5.1

noun

A six-channel surround sound audio system, having five full-bandwidth channels and one low-frequency effects channel.

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Meanings

noun5.1 (uncountable)
  1. attributiveuncountableA six-channel surround sound audio system, having five full-bandwidth channels and one low-frequency effects channel.

    Unless you have the space to set up a mini IMAX in your living room, your best bet is to get a decent 2.1 or 5.1 speaker set.

    2006, Ben Hardwidge, Building Extreme PCs: The Complete Guide to Computer Modding
Cite this entry
APA

5.1. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/5.1

MLA

“5.1.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/5.1. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “5.1,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/5.1.

Source: 5.1 on Wiktionary, CC BY-SA 4.0.