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  3. BR EL KJ 4131

BR EL KJ 4131 Bruel Kjar Microphone

4131 Br El & Kj R Bruel And Kjar Microphone

( Brand: Br El Kj ), ( Manufacturer Part Number: 4131 ), ( Part Type: Microphone ), ( Form Factor: Condenser Microphone )

Review BR EL KJ Bruel And Kjar Microphone

The EL KJ 4131 Bruel & Kjaer Microphone is a high-precision, professional-grade acoustic measurement microphone designed for a wide range of applications. This microphone is part of Bruel & Kjaer's renowned product line, known for their commitment to accurate and reliable measurement solutions.

The EL KJ 4131 is a condenser microphone, specifically designed for use in sound and vibration measurements. It features a flat frequency response from 20 Hz to 20 kHz, ensuring accurate measurement of sound levels across the entire audible spectrum. The microphone's diaphragm is made from high-quality Mylar, ensuring excellent sensitivity and linearity.

The microphone comes with a built-in preamplifier, which is integrated into the microphone body itself. This design feature reduces the risk of cable-borne noise and ensures a clean, clear signal. The preamplifier also offers a high common-mode rejection ratio, further minimizing the impact of electromagnetic interference.

The EL KJ 4131 is designed to withstand harsh environments, with a rugged construction that includes a hard-anodized aluminum body and a Kevlar reinforced cable. The microphone is also shock and vibration resistant, making it ideal for use in industrial settings.

The microphone also includes a number of extra features to enhance its versatility. It has a selectable sensitivity of 0.5, 1, or 5 mV/Pa, allowing it to be used in a variety of measurement environments. It also features a built-in impedance converter, which allows it to be used with a wide range of measurement equipment.

In summary, the EL KJ 4131 Bruel & Kjaer Microphone is a high-quality, versatile, and durable acoustic measurement microphone, ideal for use in a wide range of applications. Its flat frequency response, rugged construction, and built-in preamplifier make it a reliable choice for professionals in the fields of sound and vibration measurement.

The Bruel & Kjaer Type 4131 Microphone is a professional-grade measurement microphone often used in acoustics, vibration analysis, and noise and vibration control applications. Here are some pros and cons to consider before making a purchase:

Pros:

1. High-quality construction: The microphone is built to withstand harsh environments, featuring a rugged, anodized aluminum body and a gold-plated diaphragm.

2. Wide frequency response: The 4131 microphone offers a frequency response of 6 Hz to 22 kHz, making it suitable for a wide range of measurements.

3. Low self-noise: With a self-noise level of 15 dB SPL, this microphone is excellent for capturing low-level sounds.

4. Calibration traceable to international standards: The microphone comes with a calibration certificate traceable to international standards, ensuring its accuracy.

5. Versatile connectivity options: The microphone offers both 1/4" and BNC connectors, allowing for easy integration with various measurement equipment.

Cons:

1. High cost: The Bruel & Kjaer Type 4131 Microphone is a premium product, and its price may be prohibitive for some users.

2. Sensitivity: While the microphone's low self-noise is an advantage, its relatively high sensitivity may require the use of preamplifiers or other signal conditioning equipment to prevent overloading.

3. Limited directionality: The microphone has an omnidirectional pickup pattern, which may make it less suitable for certain applications where directional sensitivity is required.

4. Requires calibration: While the microphone comes with a calibration certificate, it should be re-calibrated periodically to maintain its accuracy.

Conclusion:

If you are in need of a high-quality, professional-grade microphone for acoustic or vibration measurements, the Bruel & Kjaer Type 4131 Microphone is an excellent choice. Its rugged construction, wide frequency response, and low self-noise make it ideal for a variety of applications. However, its high cost and the need for calibration should be considered before making a purchase. If budget is a concern, there may be more affordable alternatives available that still meet your needs. It is recommended to carefully evaluate your requirements and compare different options before making a decision.

Details:

Serial number 180141. BruEl Kjar Microphone 4131 in original wood en case.

part #: 4131 price

  • $149.00

specifications micwisys:

  • brand: Br El Kj
  • mpn: 4131
  • part type: Microphone
  • form factor: Condenser Microphone

returns micwisys:

  • method: Money back
  • paid by: Buyer
  • time: 30 Days
  • policy: Returns Accepted

general micwisys:

  • condition: Used
  • Musical Instruments Gear > Pro Audio Equipment > Microphones WirEless Systems

offer micwisys:

  • options: Ship-to-home
  • sold: 0
  • started: May 17, 2025
  • quantity: 1
  • best offers: True
  • availability: In Stock

shipping micwisys:

  • carrier: USPS
  • class: Standard
  • service: USPS Ground Advantage
  • cost: $7.15
  • transit: 4-10 Days
  • type: Calculated

sEller micwisys:

  • # reviews: 2449
  • rating: 100.0%
  • city: Great Falls, Virginia

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part type: microphone, form factor: condenser microphone,
category: musical instruments > pro audio equipment > microphones wireless systems, sku: 12692192506811721,
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1 offer $149.00 USD
  • Used. Offer #1 priced at $149.00 + $0.00 shipping estimate = $149.00* total. Read more about B&K microphone systems here. Photos are of actual item.FREE SHIPPING

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