Skip to content
soundlevelmeter.review

Bedrock · Bedrock Audio · Noise monitoring station

Bedrock SB41 SoundBox

Current

USB-powered sound level meter and noise data logger without display or battery, designed for permanent and semi-permanent installation under external power. Class 1 (SB41) or Class 2 (SB42) measurement with a 1/2-inch XLR microphone, real-time octave analysis, FFT, STIPA, RT60 and calibrated audio recording, controlled from a host computer through a Python API or remote display application.

Specifications verified on .

Type
Noise monitoring station
Class
Class 1
Octave bands
1/1 and 1/3
Connectivity
USB
Compare with other instrumentsAll noise monitoring stations

Specifications

As published by Bedrock. Fields the manufacturer does not publish are omitted rather than estimated.

Standards and class — Bedrock SB41 SoundBox
SpecificationValue
IEC 61672-1 classClass 1
StandardsIEC 61672-1:2013 class 1 (SB41) or class 2 (SB42), ANSI S1.4-2014 type 1 (SB41) or type 2 (SB42), IEC 60268-16:2020 (rev. 5) and IEC 60268-16:2011 (rev. 4), IEC 61260-1:2014
Measurement — Bedrock SB41 SoundBox
SpecificationValue
Measurement range30 to 128 dB (SB41) or 30 to 122 dB (SB42) with the included microphone
Linearity range> 110 dB (electronics)
Frequency weightingsA, C, Z
Time weightingsF, S, I
ParametersSPL, Leq, Lmax, Lpeak, LN statistics, STI, RT60, SRI/STC
Analysis — Bedrock SB41 SoundBox
SpecificationValue
Octave bands1/1 and 1/3
Octave band filter classexceeds class 1 (IEC 61260-1:2014); 1/6 and 1/12 octave also available
FFTFFT module (line count not published)
Reverberation timeYes
Building acousticsYes
Speech intelligibilitySTIPA and Full STI
Audio recordingYes
Logging and data — Bedrock SB41 SoundBox
SpecificationValue
Memory16 GB internal flash (15.8 GB for data)
Hardware — Bedrock SB41 SoundBox
SpecificationValue
Microphone1/2" prepolarised class 1 (SB41) or class 2 (SB42), XLR 48 V phantom; 3 m XLR extension cable included
Detachable preamplifierYes
Displaynone
Batterynone (USB powered)
External powerUSB (data, power, remote control)
Connectivity and software — Bedrock SB41 SoundBox
SpecificationValue
ConnectivityUSB
Remote controlPython API (Remote Protocol Tool), Remote Display app for Windows, USB audio streaming
SoftwareBedrock Studio, Bedrock Elite Analyzer

Variants

Variants of the Bedrock SB41 SoundBox as the manufacturer names them
VariantDifference
SB41IEC 61672-1:2013 class 1, ANSI S1.4-2014 type 1; 1/2" class 1 prepolarised microphone; measuring range 30 to 128 dB
SB42IEC 61672-1:2013 class 2, ANSI S1.4-2014 type 2; 1/2" class 2 microphone; measuring range 30 to 122 dB

Where this data comes from

Manufacturer documents used for this record
KindDocumentAccessed
Product pageBedrock SB41/SB42 SoundBox
DatasheetBedrock SBxx datasheet, August 2026

Verified on . Only the manufacturer’s own published material is used; distributor pages are not sources.

Spec out of date? Tell us (reference bedrock-soundbox-sb41).

Verified owner reviews

Reviews from people who own and use this instrument, each checked against a serial number by a person.

Opens in November 2026. Own this instrument? Register your interest.

Known issues and firmware notes

Hardware and firmware problems reported by owners, with the firmware version concerned and any manufacturer response.

Opens in November 2026. Own this instrument? Register your interest.

Feature requests

Functions owners would like to see in a firmware update or a successor model.

Opens in November 2026. Own this instrument? Register your interest.

Read next

More from Bedrock

Other class 1 noise monitoring stations