A dense modern rock master typically targets RMS around -10 to -9 dBFS to retain transient headroom

For a modern rock track with a full, dense arrangement, a target RMS of roughly -10 to -9 dBFS leaves enough headroom for kick and snare transients to pass through the limiter without heavy gain reduction. This is a rough heuristic, not a fixed rule, and will shift with the density of the arrangement and the desired loudness. A sparser arrangement may be comfortable at -12 dBFS RMS; a hyper-compressed genre like heavily limited metal may target -8 dBFS or louder. The RMS target frames how aggressively the limiter needs to work: if the incoming level is -18 RMS and the target is -10, the limiter needs to supply approximately 8 dB of gain reduction — moderate for a well-structured mix.

Examples

Receive a rock mix at -18 RMS. Instantiate a limiter, pull the threshold down until RMS reaches approximately -10. If the limiter needs more than ~10 dB of gain reduction to reach that level, the mix may be too dynamic or too quiet — consider feeding back to the mixer.

Assessment

A student targets -6 dBFS RMS on a rock master. What are the likely consequences for the kick/snare transients and the limiter? What would you suggest instead?