Dual-voice coil speakers provide inexpensive, “full stereo sound” from 1 single speaker. They are a great choice for those on a low budget, or those who prefer only one speaker in a smaller area (ex. hallway, bathroom, closet, etc.). Each dual voice coil speaker has two inputs (one for the left channel, and one for the right channel of an amplifier). These dual terminals, in combination with the twin angled dome tweeters and 8 in. woofer included in our CPD650, provide amazing stereo performance. The CPD650 is our “TOP-OF-THE-LINE” stereo ceiling speaker.