Earthworks M30 - Measurement Microphone

I borrowed one to measure. It's 7.25mm outside diameter of the tip. SPL calibrator adapter needed depends on the manufacturer of your calibrator.

Please contact Earthworks directly for a reference to a certified technician or Earthworks distributor locally:DISTRIBUTOR:Acoustics & Engineering11 Changi North Street 1#02-01, Aerospace Training Center Changi North Industrial EstateSingapore 498823Tel: +65 62140146 / 7Fax: +65 62141606Email: sales@ane.com.sgWebsite: http://www.ane.com.sg/main.html