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<blockquote data-quote="hispls" data-source="post: 8602301" data-attributes="member: 614752">Ohm&#039;s law says P=IE.&nbsp;&nbsp; Frequency doesn&#039;t enter into it.Seriously, use the search function.&nbsp; This topic has been done before and done better.&nbsp; IMO you should run out and buy a fan if you just want to blow your hair around.&nbsp; The efficiency of a loudspeaker (electrical energy in to acoustic energy out) is absolutely dismal... 1 or 2 percent, and even our &quot;high efficiency&quot; class d amps aren&#039;t stellar.Go overboard with power and cone/port area... when you&#039;re loud enough cool things will happen for you to make youtube videos and you&#039;ll start breaking your vehicle.&nbsp; Or try to build a one-note-wonder that&#039;ll only be good for playing test tones or some ****** slowed whale song.Whatever way you slice it, you&#039;re going to need to get really loud so you had better have some time and/or money.Just stop already.&nbsp; You&#039;ve gone from &quot;lower frequencies take more power&quot; to &quot;low frequencies have longer wavelengths which take more power&quot; to &quot;hair trick songs take more power&quot;.&nbsp;&nbsp; P=IE&nbsp;&nbsp; It&#039;s called Ohm&#039;s Law.If you want to backpedal even further and say &quot;You will need a strong electrical system to play really loud for extended periods of time&quot; that is true, but it&#039;s nothing like what you started out saying.Your sub is moving the least at tuning but that will be the lowest point on your impedance curve.</blockquote>

[QUOTE="hispls, post: 8602301, member: 614752"] Ohm's law says P=IE. Frequency doesn't enter into it. Seriously, use the search function. This topic has been done before and done better. IMO you should run out and buy a fan if you just want to blow your hair around. The efficiency of a loudspeaker (electrical energy in to acoustic energy out) is absolutely dismal... 1 or 2 percent, and even our "high efficiency" class d amps aren't stellar. Go overboard with power and cone/port area... when you're loud enough cool things will happen for you to make youtube videos and you'll start breaking your vehicle. Or try to build a one-note-wonder that'll only be good for playing test tones or some ****** slowed whale song. Whatever way you slice it, you're going to need to get really loud so you had better have some time and/or money. Just stop already. You've gone from "lower frequencies take more power" to "low frequencies have longer wavelengths which take more power" to "hair trick songs take more power". P=IE It's called Ohm's Law. If you want to backpedal even further and say "You will need a strong electrical system to play really loud for extended periods of time" that is true, but it's nothing like what you started out saying. Your sub is moving the least at tuning but that will be the lowest point on your impedance curve. [/QUOTE]

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