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B&K measurement microphone sets + LAN-XI Microphones

B&K measurement microphone sets + LAN-XI: sensors and measurement devices by HBK for microphones.

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HBK Type 4138 microphone photograph from the official product datasheet

Shared technical specifications for the series

Properties every model in the series has. What differs is in the models table below.

Range across models

The span covered by the models of the series together — not the range of each model.

Range across the models of B&K measurement microphone sets + LAN-XI
Microphone diameter 0.125–0.5 inch
Frequency response 0.07–140000 Hz
Maximum SPL 110–184 dB SPL
ADC sampling rate 131072–524288 samples/s
Microphone sensitivity 0.08–1100 mV/Pa
Operating temperature -170–125 °C
Number of measurement channels 1–6
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Models in the series

One column per model: what differs between the models of the series.

Models of B&K measurement microphone sets + LAN-XI compared by parameter
Parameter 4138-A-015 4138-B-006 4138-C-006 4138-L-006 4188-A-021 4188-A-031 4188-B-001 4188-C-001 4188-L-001 4189-A-021 4189-B-001 4189-C-001 4189-H-041 4189-L-001 4189-W-003 4190-B-001 4190-C-001 4190-L-001 4191-B-001 4191-C-001 4191-L-001 4192-B-001 4192-C-001 4192-L-001 4193-B-004 4193-C-004 4193-L-004 4938-A-011 4938-B-002 4938-C-002 4938-L-002 4939-B-002 4939-C-002 4939-L-002 4941-A-011 4941-B-002 4941-C-002 4941-L-002 4942-A-021 4942-A-031 4942-B-001 4942-C-001 4942-H-041 4942-L-001 4943-B-001 4943-C-001 4943-L-001 4944-A 4944-B 4944-W-005 4944-W-007 4944-W-010 4954-A 4954-A-011 4954-B 4955 4966-A-041 4966-H-041 4966-L-001 4971-H-041 4988-A
Microphone diameter 0.125 inch 0.125 inch 0.125 inch 0.125 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.25 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.5 inch 0.25 inch
Frequency response 6.5–140000 Hz 6.5–140000 Hz 6.5–140000 Hz 6.5–140000 Hz 20–12500 Hz 8–12500 Hz 8–12500 Hz 8–12500 Hz 8–12500 Hz 20–20000 Hz 6.3–20000 Hz 6.3–20000 Hz 6.3–20000 Hz 6.3–20000 Hz 6.3–20000 Hz 3.15–20000 Hz 3.15–20000 Hz 3.15–20000 Hz 3.15–40000 Hz 3.15–40000 Hz 3.15–40000 Hz 3.15–20000 Hz 3.15–20000 Hz 3.15–20000 Hz 0.1–20000 Hz 0.07–20000 Hz 0.07–20000 Hz 4–70000 Hz 4–70000 Hz 4–70000 Hz 4–70000 Hz 4–100000 Hz 4–100000 Hz 4–100000 Hz 4–20000 Hz 4–20000 Hz 4–20000 Hz 4–20000 Hz 6.3–16000 Hz 6.3–16000 Hz 6.3–16000 Hz 6.3–16000 Hz 6.3–16000 Hz 6.3–16000 Hz 3.15–10000 Hz 3.15–10000 Hz 3.15–10000 Hz 16–70000 Hz 16–70000 Hz 16–70000 Hz 16–70000 Hz 16–70000 Hz 3–80000 Hz 3–80000 Hz 3–80000 Hz 10–16000 Hz 12.5–20000 Hz 6.3–20000 Hz 6.3–20000 Hz 10–20000 Hz 20–20000 Hz
Maximum SPL 168 dB SPL 168 dB SPL 168 dB SPL 168 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 148 dB SPL 148 dB SPL 148 dB SPL 162 dB SPL 162 dB SPL 162 dB SPL 162 dB SPL 162 dB SPL 162 dB SPL 148 dB SPL 148 dB SPL 148 dB SPL 172 dB SPL 172 dB SPL 172 dB SPL 172 dB SPL 164 dB SPL 164 dB SPL 164 dB SPL 184 dB SPL 184 dB SPL 184 dB SPL 184 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 146 dB SPL 148 dB SPL 148 dB SPL 148 dB SPL 169 dB SPL 169 dB SPL 169 dB SPL 169 dB SPL 169 dB SPL 164 dB SPL 164 dB SPL 164 dB SPL 110 dB SPL 144 dB SPL 144 dB SPL 144 dB SPL 146 dB SPL 146 dB SPL
ADC sampling rate 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 524288 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 524288 samples/s 131072 samples/s 524288 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 262144 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 131072 samples/s 524288 samples/s
Microphone sensitivity 0.56 mV/Pa 0.8 mV/Pa 0.8 mV/Pa 0.8 mV/Pa 31.6 mV/Pa 31.6 mV/Pa 31.6 mV/Pa 31.6 mV/Pa 31.6 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 12.5 mV/Pa 12.5 mV/Pa 12.5 mV/Pa 12.5 mV/Pa 12.5 mV/Pa 12.5 mV/Pa 2 mV/Pa 2 mV/Pa 2 mV/Pa 1.4 mV/Pa 1.4 mV/Pa 1.4 mV/Pa 1.4 mV/Pa 3.5 mV/Pa 3.5 mV/Pa 3.5 mV/Pa 0.08 mV/Pa 0.08 mV/Pa 0.09 mV/Pa 0.08 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 50 mV/Pa 0.9 mV/Pa 0.9 mV/Pa 0.9 mV/Pa 0.9 mV/Pa 0.9 mV/Pa 2.8 mV/Pa 2.8 mV/Pa 2.8 mV/Pa 1100 mV/Pa 48.4 mV/Pa 48.4 mV/Pa 48.4 mV/Pa 12 mV/Pa 11 mV/Pa
Interfaces Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet Ethernet
Acoustic standard IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration IEC 61094 measurement microphone; system class depends on selected set and analyzer configuration
Operating temperature -30–100 °C -20–100 °C -30–100 °C -30–100 °C -30–100 °C -30–100 °C -30–100 °C -30–100 °C -30–100 °C -20–80 °C -20–80 °C -20–80 °C -20–125 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–125 °C -20–80 °C -20–80 °C -20–80 °C -20–80 °C -20–100 °C -20–100 °C -170–100 °C -20–100 °C -20–100 °C -20–80 °C -20–80 °C -20–80 °C -20–100 °C -20–60 °C -20–125 °C -20–60 °C -20–125 °C -20–80 °C
Microphone polarization Externally polarized, 200 V Classical Externally polarized, 200 V Classical CCLD Prepolarized Prepolarized Prepolarized Classical CCLD Classical Prepolarized Prepolarized Classical Prepolarized CCLD Externally polarized, 200 V Externally polarized, 200 V Externally polarized, 200 V Classical Classical Classical Classical Classical Classical Classical Classical Externally polarized, 200 V Externally polarized, 200 V Externally polarized, 200 V Classical Classical Classical Externally polarized, 200 V Classical Externally polarized, 200 V Externally polarized, 200 V Classical CCLD Prepolarized Prepolarized Prepolarized CCLD Prepolarized Externally polarized, 200 V Classical Externally polarized, 200 V CCLD Prepolarized Prepolarized Prepolarized Prepolarized CCLD Prepolarized Prepolarized Classical Prepolarized CCLD Prepolarized Prepolarized Prepolarized TEDS
Number of measurement channels 4 4 4 2 3 1 4 6 4 4 2 4 4 2 3 4 6 2 4 4 4 4 4 4 4 4 4 4 4 6 4 6 1 4 2 4 4 3 6 4 6 6 4 3 4 3 6 1 1 3 3 4 4 6 6 1 6 6 4 4 6
Sound field Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Free field / outdoor Free field / outdoor Free field / outdoor Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Diffuse / reverberant field Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Pressure / coupler / confined space Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Free field / outdoor Pressure / coupler / confined space Pressure / coupler / confined space
Status Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active Active
Datasheet PDF — 4138-A-015 (opens in a new tab) PDF — 4138-B-006 (opens in a new tab) PDF — 4138-C-006 (opens in a new tab) PDF — 4138-L-006 (opens in a new tab) PDF — 4188-A-021 (opens in a new tab) PDF — 4188-A-031 (opens in a new tab) PDF — 4188-B-001 (opens in a new tab) PDF — 4188-C-001 (opens in a new tab) PDF — 4188-L-001 (opens in a new tab) PDF — 4955 (opens in a new tab)

The industries we serve

Frequently asked questions

Answers to the most common questions about our products and services

The manufacturer describes Type 4138 as a pressure-field microphone for high-level and very-high-frequency measurements, and for confined spaces. The document lists a 6.5 Hz to 140 kHz range.

Type 4138 is externally polarized and requires 200 V. The product data specifies a classical preamplifier such as Type 2670 together with adaptor UA-0160.

The product data says sensitivity can be calibrated at 250 Hz with Pistonphone Type 4228 or at 1 kHz with Sound Calibrator Type 4231. Adaptor DP-0774 is used in both cases.

The product data describes Type 4955-A as optimized for handheld analyzers Types 2250, 2260, and 2270. Retain the A suffix because it identifies a distinct version from Type 4955.

No. Type 4188 is prepolarized and requires no external polarization voltage; it can be used with CCLD or classical preamplifiers. Match the preamplifier to the measurement system.

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