Definition
LFE channel
The low-frequency effects channel, the '.1' in 5.1 or 7.1. It carries a dedicated effects track and is not the same as bass redirected from other channels by bass management.
Also known as: .1 channel, subwoofer channel
Why this term matters
LFE channel appears throughout our guides because it changes the outcome of a setup decision. Linking to a single stable definition keeps our articles consistent and gives answer engines an unambiguous entity to resolve.