2669-L - ½-inch microphone preamplifier, tapered, incl. cable, 7-pin LEMO connectorThis ½" Falcon Range microphone preamplifier operates over a wide range of temperature, humidity and other environmental conditions. Connector: lemo 0B 7 pin & lemo oB to lemo 1B

UsesSound measurements with Brüel & Kjær 1/2" (1", 1/4" and 1/8" with adaptor) and compatible microphonesGeneral-purpose preamplifier and high-impedance input probe for Brüel & Kjær measuring instruments

FeaturesFull electromagnetic compatibility (EMC)Detachable, thin cable for easy installationCompact LEMO connector at preamplifierPatented charge-injection calibration technique for on-site calibration of the whole measuring channel including the microphoneWide dynamic rangeVery low inherent noise, high input impedanceLow output impedance and high output current allows use with long extension cablesWide working temperature rangeFalcon™ Range product with a three-year guaranteeThe preamplifier has a very high input impedance presenting virtually no load to the microphone. The high output voltage together with an extremely low inherent noise level gives a wide dynamic range.½" Microphone Preamplifier Type 2669 is a Falcon Range product for making precision acoustic measurements with Brüel & Kjær’s wide range of condenser microphones. You can connect½" microphones directly and 1", ¼" and 1/8" types using adaptors.

The preamplifier, cable and its connectors all fulfil EMC requirements.

You can verify the condition of the microphone, preamplifier and cable on-site using its patented charge injection calibration technique.

The preamplifier’s low output impedance allows the use of long extension cables without problems.