Bedrock BACx acoustic calibrators

The Bedrock BAC1 and BAC2 acoustic calibrators are used to accurately verify (and if neccesary adjust) the level calibration of your Bedrock acoustic measuring instruments. We recommend the BAC1 for the Bedrock SM90 class 1 instrument, and the BAC2 (which complies with class 2) for the Bedrock SM30 and SM90. Each calibrator comes with an individual calibration certificate.