It really depends on how you’re going to use your subwoofer. An active subwoofer has all the necessary settings set up for immediate use. So if you just want listen to music on regular basis, it’s the way to go. Passive subwoofers are more commonly used by professionals because you have to do the entire set up yourself and sometimes even buy an amplifier and crossover in addition to it. The quality of the sound and your enjoyment levels can be the same with both so it’s more a question of taste and money.