Bruel & Kjaer 2669 1/2" Microphone Preamplifier
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Bruel & Kjaer 2669 is a general-purpose 1/2" microphone preamplifier with low noise, wide dynamic range, charge-injection calibration, and full EMC compliance.
Product details
| Model | 2669 |
| Manufacturer | Bruel & Kjaer |
| Category | Sound Level Meters |
| Availability | Made to order |
Description
Overview
The Bruel & Kjaer 2669 is a general-purpose preamplifier and high-impedance input probe for microphone measurement systems. It provides amplification and conditioning for 1/2" microphones and compatible models using adapters for 1", 1/4", and 1/8" formats. The preamplifier features low inherent noise and maintains high signal fidelity across a wide frequency range.
Key Features
- Compatible with 1/2" microphones (1", 1/4", and 1/8" with adapters)
- Very low inherent noise and high input impedance
- Low output impedance enabling use with long extension cables
- Wide dynamic range for measurement flexibility
- Detachable thin cable for easy installation
- Compact LEMO connector at preamplifier
- Patented charge-injection calibration for on-site calibration of entire measuring channel
- Full electromagnetic compatibility (EMC)
- Wide working temperature range
Applications
- Sound level and acoustics measurements
- Vibration analysis and monitoring
- Environmental noise surveys
- Laboratory and field sound measurements
Specifications
| Microphone Compatibility | 1/2", 1", 1/4", 1/8" (with adapters) |
| Connector | LEMO 0B 7-pin |
| Operating Temperature | -10°C to +60°C |
| Output Impedance | ≤200Ω |
| Input Impedance | ≥10 MΩ |
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Bruel & Kjaer 2669 1/2" Microphone Preamplifier
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