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| Traditional Externally Prepolarized Precision Condenser Microphones and Preamplifiers |
Externally polarized microphones were the original standard for all test and measurement acoustic applications. This design utilizes a separate 200V power supply and special cables with 7 pin LEMO style connectors. Their ease of design enables a large product offering. Externally polarized microphones are typically used to replace microphones in existing older systems, or when a prepolarized alternative is not available.
Highlights
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| Externally Polarized (200 V) Precision Condenser Microphone Cartridges |
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Preamplifiers for Externally Polarized Microphones |
Model 426A30 is a rugged 1/2-inch diameter preamplifier optimized for use with externally polarized microphones. It is compatible with microphones as defined in the international standard IEC 61094, and connects to a 200 V power supply requiring a 7-pin cable with LEMO connectors. Model 426A31 is a 1/4-inch diameter preamplifier with integral 3 m (10 ft) cable that terminates with a 7-pin LEMO connector. |
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Microphone Power Supply
- 0 and 200 volt polarization voltage
- Extended battery life (40 hours)
- 0, 20, and 40 dB gain
- Selectable flat (Z), A, and C-weighting
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