Sound limiters…what you need to know!

If you’ve ever planned an event like a wedding or birthday party you know just how crucial music is to the atmosphere. But what if the venue you choose has restrictions on how loud that music can be? That’s where devices like sound limiters come in and understanding what they do is important for anyone planning an event.

What is a sound limiter?

A sound limiter is a device installed in a venue to monitor and control noise levels. Venues often use these devices to comply with local noise regulations or to avoid disturbing neighbours. Think of it as a referee for sound, ensuring the volume never gets too loud.

The device in the picture at the top of this blog post, the Formula Sound Sentry MK2, is a popular type of sound limiter commonly installed in venues. It keeps a constant watch on the noise levels, measuring the output for any sound systems in real time.

How does it work?

The device will either be connected directly to the venue’s audio system or it will monitor the sound from a DJ or band through its built-in microphone. As the volume increases, it measures the sound pressure and compares it to a pre-set limit. If the sound level approaches the limit, the device gives a warning, often with a visible light that changes from green to amber and then to red. If the volume continues to exceed the limit, the device can take further action like cutting the power until the sound level is reduced.

Some sound limiters are set up to gradually lower the threshold throughout the night. As the party goes on, your DJ or band will need to keep an eye on their volume to stay within the limits.

Why should you care?

If you’re planning a party, a wedding or any kind of event with music provided by a DJ or band, this device can have a direct impact on the experience.

If your DJ or band exceeds the pre-set limits, the power will be cut, music will stop suddenly and the lighting will go off until the system is reset. The reset button is often hidden in a cupboard or sometimes behind the bar. Some systems automatically reset after a minute or so.

For a DJ or band, this means that they will usually need to turn everything off so that when power is restored the risk of any potential damage to their equipment will be minimised. The whole process could take three or four minutes which doesn’t sound like a lot but it can be an instant party pooper!

How to work with a sound limiter

A sound limiter doesn’t necessarily have to spoil the fun. Good DJs and bands are used to working with these kinds of devices and can adapt their setup to stay within the limits. It helps to communicate with your entertainment in advance just to make them aware.

It’s important to know that any attempts to bypass the sound limiter by using a different plug socket for example could end your party prematurely. Check your venue’s terms and conditions to find out what their rules are. I have seen venue staff come to check to make sure I am plugged into a power socket controlled by the sound limiter to ensure I am not trying to cheat the system.

What’s the impact on your event?

The key takeaway is that sound limiters are there to ensure that everyone has a good time without pushing the limits on noise.

Sound limiters are triggered by volume levels rather than the type of music itself, but certain styles of music are more likely to lead to higher volume spikes that could trigger the sound limiter.

Dance music often features heavy bass which is particularly powerful and can push the sound levels past the limit. Bass frequencies carry a lot of energy and are picked up strongly by sound limiters so if your playlist features a lot of house music, drum & bass or even R&B, you could find that your DJ will need to keep volume levels much lower than normal.

Live bands can be more challenging to control compared to a DJ because of the natural variation in dynamics during a performance. Drum kits, bass guitars and even vocals can generate sudden spikes in volume that can trigger a sound limiter.

It’s not just the music either. Popular sing-along anthems that encourage the crowd to join in, cheer or clap can lead to unexpected peaks in overall noise. Crowd participation can be difficult to predict or control and can often lead to the sound limiter being triggered. A classic example of this is when the crowd sing along to songs like “Sweet Caroline” or “Wonderwall” – that always makes me anxious!

Wrap up

It is possible to have a great party while staying within the venue’s sound limits. You don’t NEED loud music to have a great atmosphere although I do understand it helps.

Make sure to find out if a venue has a sound limiter or not before you book as that could influence your decision. If you have already booked and then subsequently find out that they have one, make sure you communicate that information to your entertainment.

Some DJs and bands hate them with a passion and will refuse to work at a venue with a sound limiter installed so whilst doing your research, check they are happy to work at your venue.

If your venue has a sound limiter, you’ll be pleased to know that I have no problems working at a venue with one installed so if you haven’t booked a DJ yet, fill in my short contact form, email me directly or call me on 07799 782764.

Speak soon!