The Dorrough 12-B Analog Loudness Meter with Percent Modulation is a dual version of the single-channel Dorrough 10-B loudness monitor that measures Relative Loudness to Peak Modulation. The meters are calibrated in percent modulation, referenced at 100%. They have a lower scale in dB from -36 to +3dB, for accurate peak protection at transmission sites.
The mechanism provides access phase correlation, peak hold, sum/diff, and reference mode allowing 0 reference setting to .1dB accuracy, directly or with the optional remote control. Rack mounting is required.
12-B Loudness Meter w/Percent Modulation