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Preamplifier Type 2669-C-001

Preamplifier Type 2669-C-001

FAMILY 2669

½-INCH MICROPHONE PREAMPLIFIER, TAPERED, INCL. CABLE, 7-PIN LEMO CONNECTOR

This ½" microphone preamplifier operates over a wide range of temperature, humidity and other environmental conditions.

FAMILY 2669

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This ½" microphone preamplifier operates over a wide range of temperature, humidity and other environmental conditions.

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

Code	Minimum Temperature [°C]	Maximum Temperature [°C]	Minimum Temperature [°F]	Maximum Temperature [°F]
-2669--001-	-20 °C	60 °C	-4 °F	140 °F
-2669-B--	-20 °C	60 °C	-4 °F	140 °F
-2669-C-002-	-60 °C	150 °C	-76 °F	302 °F
-2669-C--	-20 °C	60 °C	-4 °F	140 °F
-2669-L--	-20 °C	60 °C	-4 °F	140 °F
-2669-L-A-	-20 °C	60 °C	-4 °F	140 °F
-2669-T--	-20 °C	60 °C	-4 °F	140 °F
-2669-W-002-	-20 °C	60 °C	-4 °F	140 °F
-2669-W-004-	-20 °C	60 °C	-4 °F	140 °F

FAMILY 2669
Polarization	Classical
Lower frequency [Hz]	3 Hz
Higher frequency [Hz]	200 kHz
Diameter	1/2 inch
Minimum Temperature [°C]	-20 °C, -60 °C
Maximum Temperature [°C]	60 °C, 150 °C
Minimum Temperature [°F]	-4 °F, -76 °F
Maximum Temperature [°F]	140 °F, 302 °F
Connector	Lemo 7-pin
Calibration facility	CIC

List of accessories available for all variants of this family

Product Code	Description
DB-0375---	Adaptor 1" Mic to 1/2" Preamp, tapered
UA-0196---	Flexible Extension Rod *
DP-0901---	Adaptor 1/2" cyl. POM for 2669/2673
JJ-2617---	Input Adaptor 1/2" Mic to 10-32 UNF(F)
UA-1317---	Mic Holder use with 1/2" Preamp & Tripod
UA-0035---	"Microphone Adaptor for 1/4"" microphone
AO-0428-D-030-	Cable Mic, LEMO-0B 7-p(F) to B&K(M), 3m
UA-0036---	"Microphone Adaptor for 1/8"" microphone
ZG-0350---	Adaptor B&K 7-p (M) to LEMO-1B 7-p (F)
AO-0419-D-030-	0,01e Mic,LEMO-1B 7-p (M) to 0B (F), 3m

Features

Compact LEMO connector at preamplifier: LEMO 0B 7-pin.
Full electromagnetic compatibility (EMC)
Very low inherent noise, high input impedance
Low output impedance and high output current allows use with long extension cables

The 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. You can connect ½" 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 low output impedance and high output current capability means that you can use long cables between the preamplifier and your measuring instrument without loss of signal quality.

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