SDA® Surround Technologies
Front SDA® Stage Array
Front SDA Stage Array adds SDA Technology to the front Left and Right channels of the SurroundBar 50. What this means is 2 additional SDA drivers are added to the front stereo channels, allowing us to project the sound far beyond the physical confines of the speaker.
The result is much wider sound stage that does not stop at the edges of the speaker bar, integrating seamlessly with rear SDA channels for 360 degree surround sound. Perfect for complementing your widescreen TV's big picture is big sound. Audio sounds like is coming from all around you. In many cases it even works better then a conventional 5 channel speaker system.
Rear SDA® Surround Sound
Rear SDA is the magic behind SurroundBar's all enveloping surround sound. By applying patented SDA Technology to the surround channels of the SurroundBar and SurroundBar 50, we can project surround sound all the way around you. Rear SDA provides the 360 degree wrap around surround sound. Competing products try to bounce sound off of surrounding surfaces for the surround effect. This is great in theory if you have a perfectly symmetrical room with perfect acoustics, place the speaker and TV in the perfect position and sit in the correct position. Otherwise, the surround effect is diminished.
With Polk's patented SDA Surround technology, the result is 360 degree surround sound, without rear speakers, without rear walls or special room placement.
