![dolby digital 2.0 dolby digital 2.0](https://c1.neweggimages.com/ProductImageCompressAll300/V0HED210527G5C68.jpg)
If you find the mono signal from the center displeasing, you'll probably want to leave the NORMAL SURROUND mode off unless you see a show specifically state it is pro logic. Make sure your source (cable box, sat box, vcr - whatever is your tuner) is able to pass a stereo signal and that you have stereo wiring run from that device to your receiver.īut as long as the box passes stereo, and you have it wired properly- you should get some form of Dolby Surround on encoded programming- and non encoded programming will usually just be center channel dominant. If the show is in mono, or doesn't have much extreme stereo material (most stuff is right up the middle)- dolby pro logic will translate that as "center"- and as a result you will get primarily audio from the center channel. If you find when switched to NORMAL SURROUND that the majority fo the sound (or all the sound) is coming from the center channel- this program is not encoded for pro logic (and it might be mono).ĭolby Pro logic simply checks the stereo signal for whatever signals are going equally to reight and left, and makes that center. If a stereo soundtrack is also Dolby Surround encoded, the decoded channels are exactly what the soundtrack's mixing engineer intended you to hear.ĭolby Surround soundtracks are usually labelled as such on the back of a DVD's case, while conventional stereo soundtracks never mention the word 'surround'.įor analog signals- you'll have to manually set the receiver to NORMAL SURROUND (or in the case of other receivers, it's sometimes labelled as PRO LOGIC or DOLBY MODE). If you run an ordinary stereo soundtrack through a Pro Logic decoder, you may well get left, centre, right and surround information, but what you get is entirely random. An ordinary stereo soundtrack was intended to be heard through two speakers only. These matrixed channels can be 'unfolded' in your home using a Pro Logic decoder and heard through a conventional five speaker surround sound system. A Dolby Surround stereo soundtrack has four channels of information consciously 'folded' into it using a technique called matrixing.
![dolby digital 2.0 dolby digital 2.0](https://www.manualsdir.com/manuals/196357/23/rotel-71-surround-sound-receiver-rsx-1067-page23.png)
Well, Dolby 2.0 is usually stereo (2.0 simply means two channels, whether stereo or two mono channels), and can be used to convey ordinary 'vanilla' stereo or Dolby Surround encoded stereo.