RadioShack 15 Inch 2-Way Active SpeakerRadioShack 15 Inch 2 Way Active Speaker 20,000 Watts PMPO 4001925 The RadioShack 15 Inch 2 Way Active Speaker is designed for high output audio applications such as events, presentations, and sound reinforcement. Its active design allows direct connection to audio sources without the need for an external amplifier. Suitable for portable and fixed audio setups where strong sound projection is required.