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<blockquote data-quote="squeak9798" data-source="post: 3048234" data-attributes="member: 555320">Here is a relatively decent real-world example of the effects of power compression;<a href="http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7897" target="_blank">http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7897</a>17.7 watts @ 133.2 dB33.9 watts @ 135.9 dB66.5 watts @ 138.8 dB120.4 watts @ 141.3 dB--- All of the above are pretty close to what we would expect to see in a driver that hasn&#039;t reached any real levels of power compression.&nbsp; In the above, he is just about doubling the power and gaining just under 3db.&nbsp; Pretty much what we would expect from &quot;theory&quot;The below is where is starts to become interesting;236.7 watts @ 143.7 dB448 watts @ 145.1 dB765 watts @ 146.2 dB999 watts @ 146.3 dB1399 watts @ 147.2 dB1886 watts @ 147.2 dBNotice how as he increases power, the increase in output consistently decreases...so much so that the last increase in power doesn&#039;t result in any increase in output.The power level increases almost 8 fold from 236 to 1886.&nbsp; From theory we would expect that increase to result in a 9db increase in output [10*log(8/1) = 9.03].&nbsp; Yet in reality he only gained around 3.5db by increasing power from 236w to 1886wHe may have reached the mechanical limit of the driver aswell (and I&#039;m not sure if that technically falls into the realm of &quot;power compression&quot;)....but you can bet power compression played a large roll in the above numbers.</blockquote>

[QUOTE="squeak9798, post: 3048234, member: 555320"] Here is a relatively decent real-world example of the effects of power compression; [URL="http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7897"]http://www.soundsolutionsaudio.com/forum/index.php?showtopic=7897[/URL] 17.7 watts @ 133.2 dB 33.9 watts @ 135.9 dB 66.5 watts @ 138.8 dB 120.4 watts @ 141.3 dB --- All of the above are pretty close to what we would expect to see in a driver that hasn't reached any real levels of power compression. In the above, he is just about doubling the power and gaining just under 3db. Pretty much what we would expect from "theory" The below is where is starts to become interesting; 236.7 watts @ 143.7 dB 448 watts @ 145.1 dB 765 watts @ 146.2 dB 999 watts @ 146.3 dB 1399 watts @ 147.2 dB 1886 watts @ 147.2 dB Notice how as he increases power, the increase in output consistently decreases...so much so that the last increase in power doesn't result in [I]any[/I] increase in output. The power level increases almost 8 fold from 236 to 1886. From theory we would expect that increase to result in a 9db increase in output [10*log(8/1) = 9.03]. Yet in reality he only gained around 3.5db by increasing power from 236w to 1886w He may have reached the mechanical limit of the driver aswell (and I'm not sure if that technically falls into the realm of "power compression")....but you can bet power compression played a large roll in the above numbers. [/QUOTE]

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