Quote:
Originally Posted by adelphi_sky
It's not just BMW. Think about all the TVs, stereos, etc. that have "surround" sound buttons but only have two speakers. The sound isn't truly surround. It's just a processor that plays tricks on the ears. Though the sound they create is kinda cheesy.
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True, but they "fake" surround. They use phasing to create a sound field.
True AV surround receivers have real surround decoders that process individual channels in true surround sound coded material.
The worst of the surround processors are the ones that make 2 speaker systems into "surround". Those sound the worst.
If you've got a true surround AV receiver, there are other surround algorithms that can take 2 channel source material and create multi channel surround output so that you can listen to 2 channel material coming out of all your surround speakers. Those processors again create a surround field from material that's not codes to be surround.
That is what Logic7 does.
Also, an AV receiver has adjustable settings for speaker size, distance, delay, etc...
Logic7 isn't that bad. It tries it's best to take 2 channel sources and create a sound field. The major thing that distinguishes Logic7 from say the "surround' on a 2 speaker TV, is that Logic7 actually uses multiple drivers/speakers to create a sound field where each location in the car hears left and right better. So that the drivers doesn't just hear the left channel loudly and little of the right, and the passenger doesn't just hear the right channel loudly and little of the left.
By using phasing Logic7 moves left and right closer to each sitting position, and does a decent imitation.
Not all 2 channel stereo is created equal either. It depends on how the engineers recorded it an processed it.
Take a listen to early Van Halen recordings, the main guitars come from one side and the vocals from another. Then, you hear some guitars in the other channels but at a quieter level and mostly it's the stereo guitar effects. Same with vocals. You can hear Roth's voice clean in one channel and his reverbed and/or delayed/processed effects come through the other channel at a lower level. If you listen to just 1 channel of those recordings you don't fully hear the whole band. But, played together in stereo it sounds cool.
Then there are stereo recordings where most of the sounds are split evenly left and right but some sounds are "panned" left or right" to enhance the stereo stage image. This all works in a 2 speaker stereo setup. But in a car the recordings sound funny as the left and right on some recordings is too much in one channel or another to sound good, because in a car we don't sit in the "sweet spot" to hear the image correctly.
Logic7 tried to remedy that. It works good with some recordings with others so so.
I optioned the HK Logic7 as over all it's cleaner and plays louder than the standard system. I'm looking forward to hearing different material through Logic7 and having extended use of it to get a better in depth experience by which to better judge it.