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<blockquote data-quote="n2audio" data-source="post: 8386142" data-attributes="member: 540940">I think you&#039;d be surprised.For one, I&#039;m not sure you fully understand what a 0db tone is.There&#039;s also impedance.&nbsp; Any given sub is rarely at nominal impedance.Most bass heavy songs I hear have a kick at the front of the wave and fade into something relatively soft.&nbsp; If you measure that second (or so) of energy in the wave against a 0db tone of a similar frequency I would expect it to have significantly less.The 1/3 &quot;rule&quot; isn&#039;t a rule at all.&nbsp; It&#039;s something Richard Clark mentioned years ago at carsound in a discussion about current demand and how much amplifier power could be run with a certain size alternator.He said something to the effect of music with a crest factor higher than 1/3 could hardly be recognized as music.&nbsp; That may have been a bit of an exaggeration, but the point was made.A few years back I had the chance to watch an auto electric shop&#039;s charging system analyzer run while I played Bass Mechanik at full volume.&nbsp; I was running two zed amps totaling right around 1200w rms.The highest current draw measured was around 65A.&nbsp; It basically hovered from 40-60.If you&#039;ve seen JL&#039;s school of sound on Youtube - the highest crest factor of the samples they had was actually hard rock - of course that was due to the mid-range material, so in that case a monster sub amp wouldn&#039;t be much of a factor.</blockquote>

[QUOTE="n2audio, post: 8386142, member: 540940"] I think you'd be surprised. For one, I'm not sure you fully understand what a 0db tone is. There's also impedance. Any given sub is rarely at nominal impedance. Most bass heavy songs I hear have a kick at the front of the wave and fade into something relatively soft. If you measure that second (or so) of energy in the wave against a 0db tone of a similar frequency I would expect it to have significantly less. The 1/3 "rule" isn't a rule at all. It's something Richard Clark mentioned years ago at carsound in a discussion about current demand and how much amplifier power could be run with a certain size alternator. He said something to the effect of music with a crest factor higher than 1/3 could hardly be recognized as music. That may have been a bit of an exaggeration, but the point was made. A few years back I had the chance to watch an auto electric shop's charging system analyzer run while I played Bass Mechanik at full volume. I was running two zed amps totaling right around 1200w rms. The highest current draw measured was around 65A. It basically hovered from 40-60. If you've seen JL's school of sound on Youtube - the highest crest factor of the samples they had was actually hard rock - of course that was due to the mid-range material, so in that case a monster sub amp wouldn't be much of a factor. [/QUOTE]

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