Noise Limiters / Noise Pollution Control Systems

Lime Technologies (noiselimiters.co.uk) are specialists in the noise control field and our technical department will be pleased to offer you free advice on the appropriate type of noise / sound limiter unit for your particular venue.  We also supply industrial noise warning devices to assist employers in complying with health and safety at work regulations. 

Remember Lime Technologies only deal with noise systems - we offer the lowest prices with the highest level of service.  Please contact our sales department for a quotation on any noise control equipment.

Noise limiters, also known as environmental noise control systems, noise pollution control system or sound limiters, are now a prerequisite in many parts of the UK for the granting or renewal of an entertainment licence.

Most local authorities and environmental health officers require the installation of an electronic noise limiter in village halls, pubs, bars, clubs, restaurants, health clubs and other entertainment venues to minimise complaints regarding noise pollution. Many schools and colleges are also fitting a noise limiter in music department practice rooms in order to protect students from possible hearing damage.

As from April 2008 entertainment venues have to comply with The Control of Noise at Work Regulations to ensure that workers hearing is protected.

PLEASE NOTE: Recent legislation provides that as from 1 October 2006, local authorities are able to issue fixed penalty notices in the region of £500 to the person in charge of the premises at the time of any noise complaint. This could be the license holder, manager or any other employee.  This is in addition to their existing powers to serve noise abatement notices and review premises licenses.

Noise Limiter kits

Plug and Play Noise Limiter £518.00 GBP (including VAT)    Plug and play noise limiter.   Approved by many Environmental Health Departments.  No professional installation required.  Simple DIY fitting or use as a portable unit. Ideal for marquees.  Supplied complete with full instructions and locking socket cover to prevent bypassing.  More Info

DIY Noise Limiter Kit £512.00 GBP (including VAT)     DIY noise limiter kit.  Save over £100 by fitting your own sound limiter.  Full kit includes Lime SL2000 sound limiter (see below for details) with remote microphone and compact remote level indicator, isolating switch, metal 2 gang switched socket outlet, 5m 6mm twin & earth power cable, 50m microphone cable, 50m multicore cable for remote level indicator, sound pressure level meter and full instructions. (Always consult a competent electrician if you are unsure about electrical wiring. Typical cost £120+VAT)

Lime Technologies supply two distinct types of noise limiter.

1.  Sanction Noise Limiter (Electronic sound monitoring and mains power switching unit)
This type of noise limiter monitors sound levels within the venue using a built in or external microphone. If the preset sound pressure level, usually set by the local environmental health officer, is exceeded for a certain period of time (normally 10 seconds) the mains power is disconnected from the sound equipment for around 10 seconds and then automatically restored.  This type of sound limiter can be used in almost any situation but is the only viable solution when bands or mobile DJs bring their own equipment to your premises.  If you own or manage a pub, bar, village hall or other establishment where live music is played you can safeguard your licence and avoid the possibility of large fines by ensuring that musicians plug their equipment into a power socket controlled by a device of this type.  This type of sound limiter will usually need to be fitted by a professional installer as mains voltage connections are involved.  Lime Technologies supply and install several different models of limiter, some are shown below.

Lime SL2000 Noise Limiter     -     BEST SELLING SOUND LIMITER! Designed by installers for straightforward installation and maximum functionality this noise limiter has been fitted in thousands of venues throughout the UK, The SL2000 noise limiter offers all the features of more expensive systems and is local authority approved.  It features fully automatic operation, remote sound pickup microphone and optional remote level indicator.  Built in 30 Amp mains switching contactor and fire alarm interface.  Easily fitted by any competent electrician. In our opinion this unit offers the best value.  More Info Download SL2000 Installation Manual £399.00 GBP including VAT
Sentry Sound Limiter The Sentry works in conjunction with a relay or contactor (available separately £115.00 GBP including VAT) and usually controls mains power. But the Sentry is not limited to this function; any function that can be controlled by a relay or switch can be controlled by the Sentry. The Sentry has connectors provided to interface with a range of equipment, plus internally selectable options to make the system as versatile as possible. Although its main application is to control mains power outlets in entertainment venues it is not restricted to this application. Basically any function that can be controlled by a relay or switch can be controlled by the Sentry. These may include disconnecting loudspeakers, switching passive attenuators to reduce system volume or acting as the trigger into an active attenuator system. It is microphone driven and has its own microphone built in to minimise tampering. The Sentry also incorporates the facility to operate at two different sound level thresholds which may be selected manually, by a remote key switch or similar, or automatically by a time switch (switches not supplied). This allows a venue to operate at different levels at different periods of the day. e.g. when near offices or shops. An integral timer is available as a cost option.   More Info Download Sentry Instruction Manual £549.00 GBP including VAT

Castle GA904 Electronic Orange Noise Limiter The Castletech Electronic Orange Noise Controller is connected to the main power supply for the amplification equipment, the Electronic Orange flashes a warning when pre set sound levels are exceeded. If the operator doesn't turn down the sound within a pre-set time, an automatic cut off activates. The music never has to stop, because a warning light flashes if the limit is exceeded, and only when this is ignored does the power supply cut off to prevent further abuse.   More Info £660.00 GBP including VAT Download GA904 Instruction Manual

2.  Electronic sound level attenuation system
A unit which is connected between the mixer or sound source, a karaoke machine or CD player for example, and the main power amplifier.  The unit continually monitors the sound level and reduces the volume if a preset limit is exceeded.  This type of noise control system is only suitable if the sound system or at least the power amplifier is permanently installed in the venue.  The Formula Sound AVC2D featured below is the industry standard for this type of unit.
 

AVC2-D Noise Limiter (New digital version)  BEST SELLING AUTOMATIC VOLUME CONTROL! The AVC2-D performs as an intelligent volume control and in operation is very simple. If the average operating level is kept below the internally set threshold, the AVC2 has no effect. If the average programme level exceeds the threshold the unit will reduce its output level. The level is reduced in discreet steps indicated by the led. bar graph meter on the front panel of the unit. The action of the Formula Sound AVC2 is to fade between these steps and is almost undetectable in use. The more one tries to increase the volume, the more the AVC2 will decrease it so that the system will barely change in perceived level. If driven to maximum attenuation, the output level will be reduced by more than the increase in input level. The mixer or pre amp will probably be clipping, but the system will actually be at a lower than normal level. A clip indicator is provided to show when the input stage of the limiter is being over driven. Reducing the input level will gently release the attenuation provided by the AVVC.    More Info Download AVC2D Instruction Manual	AVC2D
	£545.00 GBP including VAT

Eagle G920A Sound Level Controller now discontinued - Please see Lime SL2000 for replacement product.
SPL2120 discontinued - Please see AVC2D for replacement product.