Dorrough 40-A Loudness Monitors

Demonstration of the Dorrough 40-A Loudness Monitors connected to a +4dBu balanced source -- Alesis Masterlink ML-9600 (out of camera view). There is a Normal Persistence range and Normal Peak range. The video indicates that the normal Persistence levels for both left and right channels are too high. They should read about "0" on the Persistence scale. The normal Peak range is O.K.. though. Sorry, no sound to accompany this video.