The wide selection of 5.25" speakers we carry is sure to include something that will make your system sound its best. Full range 5.25" speakers are intended to provide you with mid-bass frequences, and high frequences. Most 5.25" speakers include a tweeter in the middle that will provide your system with the highest frequencies. This combination of mid-bass speaker and tweeter provides your system with a full-range of frequencies that gives your system overall balance.