Even if you are a talented and well thought after jazz musician, you are not necessarily made of money, but you still want to be heard properly at the venues you are playing, specially in outdoor situation, and not everybody can afford a Wisdom Audio system, not to mention transporting it in your car and playing outside in all kind of weather....
Unlike regular speakers, line arrays have the unique feature of getting an even levelled sound regardless of the distance the listener is from the source, hence their use in professional audio applications like concert halls and outdoor rock concerts. They are generally heavy, expensive, difficult to set-up and require electronic equalisation and a big bank of amplifiers (Bryston anyone...)
Paul Sun went and designed his own (relatively...) portable system comprising 4 line array modules, each including 8 VIFA 3.5inch drivers, and two subwoofers using VIFA 12inch drivers.
They stack on top of each other nicely to provide an intrusive but highly effective sound system.
They are powered by two professional stereo amplifiers and a dbx electronic crossover set at 240 Hz. Although the full range drivers are limited to about 12 Khz, it is amply sufficient for this application. The sound of the guitar was reflecting the perturbations of the top end of the speakers and could be improved by using a few 19mm VIFA tweeters on a LR2 passive crossover
I have successfully implemented the 2.5in version of these drivers coupled to a 19mm VIFA tweeter and a 6dB/oct crossover for a PA application for schools and museums to be integrated into a lighting profile. We just got our first order for a project in Sydney.
VIFA also makes excellent 10in and 12in bass drivers that I have also implemented in an active subwoofer built in a 27 litres closed cabinet. You can see the combined response below. The system generates a very warm sound, and even without the subwoofer, the result is impressive.
So, Paul has managed to design a very good system, with enough portability and performance for his application, at a reasonable cost. Well done!
Born in France, well travelled, relocated to Sydney in 1997.