Chapter 8 —
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" Microphone Preamplifier Type 2669
Introduction
Falcon™ Range of Microphone Products
Microphone Handbook
Brüel & Kjær
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8.1 Introduction
8.1.1 Description
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" Microphone Preamplifier Type 2669 is a general-purpose microphone preampli-
fier which includes the following features:
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Built-in calibration facility for testing the complete measurement set-up
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Thin and flexible cable with wide, working temperature range
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High output current capability
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Works with both dual and single power supplies
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Fulfils electromagnetic compatibility (EMC) requirements EN50081–1 and
prEN50081–2
The preamplifier is available in two versions, the 2669L and the 2669B. The only
difference is the connector at the instrument end for the preamplifier socket. The
2669L is supplied with a detachable cable with a LEMO connector. The 2669B is
supplied with a detachable cable with a Brüel&Kjær connector. The preamplifier
can be stored in the supplied case with a microphone mounted when not in use.
Fig.8.1
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" Microphone Preamplifier Type 2669B and 2669L
shown with LEMO to 7-pin Brüel&Kjær Adaptor
ZG0350 (not included)
2669 L2669 B
ZG0350
(not included)
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