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<blockquote data-quote="keep_hope_alive" data-source="post: 7336484" data-attributes="member: 576029"><a href="http://www.altronix.com/app_notes/calc.php" target="_blank">Voltage Drop, Power, Battery Calculator</a>Refer to the bottom calculator. Input total time and expected current draw.&nbsp; Then it calculates the required battery amp-hour rating needed.Mixing different speaker types will sound poor, as will multiple speakers facing the same direction.&nbsp; You can research Comb Filtering for why it will sound poor.&nbsp; I design commercial sound systems, we avoid comb filtering at all costs.Using one pair of high power speakers is always preferred for stereo playback, simple, and may be cheaper in the long run.&nbsp; If you already have a bunch of cheap speakers you want to reuse, then whatever.&nbsp; Not trying to give you a hard time, just giving input so your time isn&#039;t wasted.&nbsp; For mono playback, a single center cluster will always outperform other configurations.You can determine the number of amplifiers by figuring out impedance loads.&nbsp; I recommend a full range class-D simply for efficiency.&nbsp; I see no low end, at least replace the 6x9&#039;s with some 10&#039;s and run them low pass.Mfr and model numbers, power ratings, impedance, and sketches your plans will allow for better input.</blockquote>

[QUOTE="keep_hope_alive, post: 7336484, member: 576029"] [URL="http://www.altronix.com/app_notes/calc.php"]Voltage Drop, Power, Battery Calculator[/URL] Refer to the bottom calculator. Input total time and expected current draw. Then it calculates the required battery amp-hour rating needed. Mixing different speaker types will sound poor, as will multiple speakers facing the same direction. You can research Comb Filtering for why it will sound poor. I design commercial sound systems, we avoid comb filtering at all costs. Using one pair of high power speakers is always preferred for stereo playback, simple, and may be cheaper in the long run. If you already have a bunch of cheap speakers you want to reuse, then whatever. Not trying to give you a hard time, just giving input so your time isn't wasted. For mono playback, a single center cluster will always outperform other configurations. You can determine the number of amplifiers by figuring out impedance loads. I recommend a full range class-D simply for efficiency. I see no low end, at least replace the 6x9's with some 10's and run them low pass. Mfr and model numbers, power ratings, impedance, and sketches your plans will allow for better input. [/QUOTE]

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