Dolby Pro Logic II

Dolby Pro Logic II transforms traditional stereo audio into 5.1-channel surround sound for a seamless listening experience full of presence and depth.

Dolby Pro Logic ll benefits

Stereo to surround

Dolby® Pro Logic® II uses hidden audio cues that already exist in stereo content to create realistic surround sound with five full-range channels: Left, Right, Center, Left Surround, and Right Surround.

Hear the details

With its full-range performance, Dolby Pro Logic II lets you hear all the details and subtleties in movie content, music, games, and other entertainment.

The sound of real life

By widening the soundfield, Dolby Pro Logic II enables seamless, natural surround sound.

Your movie collection features a host of two-channel (stereo) classics. Most of your music is in stereo, too, and the same holds true for your video games. They sound perfectly acceptable, but they would definitely sound better in surround.

Dolby Pro Logic II makes this possible, converting high-quality stereo content into compelling 5.1-channel surround sound.

With Dolby Pro Logic II technology in your home theater, you're no longer limited to the binary left-right world of stereo. Dolby Pro Logic II takes the audio for almost any TV show, movie, game, or music album and wraps it around you. The audio comes to life.

An advanced matrixing technology for products like A/V receivers and game consoles, Dolby Pro Logic II delivers convincing surround sound from stereo content.

When paired with Dolby Digital 5.1 decoding in a device, Dolby Pro Logic II gives consumers a 5.1-channel surround sound experience on all their content.
Later variations of Dolby Pro Logic II derive even more channels from stereo content. Dolby Pro Logic IIx adds back surround channels for 7.1 surround, while Dolby Pro Logic IIz adds two front height channels.
When broadcasters encode their stereo signals specifically for Dolby Pro Logic II playback, it allows them to deliver surround and localization effects over stereo services that are more like discrete 5.1 transmissions — without compromising regular stereo and mono playback.