Low-Frequency Extension
The lowest bass frequency a loudspeaker reaches at a stated response level, measured in hertz (Hz).
A rating of 32 Hz (−6 dB) means output at 32 Hz is 6 decibels below the reference level. It is a response limit, not an abrupt stop: quieter output can continue below it.
Low-Frequency Extension — Loudspeaker
With matching conditions, a lower figure indicates deeper bass reach. Compare the same dB drop or tolerance, measurement environment and speaker settings. Anechoic measurements exclude room reflections; in-room figures include room effects. Port configuration can also change the quoted limit.
Extension alone does not tell you how loudly or cleanly bass plays. Check maximum output and distortion measurements too. Your room and speaker placement can reinforce some bass frequencies and cancel others. Port-tuning and crossover frequencies describe different things; neither substitutes for the speaker’s measured bass extension.
Sources
- Reference 1 Meta specifications — KEF
- 8050B system specifications — Genelec
- Improving room acoustics — Genelec