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Treated for Sound

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In many cases, it is hard for a FOUR MASTER to get drivers excited about the benefits of sound treatment. It is often hard to justify spending money on what cannot be seen and although the function of it can be explained, the resultant benefit to the sound is difficult to perceive without sitting in identical cars with identical systems, one treated and one not. We believe that a treated car will improve the performance of your speakers by up to 40% and firmly believe this represents a significant return on a modest investment.

Treated for Sound article
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