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Gaining Decibels?
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<blockquote data-quote="keep_hope_alive" data-source="post: 7719320" data-attributes="member: 576029"><p>In addition, you start encountering losses in pressure through factory seals, A/C vents, even mid/midbass cones will move. I can play 12 Hz with subs only and watch my midbass cones move a lot in response to the pressure. You can see/feel the body panels giving. Flex is pressure loss. There is a reason why high SPL cars have thick Lexan windows, bolted doors, concrete, etc.</p><p></p><p>Multi sub builds suffer phase interference. You want to ensure that destructive interference does not occur at your peak frequency, but constructive interference does. Note also that mic location changes what frequencies are constructive/destructive.</p><p></p><p>A proper understanding and application of physics goes a long way.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 7719320, member: 576029"] In addition, you start encountering losses in pressure through factory seals, A/C vents, even mid/midbass cones will move. I can play 12 Hz with subs only and watch my midbass cones move a lot in response to the pressure. You can see/feel the body panels giving. Flex is pressure loss. There is a reason why high SPL cars have thick Lexan windows, bolted doors, concrete, etc. Multi sub builds suffer phase interference. You want to ensure that destructive interference does not occur at your peak frequency, but constructive interference does. Note also that mic location changes what frequencies are constructive/destructive. A proper understanding and application of physics goes a long way. [/QUOTE]
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