Monoprice Monolith 15” THX Ultra Subwoofer Review

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The Monolith 15” THX Ultra holds THX’s “Ultra” performance class certification, which means it should be able to help to present a THX experience in a 3,000 cubic foot room with a 12’ viewing distance from the screen. That is a big space to fill, and the laws of physics dictate that a large sub is needed for that task (or at least a whole lot of small subs). The 15” THX Ultra is such a behemoth that, at a glance, it does look like it might be up to the task, but the THX certification is verified proof, so no guessing is needed. However, the 15” THX Ultra is only certified for that level of performance in one of its operating modes: all ports open and EQ switch set to “THX.” It isn’t that other operating modes will perform significantly worse, it’s just that they don’t have very specific behavior needed to act totally predictable by the THX controlling processor otherwise.”







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