DVD's have this audio pre-encoded on the disk. You do have optical audio, however, this only works in 5.1 when a Dolby Digital signal is piped through the optical cable.ĭolby Digital works by encoding a 5.1 signal as a data stream, sending it to a receiver, where it is decoded and played back as 5.1 stereo. Since your Mac/Mac Pro doesn't have this, you can't hook up a 5.1 speaker set and expect true 5.1. Optical audio will only handle 2 channels as well- it's the same signal (in two channels) on a different medium, basically.Īll PC soundcards that support proper 5.1 (save for a select few) have //multiple// line-out jacks for Front Left/Right, Center/Sub, and Rear Left/Right (3 plugs total for 5.1). Your Mac Pro or Macbook only has a single line-out, that supports 2 channels at the maximum. The complex truth, and I will attempt to explain, isn't that simple. It is the game developer's issue (sort of), and it is a //lack of hardware// issue. It is not a software issue, it is not a driver issue. No matter how much money you throw at it. There is no way to get 5.1 out of a game on a Mac Pro. The simple truth is, that even if you have a Z-5500 setup (like I do), you still will not get 5.1 surround in ///any/// applications other then while playing a DVD. You are playing a DVD with a 5.1 soundtrack You are using the OPTICAL output on your Mac You will only get 5.1 audio if the following conditions are true: Once again, the issue of 5.1 w/Apple comes up.
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