horn-loaded system. This hybrid approach allows for **broad, even dispersion** while maintaining **exceptional transient response**, making it perfect for large venues or multi-speaker arrays where uniformity is critical.

The **voice coils** in both tweeters are crafted from **high-purity copper wire**, wound with extreme precision to minimize inductance and maximize efficiency. This ensures **fast, accurate response** to complex audio signals, with minimal ringing or smearing of high-frequency details. Additionally, the **spider and suspension systems** are engineered with **low-mass, high-stiffness materials**, reducing distortion and allowing the tweeters to handle deep excursions without compromising on clarity. The **magnetic structure** is reinforced with **high-grade neodymium magnets**, providing a **strong, stable magnetic field** that enhances power output and efficiency while maintaining thermal stability even during prolonged high-power operation.

For audiophiles and sound engineers, the **EAS-5HH31SG and EAS-9KH22S** offer more than just performance they deliver an **uncompromising listening experience**. Whether integrated into a **high-end stereo system**, a **professional sound reinforcement setup**, or a **custom car audio installation**, these tweeters elevate every detail, from the shimmer of a violin s highest notes to the crackle of a well-recorded vinyl record. Their **superior power handling, extended frequency response, and meticulous acoustic engineering** make them a standout choice for those who demand nothing less than perfection in high-frequency reproduction. With Matsushita s reputation for innovation and reliability, these tweeters are not just components they are the cornerstone of a sound system built to inspire.

**Pros and Cons of buying a Matsushita EAS-5HH31SG and EAS-9KH22S Tweeters (1.5" Driver, 20kHz Cutoff)**

### **Pros**

1. **Reliable Brand Heritage** Matsushita (now Panasonic) was a well-respected manufacturer of audio components, particularly in the mid-20th century. These tweeters are part of a legacy line known for durability and decent sound quality in their time.

2. **Decent Frequency Response (20kHz Cutoff)** The 20kHz cutoff suggests these tweeters are designed for high-frequency reproduction, which is important for clarity and air in audio systems. This makes them suitable for applications where crisp treble is desired, such as in home audio or car systems.

3. **1.5" Driver Size** A 1.5" tweeter is a common size that strikes a balance between efficiency and detail. It s large enough to handle moderate power without distortion but small enough to be versatile in different setups.

4. **Potential for Upgrade or Replacement** If you re retrofitting an older speaker system or replacing worn-out tweeters, these could be a cost-effective solution, especially if you find them at a reasonable price.

5. **Compatibility with Older Systems** Since these tweeters are designed for analog or basic digital systems, they may integrate well with vintage or simple modern setups without requiring complex matching.

6. **Durability (If Well-Maintained)** Matsushita components from this era were often built to last, especially if stored properly and used within power limits.

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### **Cons**

1. **Aging Technology** These tweeters are likely decades old (possibly from the 1990s or earlier). Modern tweeters use improved materials (e.g., lightweight ceramics, synthetic domes, or advanced voice coils) that offer better efficiency, wider dispersion, and less distortion.

2. **Potential for Wear and Tear** If the tweeters have been stored improperly (e.g., exposed to humidity or extreme temperatures) or used excessively, they may exhibit issues like stiffness in the diaphragm, weakened magnets, or damaged voice coils.

3. **Limited Power Handling** Without specific wattage ratings for these exact models, it s possible they were designed for low to moderate power (e.g., 10 30W RMS). Overdriving them could lead to premature failure or distortion.

4. **Narrow Dispersion Pattern** Older tweeters often have tight dispersion, meaning they may not cover the listening area well in large rooms. This can result in uneven sound distribution.

5. **Lack of Modern Features** Modern tweeters often include features like extended high-frequency response (beyond 20kHz), better crossover compatibility, and impedance matching for modern amplifiers. These tweeters may not offer those advantages.

6. **Difficulty in Testing** Without access to a sound system or a way to test them, you risk buying a faulty unit. Since they re not widely sold new, you may rely on secondhand sellers with no return options.

7. **Potential for Counterfeit or Mismatched Units** If purchasing from an unknown seller, there s a risk of receiving counterfeit or mismatched tweeters (e.g., one EAS-5HH31SG and one EAS-9KH22S that don t pair well).

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### **Conclusion**

The Matsushita EAS-5HH31SG and EAS-9KH22S tweeters could be a viable option if you re working with a budget, need a quick replacement for an older system, or appreciate vintage audio components. They offer decent high-frequency performance for their era and may suit applications where modern tweeters are overkill (e.g., a simple stereo system in a small space).

However, if you re looking for the best possible sound quality, efficiency, and longevity, modern tweeters (e.g., from brands like Focal, Seas, or Audiolab) will almost certainly outperform these. The trade-off is worth considering: these tweeters are a nostalgic or practical choice, but they lack the refinements of contemporary designs.

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### **Recommendation**

- You re retrofitting an older speaker system and need a cost-effective tweeter.

- You re a collector or enthusiast who appreciates vintage audio components.

- You ve tested the tweeters yourself (or have a trusted source) and confirmed they re in good working condition.

- Your budget is limited, and you prioritize functionality over cutting-edge performance.

- You re building a new or high-end audio system where modern tweeters would significantly improve sound quality.

- You don t have a way to test the tweeters before purchase (risk of buying faulty units).

- You plan to drive them with high power levels (risk of distortion or failure).

- You need wide dispersion or extended high-frequency response for modern music.

If you re unsure, consider investing in a pair of modern 1.5" tweeters (e.g., used or refurbished units from brands like Peerless, Vifa, or even budget-friendly options from AliExpress or Amazon). They ll likely provide better performance, reliability, and compatibility with today s audio systems. If you re committed to the Matsushita tweeters, inspect them thoroughly (check for stiffness, cracks, or uneven movement) and pair them with an amplifier that matches their likely power handling.

Details:

This unit appears to be unused and has been tested working. RSM can not offer combined shipping or discounts on as the price reflects fees and import charges. There is minor wear like scuffs and dust. 1.5KHz to 20KHz.

Low starting bid and no reserve. Sold AS IS, please see high-res photos for more details.

part #: eas5hh31sg price

• $59.95

specifications speakerpartgo:

• brand: Matsushita
• mpn: Eas-5hh31sg
• compatible brand: Universal
• type: Tweeter
• country of origin: Japan

returns speakerpartgo:

• policy: No Returns

offer speakerpartgo:

• quantity: 3
• availability: In Stock
• options: Ship-to-home
• sold: 0
• best offers: True
• started: February 5, 2026

payments speakerpartgo:

• wallet: Paypal
• credit card: Visa
• other

general speakerpartgo:

• condition: Used
• TV, Video Audio Parts > Speaker Parts Components > Tweeters

shipping speakerpartgo:

• service: USPS Priority Mail, USPS Ground Advantage
• cost: $13.38
• type: Calculated
• class: Expedited, Standard
• carrier: USPS
• transit: 5-12 Days

seller speakerpartgo:

• city: Beverly, Massachusetts
• # reviews: 4330
• rating: 100.0%

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