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Loudspeaker Sensitivity
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<blockquote data-quote="Brian Oppegaard" data-source="post: 82720" data-attributes="member: 527"><p>Re: Loudspeaker Sensitivity</p><p></p><p></p><p></p><p>Testify! It seems like the misleading specs have gotten worse lately with the trend toward smaller power supplies. 2 cycles of 40Hz tone burst do sound like thump thump thump, but disco is dead and modern electronic music as you note has many long passages of high level low frequency almost sine waves. Anything shorter than 40ms is a bogus spec IMHO and if you really want to shake em til you break em you have to have at least several seconds of full power on tap. At AES a few years ago I suggested three power specs for an amplifier instead of just one, corresponding to three time intervals. It was called 4 4 4 in homage to a (briefly) leading political candidates slogan. It stands for the power delivered for 40 milliseconds (the minimum significant hold time), 4 seconds (a crescendo), and 4 ever (long term continuous power until thermal). I have this spec on my web site for my amps and few competitors. <a href="http://www.speakerpower.net/comparative-performance.html" target="_blank">Comparative Performance - SpeakerPower</a></p></blockquote><p></p>
[QUOTE="Brian Oppegaard, post: 82720, member: 527"] Re: Loudspeaker Sensitivity Testify! It seems like the misleading specs have gotten worse lately with the trend toward smaller power supplies. 2 cycles of 40Hz tone burst do sound like thump thump thump, but disco is dead and modern electronic music as you note has many long passages of high level low frequency almost sine waves. Anything shorter than 40ms is a bogus spec IMHO and if you really want to shake em til you break em you have to have at least several seconds of full power on tap. At AES a few years ago I suggested three power specs for an amplifier instead of just one, corresponding to three time intervals. It was called 4 4 4 in homage to a (briefly) leading political candidates slogan. It stands for the power delivered for 40 milliseconds (the minimum significant hold time), 4 seconds (a crescendo), and 4 ever (long term continuous power until thermal). I have this spec on my web site for my amps and few competitors. [url=http://www.speakerpower.net/comparative-performance.html]Comparative Performance - SpeakerPower[/url] [/QUOTE]
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