I have a set of light beam PPM meters in a Neumann SP66 mastering console. I had another set in previous MT66 which is almost the same as an SP66. I could never get them calibrated where I trusted them.
I recently discovered a Neumann factory calibration procedure for the PTMV amplifiers. I also found a calibration procedure for the meter unit. I’m having someone restore them. The PTMV has nuvistors and that is out of my wheelhouse.
I can’t wait to see a properly calibrated light beam meter. I’ve never seen one before. I don’t imagine anyone under say 60 years old has ever seen a properly calibrated one.
I recently discovered a Neumann factory calibration procedure for the PTMV amplifiers. I also found a calibration procedure for the meter unit. I’m having someone restore them. The PTMV has nuvistors and that is out of my wheelhouse.
I can’t wait to see a properly calibrated light beam meter. I’ve never seen one before. I don’t imagine anyone under say 60 years old has ever seen a properly calibrated one.