POLK AUDIO SC6S in-Ceiling Speaker Home Audio Crossover, White (AW6600-A) Detailed, dynamic real stereo sound in places where 2 speakers couldn't fit Ideal for stairways, foyers, walk-in closets, pantries & mud-rooms Single, compact loudspeaker that virtually disappears into its surroundings but delivers incredible stereo sound using a unique dual-voice coil/dual tweeter configuration Each