Total posts : 45366
Most likely right, marosborne, it reminds me of an experience that stations could learn from.
In the 1960s I was brought in by a station to solve a distortion problem with commercials played from a tape cartridge machine. The fix was simple enough involving a resistor matching bridge to correct a mismatch, but because the repair was made while the station was on the air with a morning show in progress, I inadvertantly got one channel of a turntable flipped in polarity before heading home.
The exact problem we’re talking about began happening everytime a stereo cut was played on that turntable, but it was undetectable at the station because the DJ heard everything in stereo and had no way to monitor the L+R mix.
Calls began coming in from listeners who noticed that vocals were missing from every other song, and I got a phone call.
The bottom line is, all stereo stations should have the means of monitoring the mix being heard by mono listeners.