Public Address and Voice Alarm Services

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DSP Systems

At the heart of our Digital Signal Processor (or DSP) systems is QSC Audio's DSP 322ua or RAVE 722az DSPs programmed with our own configuration. Both types of DSP unit may be pre-configured (i.e. set on commissioning) or adjusted at any time using QSControl.net. This is QSC Audio's name for their software interface. By connection to a 10Mb Ethernet network the units may be controlled via a PC running Venue Manager or a group of PC's when the 'venue' is run on a server.

Our standard configuration provides the following features:

l One high priority input which may be zoned at installation or from our graphical user interface
l Four inputs with cascaded priorities which are zoned by hardwired connection for paging microphones
l Three background music inputs which may be zoned at installation or from our graphical user interface
l All inputs are MIC/LINE with adjustable input gain (322ua only, 722ua inputs are LINE level)
l All inputs have an adjustable soft knee compressor
l All inputs have a five band graphic equaliser
l Zonal level controls are available for all input types Emergency, Priority and Backgound Music
l Each of the eight outputs have a 100Hz high pass filter which may be byassed if required
l Each output has a Master Gain control
l Extensive real time signal level metering is provided.

We can provide customised configurations tailored to suit your requirements.

Amplification is provided by QSC Audio's CX range of multi-channel power amplifiers in the following options:

l 1 x CX108V 8 x 100W channels
l 2 x CX204V 4 x 200W channels
l A combination of CX302V (2 x 200W channels); CX802V (2 x 400W channels), CX1202V (2 x 800W channels) & CX204V (4 x 200W channels) up to a maximum of eight channels.

When using the RAVE 722az digital signal processor the amplifiers are interfaced by QSC's dataport connection. This data interface allows extensive amplifier status information to be reviewed on one of our standard GUI screens.

Access to the GUI control is via username and password entry, this allows multiple users and levels of secure access to be implemented. We can also customise the controls available too.

Read about our largest DSP system to date which was installed at Princess Yachts or call now to book a free demonstatration.

NEWS: We are investigating the use of touch screens and small format, low power PC's to provide the basis for a range of touch screen controllers and microphones to be used inconjuction with our DSP & networked audio systems.

GUI Screens


Background Music Controls


Priority Signal Controls


Emergency Override


Zonal Masters


Amplifier Status

Product Ranges & Services

Featured Project

Public Address

Voice Alarm

Network Audio

Heysham Power Station

We have just completed an installation using two of QSC Audio's RAVE 522ua units to link Heysham 1's Voice Alarm system to the sites simulator suite located in Heysham 2.

Induction Loop Systems

Disabled Refuge Systems

Design & Maintenance