Sound Limiters: What You Need To Know And A Decibel (dB) Loudness Comparison Chart

Sound Limiters: What You Need To Know And A Decibel (dB) Loudness Comparison Chart

A Guide To Loudness & Venue dB Limiters!

More and more venues are fitting (or are being forced to fit) sound limiters in a bid to appease local council noise restrictions. Whilst this can be good news for local residents living near the venue, it can wreak havoc on a live bands performance.

What Are Equivalent Loudness Comparisons?

To demonstrate the equivalent loudness (or dB level) or common environmental noises and unamplified musical instruments, we have compiled a comparison chart.

Just want the bands? Check out our Sound Limiter Friendly Party Band Collection!

Decibel Comparison Chart

What Is A Sound Limiter?

Sound limiters use a special microphone fitted inside a performance venue or function room to measure the loudness of music. The individual unit of measurement for ‘loudness’ is called a decibel or dB.

If the music exceeds a pre-defined ‘loudness’ (or dB level) for more than a pre-defined time (usually around 5-10 seconds), the limiter circuitry cuts the electricity supply to the musical equipment. It then takes a minute or so for the electricity to come back on again. Often, if the limiter is activated more than 2-3 times in any 1 hour period, the electricity supply will be cut off for 15-60 minutes or more!!

Usually some sort of traffic light system is visible to help the artists or DJ to see when the music is approaching the limiters maximum permitted volume.

Why Are Sound Limiters A Potential Problem?

The problem commonly faced by musicians is the huge difference between how limiters are set up venue to venue. It’s possible to perform in one part of a room and not set the limiter off, but regularly trip the limiter if playing in a different location in the same room. Depending on where the microphone is located, it’s also possible to set the limiter off by clapping too!!

This means that from venue to venue, depending on where in the room the microphone is located, where the band are positioned relative to the microphone, and how the acoustics of the room reflect the sound into the microphone, the same band playing at the same level through the same equipment might not be able to play with a limiter set at the same level as the previous venue.

For this reason, many bands now insist that the client takes responsibility for disruption to the performance caused by sound limiters fitted in a venue as it can be impossible to guarantee that the band will be able to play within the limiters threshold for the reasons stated above.

Shine On Limiter

What Level Will Cause A Problem If My Venue Has A dB Limiter Fitted?

Any venue with a sound limiter set lower than approx 90dB is definitely going to cause a problem for all but the quietest forms of music such as harp or classical guitar.

90dB - 95dB is problematic but in most instances would be ok for string quartets & jazz trios.

95dB is a very common setting and is likely to cause a problem for a lively rock and pop band. You’ll see from the comparison chart above that 95dB is equivalent to listening to music on a walkman at 50% volume level, or listening up close to an unamplified Obo or Flute. As you can imagine, that’s not very loud! Many bands have performed within this limit, but have reported detrimental effects on their performance, with occasional or frequent tripping of the limiter.

95dB – 100dB will usually be workable with little detriment to the sound of the performance, although the band might need to use brushes rather than drum sticks, and you might find that the music seems a little ‘tame’ and unenergetic.

Anything over 100dB should be fine as in our experience; most limiters are set between 92dB – 98dB. We believe the average volume level of most rock and pop function bands playing in a room with 150 capacity, with normal energy & enthusiasm is approx 110dB, with occasional volume peaks around 120dB.

Most styles of jazz or classical music will NOT suffer from the same problems as a rock and pop band because of the way the music is played and the equipment/instruments used.

We recommend that if live music is an important part of your evening, you book a venue without a sound limiter, or else check in advance what the venues policy is in case of interruption to the performance.

Why Can The Band Not Just Turn The Volume Down?

The unamplified sound of the drum kit is what the rest of the band will set their equipment to. The unamplified drum kit can’t be turned down, and tapping the drums softly to get a quieter sound wouldn’t suit rock and pop music. It would sound rubbish and completely compromise the bands performance.

As such, the band are totally at the mercy of how ‘loud’ the unamplified sound of the drummer sounds in any given room. If the room has stone walls, the sound will reflect strongly and make the perceived loudness even louder. If the room is very ‘dead’ sounding with lots of curtains and thick carpet, the same drummer will sound much quieter as much of the sound will be absorbed.

It’s important to understand that the ability of the band to ‘turn down’ or play subjectively quietly is very much determined by the room acoustics and how the sound bounces off or is absorbed by the various surfaces.

If a sound limiter is fitted, it can sometimes be the case that the drum kit trips it out before the rest of the band even plugs in and in such cases there is very little that can be done to remedy the problem other than increase the threshold of the sound limiter or switch it off.

Once the drummer has set up and starts to play, the band will set the volume of all other instruments to be heard over the top of the drums. No function band wants to play too loud for their audience or annoy the venue staff. They will always endeavour to play to your requirements but there are limits to how quiet any rock and pop band can play.

Sound limiter pillows

What Can I Do If There Are Problems On The Night?

Although it’s probably not legal to do so, if there are problems on the night many venues, once they have seen that the band have done all they can to play as quietly as possible, will increase the limiters threshold level so it doesn’t trip the power if it starts to cause a problem, or else they’ll switch the limiter off altogether (or do what these clients did and tape pillows around the microphone / sensor!!!! disclaimer: not advised).

The best bet is to speak with your venue before hand and get the phone numbers of previous clients who’ve booked live entertainment at the venue before (particularly rock and pop bands), and get feedback from them. Do your home work, and compare the previous bands that other clients have booked with the sorts of bands you are considering. Also ask your Alive Network agent as we have probably provided entertainment before to your venue and we can check our records and contact other bands to see how they got on.

Some unscrupulous venues will tell you they've not had problems before knowing full well that the limiter is a major hindrance to a great party.

Here are some party bands who ARE sound limiter friendly...

  • Happy Hour Function Band Kent

    Happy Hour

    5 stars - Happy Hour are Highly Recommended 462 Rock & Pop Function Bands Kent

    Let you & your guests be blown away by one of the most in-demand bands in the UK! With 300+ reviews, a setlist full of the best music around & a wealth of industry experience, Happy Hour have entertained some of the world's biggest names (Pinewood Studios, Microsoft, ITV & more) & are no strangers to jam-packed dance floor’s & demands for encores!
    Price from £1,644

  • The Hot Shots Function Band Essex

    The Hot Shots

    5 stars - The Hot Shots are Highly Recommended 379 Rock & Pop Function Bands Essex

    Four time winners of The Wedding Industry Awards! The Hot Shots, are an multi award winning modern rock & pop party band. Their repertoire covers Bruno Mars, Ed Sheeran & Maroon 5 through to rock & indie classics by Foo Fighters, Killers & Kings Of Leon. Members have played at V Festival, BugJam, London Astoria & the O2 arena. Over 350+ positive reviews.
    Price from £1,533

  • Party Starters Function Band East Sussex

    Party Starters

    5 stars - Party Starters are Highly Recommended 142 Rock & Pop Function Bands East Sussex

    Party Starters are a cool & contemporary pop & rock band that know what a great party is all about! Energetic & exciting, Party Starters live sets are guaranteed to fill your dance floor & include music from Bruno Mars, Rudimental, The Beatles, Arctic Monkeys, Michael Jackson, Stevie Wonder & much more!
    Price from £1,517

  • The Rips Function Band Bedfordshire

    The Rips

    5 stars - The Rips are Highly Recommended 278 Rock & Pop Function Bands Bedfordshire

    Bringing fun, energy and a killer repertoire to every event, The Rips are experts at filling dance floors across the UK. Performing well known rock and pop from the 50's to present day, expect to hear music from Oasis, Kings Of Leon, Elvis, Arctic Monkeys and even a few fun surprises from the likes of Justin Bieber, One Direction and Girls Aloud!
    Price from £1,377

  • The Fanatics Function Band Staffordshire

    The Fanatics

    5 stars - The Fanatics are Highly Recommended 101 Rock & Pop Function Bands Staffordshire

    WINNERS at the UK Wedding Industry Awards! They've slayed at UK festivals, scooped awards - and even won praise from music legends, Radiohead! The Fanatics are a party powerhouse, known UK-wide for their roof-raising live performances. Expect up-to-date chart material, rock & indie anthems, plus retro classics... with killer male & female vocals.
    Price from £1,664

  • Shine On Function Band East Sussex

    Shine On

    5 stars - Shine On are Highly Recommended 239 Rock & Pop Function Bands East Sussex

    If you're looking for a professional, fun & energetic party band, then look no further! Shine On will have your guests jumping up & down & singing along to their exciting live sets which includes the very best indie, rock & pop classics from diverse artists such as Oasis, The Killers, Taylor Swift, Bruno Mars, Foo Fighters & many more. With a wide repertoire & over 8 years playing with this line up they have the experience & on-stage chemistry to make your evening truly memorable.
    Price from £1,544

Photos by: iStock/cyano66