Physics equipment
Microphone Box
Universal dual-channel amplifier for electret microphones, designed for speed-of-sound experiments and required for Kundt’s Tube E. Each channel can be switched between Signal, Level and Trigger modes, with adjustable preamplifier sensitivity and trigger threshold for direct connection to measuring instruments and oscilloscopes.
Specifications
- Brand
- 3B Scientific · 1014520
- Channels
- 2 separate channels for electret microphones
- Output signal
- switchable between Signal, Level and Pulse
- Signal
- 0 - 14 Vpp max.
- Level
- 0 - 7 V DC max.
- Puls
- low: 0 V, High: 8 V DC; length: 150 ms
- Output impedance
- 1 kΩ
- Gain
- 20x to 70x
- Band width
- 10 Hz to 42 kHz
- Sensitivity using microphone (item no: 4008308)
- 800 mVpp approx. at 80 dB noise level, 1 kHz and minimum gain
- Inputs
- 3.5 mm jack plugs
- Outputs
- BNC socket
- Voltage supply
- via plug-in power supply 12 V AC, 500 mA
- Dimensions
- 100 mm x 75 mm x 35 mm approx.
- Weight
- 450 g approx. incl. plug-in power supply
from
€266.00
Variants & pricing
Microphone Box
1014520€266.00