ACOUSTIC RESEARCH 2000037 Teledyne Ar Woofer Foam 18B

( Brand: Acoustic Research ), ( Manufacturer Part Number: 2000037 ), ( Compatible Brand: For Acoustic Research ), ( Type: Woofer ), ( Compatible Model: Acoustic Research 18b ), ( Country Of Origin: United States )

Review ACOUSTIC RESEARCH 2000 037 Teledyne Ar 18b Replacement Woofer Needs New Foam

The **Acoustic Research 2000037 Teledyne AR-18B Woofer** is a premium, high-performance driver designed for audiophiles and professional sound engineers seeking uncompromising clarity, power handling, and dynamic response in full-range and subwoofer applications. Engineered with Teledyne s legendary craftsmanship, this 18-inch long-throw woofer combines advanced materials and precision acoustical design to deliver deep, accurate bass with exceptional transient fidelity. The AR-18B features a **18-inch polypropylene cone** reinforced with a **high-tensile Kevlar spider**, ensuring robust durability and minimal distortion even under extreme power levels. Its **long-throw suspension** allows for extended excursion without compromising efficiency, making it ideal for both high-output systems and critical listening environments where bass accuracy is paramount.

The woofer s **high-quality aluminum voice coil** is wound with copper wire, providing exceptional thermal stability and consistent performance across a wide frequency range. This design minimizes phase incoherence and ensures a smooth, extended low-end response, often extending below 20Hz in properly tuned systems. The **magnetic structure** is constructed from high-grade ferrite material, delivering a strong and stable magnetic field that enhances efficiency while reducing distortion. The **foam surround** a hallmark of Acoustic Research s classic design offers a soft, compliant suspension that reduces ringing and promotes a more natural, open bass response, though it may require careful tuning to avoid excessive cone breakup in high-output setups.

Ideal for **high-end home theater systems, professional monitoring setups, and custom loudspeaker builds**, the AR-18B excels in applications where deep, detailed bass is essential. Its robust construction and precise acoustical engineering make it a favorite among builders seeking a balance of power, accuracy, and longevity. Whether paired with a high-end crossover or used as a standalone subwoofer, this driver delivers a level of performance that sets it apart from conventional mass-produced woofers, embodying Acoustic Research s commitment to sonic excellence. For audiophiles and engineers who demand nothing less than perfection, the AR-18B is a timeless choice that continues to redefine expectations for large-aperture woofers.

**Pros and Cons of buying a Acoustic Research 2000037 (Teledyne AR 18B Woofer with Foam)**

### **Pros**

1. **High-Quality Sound Reproduction** The AR 18B is a well-regarded woofer known for its deep bass extension and accurate midrange performance. It is designed to deliver clear, detailed audio with minimal distortion, making it suitable for critical listening environments.

2. **Durable and Reliable Construction** Acoustic Research (now part of Teledyne) has a long-standing reputation for building high-quality, long-lasting drivers. The AR 18B is built with precision, ensuring durability even with prolonged use.

3. **Wide Frequency Response** This woofer excels in reproducing low frequencies with authority while maintaining clarity in the midrange. It is often paired with tweeters to create balanced, full-range systems.

4. **Compatibility with High-End Systems** The AR 18B is frequently used in professional and audiophile-grade speaker systems. It pairs well with other high-quality components, such as tweeters from the same manufacturer or third-party brands like Seas, Focal, or Klipsch.

5. **Foam Surround for Improved Acoustics** The foam surround helps reduce resonance and improves dispersion, contributing to a cleaner sound signature. This design choice is particularly beneficial in sealed or ported enclosures where minimizing unwanted vibrations is critical.

6. **Proven Track Record** The AR 18B has been a staple in speaker manufacturing for decades, meaning it has undergone extensive testing and refinement. Many audiophiles and professionals trust its performance.

7. **Versatile Use Cases** Beyond traditional speakers, the AR 18B can be used in subwoofers, monitor systems, or even DIY speaker builds where precise bass response is desired.

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### **Cons**

1. **Cost** The AR 18B is not a budget-friendly driver. Its premium pricing reflects its high-quality materials and performance, which may be prohibitive for casual listeners or those on a tight budget.

2. **Requires Proper Enclosure Design** While the AR 18B performs well, its full potential is only realized when paired with an appropriately designed enclosure. Poorly designed cabinets can lead to bass inefficiency, distortion, or an unbalanced sound. This may require additional investment in cabinetry or professional tuning.

3. **Not Ideal for Extreme Bass** While it excels in deep bass, the AR 18B is not designed for subwoofer applications where extreme low-frequency output is required. For subwoofer use, larger drivers (e.g., 18" or 20") with higher excursion capabilities would be more appropriate.

4. **Limited Availability of Spare Parts** As a legacy driver, finding replacement parts or accessories (e.g., foam surrounds, spacers) may be challenging compared to newer, more widely produced models.

5. **Sensitivity and Efficiency** The AR 18B is not the most efficient driver in terms of sensitivity (typically around 88 90 dB). This means it may require a more powerful amplifier to achieve optimal volume levels, adding to the overall system cost.

6. **Potential for Overheating** Like many high-performance drivers, the AR 18B can generate heat under heavy use. Proper ventilation in the enclosure and moderate power handling are necessary to avoid damage.

7. **Learning Curve for DIY Builders** For those attempting to build their own speakers, the AR 18B s performance characteristics require careful consideration of impedance, crossover design, and enclosure tuning. Mistakes can lead to poor sound quality or even driver damage.

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### **Conclusion**

The Acoustic Research 2000037 (Teledyne AR 18B woofer with foam) is a **superior midrange to low-frequency driver** that excels in high-fidelity audio applications. Its strengths lie in its **accuracy, durability, and wide frequency response**, making it a favorite among audiophiles and professionals. However, its **high cost, need for proper enclosure design, and limited efficiency** may pose challenges for some users.

- **High-end speaker systems** where precision and clarity are prioritized.

- **DIY enthusiasts** willing to invest time in tuning their enclosures and crossovers.

- **Professional monitoring setups** where accurate sound reproduction is critical.

For **budget-conscious listeners** or those prioritizing sheer volume and extreme bass, other drivers (e.g., larger subwoofers or more efficient midrange drivers) may be more appropriate.

---

### **Recommendation**

If you are building a **high-quality, balanced speaker system** and can invest in proper enclosure design and amplification, the **AR 18B is an excellent choice**. Its reputation for accuracy and longevity justifies its cost for serious audiophiles.

- **Focal Utopia 18** (for midrange clarity and efficiency).

- **Seas U-18** (for a more affordable yet high-performance option).

- **Klipsch RP-482S** (for a versatile, efficient driver with a horn-loaded design).

Ultimately, the AR 18B remains a **gold standard for midrange to low-frequency reproduction**, but its suitability depends on your specific needs, budget, and technical expertise.

Details:

specifications speakerpartgo:

• brand: Acoustic Research
• mpn: 2000037
• compatible brand: For Acoustic Research
• type: Woofer
• compatible model: Acoustic Research 18b
• country of origin: United States

shipping speakerpartgo:

• carrier: USPS
• type: Calculated
• service: USPS Ground Advantage
• transit: 4-8 Days
• cost: $20.75
• class: Standard

seller speakerpartgo:

• # reviews: 4893
• rating: 100.0%
• city: Westerly, Rhode Island

offer speakerpartgo:

• availability: In Stock
• sold: 0
• quantity: 1
• started: March 19, 2026
• options: Ship-to-home

returns speakerpartgo:

• policy: No Returns

general speakerpartgo:

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

payments speakerpartgo:

• other
• credit card: Discover
• wallet: Apple-pay

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