Sublow

Sublow is a term used in audio production and acoustics to describe ultra-low-frequency content that sits at the very bottom end of the audible spectrum. It typically refers to frequencies at or below the lower edge of sub-bass, often below 40 Hz, and in some descriptions to energy that may be perceived more as vibration than as distinct pitch. The concept is closely related to sub-bass and low-frequency sound, but sublimow emphasizes the extreme end of the spectrum.

The word is an informal compound of sub- and low and lacks a single standardized definition across sources. It appears in music production discussions, gear reviews, and hobbyist glossaries to convey how certain bass components behave in large venues or with specialized equipment.

In practice, managing sublimow involves subwoofers and bass-management systems, careful phase alignment and crossover settings, and attention to room acoustics. Because human hearing is less sensitive at very low frequencies, engineers rely on dedicated measurement tools and calibrated listening environments to assess sublimow content. Reproduction can vary with playback system and room modes, sometimes yielding strong tactile sensations without a clearly audible pitch.

Sublow is most commonly encountered in genres that emphasize bass energy, such as certain forms of electronic dance music, techno, or bass-heavy hip-hop, as well as in cinematic sound design where deep rumble is used for atmosphere.

See also: sub-bass, subwoofer, low-frequency sound, bass management.