There is a huge inconsistency in mastering between tracks and artists these days, such that often one track will sound a little weak on bass whereas another similar track or artist will have wildly excessive bass levels.
If a system is set up to sound correct on the excessive bass tracks, then the other music will often sound very weak. Again, if the system is set up to sound right on the weaker tracks then the heavier ones will be drowned in excessive bass. Of course an engineer can attend for the duration of the event and keep adjusting the system as required between tracks and artists, but this is not always viable. Finally an automated solution - if the system is set to sound good on balanced tracks if BASSWATCH is installed then it will automatically engineer the system's bass level so that all tracks, heavy or light, sound just right and excessive bass is avoided.
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