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PM DIY Baffle Step
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<blockquote data-quote="Andre Vergison" data-source="post: 213279" data-attributes="member: 13374"><p>Summarizing a bit:</p><p></p><p></p><p>That's true indeed, discussed above.</p><p></p><p></p><p>6 dB it is, and <a href="http://audiojudgement.com/speaker-baffle-design-and-diffraction/" target="_blank">http://audiojudgement.com/speaker-baffle-design-and-diffraction/</a> explains it nicely:</p><p><em>What actually happens is, that the sound which should be going backwards, reflects from the baffle and goes forward. These waves will merge with the waves that normally expand forwards, to combine for a +6 db in output. </em></p><p></p><p>Looks equivalent to the following: we take the speaker, without baffle, let it radiate forward and add a second forward radiating speaker generating the lost backward waves (the other half space, hence same energy). We get twice same output, hence again +6 dB. However, in this scenario we'd have to supply double power. With the baffle we don't need it, the baffle increases the efficiency.</p><p>All of that within frequency range limits, of course.</p></blockquote><p></p>
[QUOTE="Andre Vergison, post: 213279, member: 13374"] Summarizing a bit: That's true indeed, discussed above. 6 dB it is, and [URL]http://audiojudgement.com/speaker-baffle-design-and-diffraction/[/URL] explains it nicely: [I]What actually happens is, that the sound which should be going backwards, reflects from the baffle and goes forward. These waves will merge with the waves that normally expand forwards, to combine for a +6 db in output. [/I] Looks equivalent to the following: we take the speaker, without baffle, let it radiate forward and add a second forward radiating speaker generating the lost backward waves (the other half space, hence same energy). We get twice same output, hence again +6 dB. However, in this scenario we'd have to supply double power. With the baffle we don't need it, the baffle increases the efficiency. All of that within frequency range limits, of course. [/QUOTE]
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