problem
Why does sub bass disappear on small speakers?
Pure sub energy can be loud on meters while producing little audible pitch on smaller playback systems.
Cause
Small speakers cannot reproduce the fundamental
A sub-heavy bass can consume headroom below the range where laptops, phones, and small monitors reproduce clearly.
The meter may show plenty of low-end energy while listeners hear less bass note definition than expected.
Check
Compare sub level with audible harmonics
High-pass monitoring or check on small speakers, then watch how much headroom the sub range uses on the bass and mix bus.
If the low end is loud but the line vanishes, the bass needs harmonic information above the fundamental.
Fix
Add harmonics without overdriving the sub
Use gentle saturation, layering, or EQ to create audible upper harmonics, then trim sub level so the mix bus regains headroom.
Meter Core helps balance perceived bass against peak and loudness changes as harmonics are added.