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<blockquote data-quote="Declan Slater" data-source="post: 137992" data-attributes="member: 964"><p>Re: dB calculations</p><p></p><p>Well, the "power alley" effect of two seperated subwoofers, or groups of subwoofers, can work out pretty nice sometimes in longer rooms with poor acoustics. Another effect at work here is the polar pattern or (somewhat) directionality of different subwoofer cabinet designs. I often use a pair of single 15" subs together on stage left, and another pair stage right. Indoors, the combined pattern gives a nice power alley that works well with large and deep floor areas. If outdoors, this effect leaves far too little low end in areas not between the mains. If I turn the subs out at around 45 degrees away from centerline, the "power alley" effect is often widened dramatically, and matched up much better with the polar pattern of the tops.</p></blockquote><p></p>
[QUOTE="Declan Slater, post: 137992, member: 964"] Re: dB calculations Well, the "power alley" effect of two seperated subwoofers, or groups of subwoofers, can work out pretty nice sometimes in longer rooms with poor acoustics. Another effect at work here is the polar pattern or (somewhat) directionality of different subwoofer cabinet designs. I often use a pair of single 15" subs together on stage left, and another pair stage right. Indoors, the combined pattern gives a nice power alley that works well with large and deep floor areas. If outdoors, this effect leaves far too little low end in areas not between the mains. If I turn the subs out at around 45 degrees away from centerline, the "power alley" effect is often widened dramatically, and matched up much better with the polar pattern of the tops. [/QUOTE]
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