Bruel & Kjaer 2639 Microphone Preamplifier
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Bruel & Kjaer 2639 is a microphone preamplifier with 2Hz to 200kHz frequency response, high input impedance, and very low inherent noise.
Product details
| Model | 2639 |
| Manufacturer | Bruel & Kjaer |
| Category | Sound Level Meters |
| Availability | Made to order |
Description
Overview
Bruel & Kjaer 2639 is a microphone preamplifier designed for precision audio and vibration measurement applications. It provides high input impedance and very low inherent noise characteristics.
Key Features
- Frequency response: 2Hz to 200kHz (±0.5dB)
- High input impedance
- Very low inherent noise
- 50 Ohm output impedance
- 2-meter cable length
- Supports 1", 1/4", and 1/8" microphone types via adapters
Applications
- Precision audio measurement
- Vibration analysis
- Acoustic testing and analysis
Specifications
| Frequency Response | 2Hz to 200kHz (±0.5dB) |
| Input Impedance | High |
| Output Impedance | 50 Ohm |
| Cable Length | 2 meters |
| Microphone Types Supported | 1", 1/4", 1/8" (via adapters) |
| Noise Level | Very low |
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Bruel & Kjaer 2639 Microphone Preamplifier
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