One of the highlights of Dinagyang is the streetparty along the major streets of Downtown Iloilo City. Aside from kiosks selling food and other items, one of the notable attractions would be these SUPER BOOM BOXes. Located in major intersections along Calle Real, it was a something new for me to actually not only see them but also hear and feel them. It would take an adventurous person to pass between these SUPER BOOM BOXes since aside from the deafening sound, your heart seem to stop and you'll have difficulty breathing (well that's how I felt). But it was really surprising to see people staying in front or in between them and "enjoying" them.
Youtube link as posted in SSC Forum