Logitech Pure-Fi Express Plus Omnidirectional Speaker Dock for iPod and iPhone

Logitech’s Omnidirectional Advantage: Make Any Spot in Your Room a Sweet Spot
You don't sit in one spot when you’re listening to music from your iPod. Shouldn’t your speakers produce great sound no matter where you are in your room? Most of today's speakers for the iPod are designed to deliver the highest-quality sound immediately in front of the speakers. If you move from what audiophiles call the sweet spot on the couch to the impromptu dance floor, the sound you hear can easily become distorted, and you might find yourself out of step.

The Logitech Pure-Fi Express Plus omnidirectional speakers are designed to transmit sound more consistently over a wider range of space, so you never miss a beat--no matter where you are in the room.

Logitech Audio Labs' omnidirectional speakers differ from traditional speakers. Designed to radiate sound more uniformly over a wider range of frequencies and angles, Logitech’s omnidirectional speakers create a broad sweet spot that is not dependent on a fixed listening position, as shown in Figure 2. The true hallmark of omnidirectional speakers, however, is the increased sound quality that comes from tonally balanced direct and reflected sound. The increased reverberant sound field also increases the sensation of spaciousness and listener envelopment. By designing loudspeakers to radiate sound more uniformly, Logitech delivers great sound to any spot in the room.