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A. IMG refers to a type of material used for speaker cones. It stands for Injection Molded Graphite.
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A. This is similar to the age-old question "are some speakers better for rock music and others better for jazz and classical". If a speaker is truly accurate, it will perform properly on any kind of music. When it comes to home theater, the same is true for the main speakers. If they can't accurately reproduce music, they will not be good for home theater. Whether one is listening to a classical masterpiece or Terminator2, wide dynamic range, low distortion and flat frequency response are all important to make the sound realistic. A good speaker will be able to reproduce the music or the movie sound as close as possible to the way it originally sounded, whether that was in a concert hall or a recording studio. The only exception is rear and center speakers which must be uniquely designed for surround applications. They too must meet the fundamental requirements of accurate reproduction to be satisfying in the final analysis.
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