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<blockquote data-quote="Moble Enclosurs" data-source="post: 7558377" data-attributes="member: 634917"><p>You should allow the output of the deck to be always as flat as possible if you are utilizing an amp for output to the drivers. But the reason filters exist in HUs is because they do not have to be used with amplifiers or crossovers. So, if you cannot turn the LPF off, set it high and allow every bit of output through to the amplifier for the amp to control the response from there. Since the amp essentially amplifies the response, it is better in theory to have it control the filters.</p><p></p><p>Why would you filter it before it even gets amplified? This lessens your options of variable settings. I use an external crossover to set everything on my system for that reason.</p></blockquote><p></p>
[QUOTE="Moble Enclosurs, post: 7558377, member: 634917"] You should allow the output of the deck to be always as flat as possible if you are utilizing an amp for output to the drivers. But the reason filters exist in HUs is because they do not have to be used with amplifiers or crossovers. So, if you cannot turn the LPF off, set it high and allow every bit of output through to the amplifier for the amp to control the response from there. Since the amp essentially amplifies the response, it is better in theory to have it control the filters. Why would you filter it before it even gets amplified? This lessens your options of variable settings. I use an external crossover to set everything on my system for that reason. [/QUOTE]
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