◊ In May 2012, Mario di Cola updated our JBL VT4888 PA system yet again.
The first time when Mario di Cola updated our sound system was in August 2011. In the summer of 2010, we finally agreed that Mario would come to us. Despite a rainy summer, we had four sunny days. We had to hire a stadium and build two 12-meter high PA towers. Mario arrived at night and we started to work first thing in the morning. Each column was separately measured and tested before it became part of the system. Next, we hang the afore tested columns in two configurations: small array (eight loudspeakers) and a big one (sixteen loudspeaker).
It was a tough job and we had to be highly focused all the time. Mario was placing sequential positions of measuring mikes and walking tens of kilometers daily, because the measurements were taken from ten to one hundred and twenty meters away from the PA system. He worked 12 hours a day, because he could spend only three days in Poland. Mario used various filters, which he arranged as building blocks working on appropriate pitches and wherever problems occurred he topped that with allpasses.
After preparing presets for the small array (8 elements), we set up the big array (16 pcs). Mario had to do the same job once again. Mario worked nonstop without any breaks.
We sent the presets to USA at night and received them in the morning, checked them and copied them into the amplifiers.
And it turned out we don’t need the XTA processors any more.
We are equipped with two kinds of presets prepared for two sizes of arrays and that is all we need. We just need to send one signal to one array (or more if we want to split the array) and the amplifiers distribute it. Full range signal is sent from one amplifier to another where it is filtrated to feed each group of speakers (subs, lows, mids, highs). Each amplifier is ready to process any band and all you need to do is just to recall a specific preset. However, we decided that further control is needed to set delays, invert phase or do little adjustments to EQ easily.
In May 2012, Mario di Cola updated our JBL VT4888 PA system yet again.
More in press : MiT 2012/03
