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Martin Logan Aerius i Loudspeakers
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<blockquote data-quote="Norval" data-source="post: 23538" data-attributes="member: 62"><p>No, this is not realy simular the Helmshotz principle i.m.o. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" /></p><p></p><p>That is a chambered transmission line (TL), which is has line length to a Quater of the wavelength of the lowest fequency that needs to be 'boosted'. The chamber in this case is mainly to provide a smoother frequency response. The Helmsholtz resonator is either a tuned "box" witha aport in it that absorb a certain frequency, or the other method is to have a large piece of plywood (or other material) mounted on a cavity, with damping material a inch or so behind it. The plywood will resonate at a certain ferquency and absorb that energy. The damping behind it prevent the must absorb the energy therefore damps the resonator.</p></blockquote><p></p>
[QUOTE="Norval, post: 23538, member: 62"] No, this is not realy simular the Helmshotz principle i.m.o. ;) That is a chambered transmission line (TL), which is has line length to a Quater of the wavelength of the lowest fequency that needs to be 'boosted'. The chamber in this case is mainly to provide a smoother frequency response. The Helmsholtz resonator is either a tuned "box" witha aport in it that absorb a certain frequency, or the other method is to have a large piece of plywood (or other material) mounted on a cavity, with damping material a inch or so behind it. The plywood will resonate at a certain ferquency and absorb that energy. The damping behind it prevent the must absorb the energy therefore damps the resonator. [/QUOTE]
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Martin Logan Aerius i Loudspeakers
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