Bedrock BACx acoustic calibrators

Our latest Bedrock BAC3 (class 1) and BAC4 (class 2) acoustic calibrators are now available! Similar to our trustworthy BAC1 and BAC2, the BAC3 and BAC4 are used to accurately verify (and if neccesary adjust) the level calibration of your Bedrock acoustic measuring instruments.

We recommend the BAC1/BAC3 for the Bedrock AM100 SM90 or SB41 class 1 instruments. The BAC2/BAC4, which comply with class 2, is great for the Bedrock SM50 or SB42. Each calibrator comes with an individual calibration certificate.