Stereo: Comments from Bose: Difference between revisions

<blockquote><ul><li>An L1 system can project a wide stereo field on stage and into the audience -- particularly the Model I and the Model II. Because the I and II are essentially 14' line arrays (7' speaker with a 7' mirror image source created by the floor reflection) '''they project sound at much less loss with distance than a conventional speaker. This has the effect of greatly enhancing the size of the stereo field'''.  

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<blockquote>'''Our system has such a gradual change in sound pressure with distance that a pair of systems are clearly and more equally heard way off-axis. This is the quality that gives a pair of L1's such a wide stereo image "sweet spot".''' It's also a quality that leads to bad dual-mono. In a dual-mono setup where, say, the vocal is center-panned, if you are off-axis, you might hear both systems equally in level, but they will arrive at your ears at different times, corresponding to the difference in distances between the straight-line paths of the two L1's. At a half-wavelength path difference, you will get a complete cancellation where you are listening and above this frequency, you will get, alternatively, reinforcement, then cancellation and so on as frequency goes higher. You will also get a horizontal polar pattern that starts to look like one of those cartoon-character gloves. These are called "lobes" or "fingering" and the higher you go in frequency, more lobes (or fingers) will show up. And so, as you walk in an arc around the pair, you will hear sound get loud, soft, loud, soft and so on. In contrast, a single L1 has an almost perfect, arc-like polar pattern throughout most of its range.  

<br>[[Can_I_Use_It_as_a_PA#Avoid:_Dual_Mono|Source - Avoid: Dual Mono]]  

<blockquote>The minor degradation of midrange interference off the centerline probably cannot be avoided when recorded stereo material is played on any speakers. This is one of the compromises of the stereo format itself.