The Eminence Alpha 4 speaker is a very versatile driver that is rated for 110-watts of program power, making it ideal for full range, as a mid-bass or as a strict midrange. This 8-ohm version is perfectly suited for line arrays, car doors and side panels and other tight fitting applications. They can be stacked by themselves in a column for vocal applications or in conjunction with a tweeter and a sub for compact, high performance PA or instrument applications.