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Preamplifier Type 2673

TYPE 2673

½-INCH MICROPHONE PREAMPLIFIER WITH INSERT VOLTAGE FACILITY

Designed to allow calibration of ½" and 1" condenser microphones by the insert voltage technique

Code Freq. range (low) Freq. range (high) Higher operating temperature Higher operating temperature Calibration facility
-2673-W-007- 30 Hz 200000 Hz 80 °C 176 °F CIC
-2673-W-002- 30 Hz 200 kHz 60 °C 140 °F None
-2673-T-- 30 Hz 200 kHz 60 °C 140 °F None
-2683--- 250 Hz 10 kHz 60 °C 140 °F CIC
-2673--- 30 Hz 200 kHz 60 °C 140 °F None
-2673-W-001- 3 Hz 200 kHz 60 °C 140 °F None

Designed to allow calibration of ½" and 1" condenser microphones by the insert voltage technique, either in conjunction with the reciprocity method or with a known sound source. The insert calibration facility is used for reciprocity and insert voltage calibration of condenser microphones in accordance with IEC 1094 – 1: 1992 and ANSI S1.10.

  • Insert voltage calibration of condenser microphones for open-circuit voltage determination
  • Calibration of condenser microphones with respect to reciprocity calibration methods
  • General sound measurements in connection with Brüel & Kjær condenser microphones

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