The tent in the middle of the crowd

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Why festivals put a tent in the middle of the crowd: it's front of house, where the engineer mixes, hears what you hear and watches the level limit – about 50 m from the stage at Hyde Park – while the DJ listens to the booth monitors.

The DJ hears the booth. The tent hears what you hear.

Facts

  • The tent or covered riser out in the crowd is front of house (FOH): the WHO defines it as “the location at a venue or event from which the sound engineer mixes a performance”. The lighting desk can be run from the FOH position too.
  • It sits in the audience so the engineer hears what the crowd hears. Beside the stage, monitors and stage noise colour the sound, bass spills round the PA in every direction while the main hangs aim their highs out front. Engineers still walk the field, because a raised FOH riser isn't every spot.
  • The FOH position usually sits near the middle of the crowd, on the centre line between the PA hangs. At London's Hyde Park in 2013 it was 165 feet (about 50 m) from the stage. In the WHO's festival example it is 50 m from the front row, and the WHO accepts FOH as the measuring point without correction if it lies in the central third of the core audience area and within 70 m of the front row.
  • Volume limits are often policed at FOH: the WHO's 2022 standard sets 100 dB LAeq averaged over 15 minutes, and Sound On Sound (2012) put festival levels at usually around 98 dBA over 15 minutes, watched at the mixing desk and at nearby homes. At Hyde Park in 2016, shows reached up to 100–103 dB(A) at FOH while meeting off-site limits; in 2013 the off-site maximum was 75 dB(A).
  • The WHO says the level should be clearly visible at the FOH desk but generally not shown to the audience, because at some sporting events crowds compete to register the highest level.
  • The DJ hears a different feed: mixers such as Pioneer DJ's DJM-A9 have a separate booth output with its own 2-band booth EQ, and Pioneer's Stagehand app lets the FOH team watch the DJ's level meters without entering the booth. And the tent can cast a sound shadow: at the Prodigy's 2010 National Bowl show, FOH engineer Jon Burton said there were speakers behind the tent too, “because obviously this tent is shielding the main PA”.

Sources

  1. WHO global standard for safe listening venues and events (2 March 2022) · WHO checked 8 October 2026
  2. Wikipedia: Sound reinforcement system · Wikipedia checked 8 October 2026
  3. ProSoundWeb: Finding the sweet spot – making the best of mixing console placement issues (Andy Coules, 10 June 2026) · ProSoundWeb checked 8 October 2026
  4. Sound On Sound: Jon Burton – Outdoor sounds, engineering sound for festival events (March 2012) · Sound On Sound checked 8 October 2026
  5. Sound On Sound: Jon Burton – Mixing & recording the Prodigy live (Sam Inglis, October 2010) · Sound On Sound checked 8 October 2026
  6. Sound On Sound: The Isle of Wight Festival sound (Daniel James, December 2004) · Sound On Sound checked 8 October 2026
  7. Wikipedia: Front of house · Wikipedia checked 8 October 2026
  8. Wikipedia: Live sound mixing · Wikipedia checked 8 October 2026
  9. Wikipedia: Lighting control console · Wikipedia checked 8 October 2026
  10. d&b audiotechnik: TI 385 – d&b Line array design 10.10 · d&b audiotechnik checked 8 October 2026
  11. Meyer Sound: Line Arrays – Theory, Fact and Myth (technical report, 2002) · Meyer Sound checked 8 October 2026
  12. ProSoundWeb: Capital Sound conquers London's Hyde Park with Martin Audio MLA (18 July 2013) · ProSoundWeb checked 8 October 2026
  13. ProSoundWeb: Martin Audio covers British Summer Time Hyde Park festival (27 July 2016) · ProSoundWeb checked 8 October 2026
  14. ProSoundWeb: Live event sound levels – rising above the “insidious undercurrent of aural incapacitance” (Adam Hill, 2022) · ProSoundWeb checked 8 October 2026
  15. Pioneer DJ: DJM-A9 4-channel professional DJ mixer (product page) · Pioneer DJ checked 8 October 2026
  16. Wikipedia: Audio engineer · Wikipedia checked 8 October 2026

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Script

What's that tent in the middle of the crowd? It's front of house: where the show's sound is mixed. It's out here so the engineer hears what you hear. Beside the stage, it sounds like this. Out here, like this. So it sits on the centre line, out in the crowd: at London's Hyde Park, about 50 metres from the stage. And that tent polices the volume: often about 100 dB over 15 minutes, metered right there. The DJ hears something else: booth monitors, on a separate feed. The DJ hears the booth. The tent hears what you hear.

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Sources last checked 8 October 2026.