Improving background music through 100V horns

As followers on Twitter may be aware, we have a large number of systems out for various Christmas markets around the country at the moment. Some of which are using 100v line horn systems to cover wide areas as public address/emergency evacuation systems but also to carry background music.

The nature and physics of the traditional 100v horn dictates that the musical bandwidth of the horn speaker is limited and although there are better 2-way horn speakers now available which stand up to the challenge of a full-range sounding speaker, budgets dictated otherwise.

So to provide a system more suited to background music in conjunction with the horn speaker system, I incorporated several 100v or "constant voltage" 2 way speakers into the system design. These would be located closer to head height than the horn system, in areas around the market where people congregate such as near Gluehwein, coffee or Hot-Dog stalls.

The speakers we used were older (and yes, quite cheap) 6.5" speakers that had done their time and already provided a good financial return. The speaker terminals were protected to a degree from the elements using a cut-out PVC junction box glued to the cabinet using Sikaflex adhesive/sealant which was a substance I use in repairing the motorhome.

By selecting a low watt tapping, we were able to integrate them into the horns located nearby. The horns provide the mid cut or "bark" with the 2 way speakers adding bass and some treble fizz. Now it's not hi-fi by any means but the combination is certainly easier to listen to than horn speakers alone.

6.5" 2 way 100v speaker rigged below a pair of traditional 100v horns. The 6.5" speakers aren't hi-fi but make background music at this Christmas Market sound a bit better around hot-dog and mulled-wine stands.