This is the second in my series of “mix tips” articles. You can read the first here.
Most mix engineers don’t hear the bottom octave (20-40 Hz) because their monitors can’t produce it. Unless your room is 300 square feet or larger, and professionally tuned, adding a subwoofer will probably do more harm than good. Whether or not you can hear it, it’s important to balance the sub bass with the rest of the mix. You want deep full tone from the bass and a healthy “chest thump” from the kick without blowing out any speakers.
A common DIY solution is to simply roll off the whole mix with a highpass filter (HPF, also known as a low cut or LC), but that’s ugly and imprecise. Even if the frequency and slope of the filter leave an appropriate amount of sub, the EQ will color the mix, usually in an undesirable way. Instead, we want to sculpt the low end on a track-by-track basis, balancing out the sub bass and shaping competing elements to produce a clear and powerful foundation for your mix.
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