One pair of TMS215’s running off a DIGITAL amp at around 1800 watts per side is sufficient for most venues up to 500 people. Above that the band hire in a larger sound system for the event. Thumping out the bottom end for the Band. With a short to medium throw bass, crossed over at 250 hertz. 1.8Kw’s on each cabinet pushes out a solid, tight, stomach thumping bass. Not as deep in sound as 4×18 inch units but they fit in the truck and only take two folk to trundle them about. Ideal.