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Audio and Video Talk
General Discussion
Misconceptions in the SA general public regarding Home Cinema
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<blockquote data-quote="Timber_MG" data-source="post: 1107" data-attributes="member: 18"><p>@Vaughn: horses for courses. I generally also employ bass reflex but I just wanted to expound on the catches and present the possibilities of other means of doing things. I quite like working with volumes >100l as they result in shorter port lengths and thus move the pipe-modes further out of band. It is a case of appropriate engineering trade-ofs for a desired end result.</p><p></p><p>@defiantiger : The resonances are generally in the midrange and are excited by the signal as well as (in the case of a properly Low-passed subwoofer) driver distorition and port noise with ports that are too small.</p><p></p><p>@Vaughn: many high-excursion type drivers have very high Le and research by the like of Kippel has shown that the inductance modulation as a result of high excursion in drivers that don't account properly for these effects are very audible (non-linear distoriton)</p><p></p><p>Also the effect of the pipe-resonance of the port is non-minimum phase (simplified occurs as a result of seperate acoustic events in the time-domain) and the ear is thus orders of magnitude more sensitive to these effects so they have to be minimised acoustically and cannot be corrected for electronically.</p></blockquote><p></p>
[QUOTE="Timber_MG, post: 1107, member: 18"] @Vaughn: horses for courses. I generally also employ bass reflex but I just wanted to expound on the catches and present the possibilities of other means of doing things. I quite like working with volumes >100l as they result in shorter port lengths and thus move the pipe-modes further out of band. It is a case of appropriate engineering trade-ofs for a desired end result. @defiantiger : The resonances are generally in the midrange and are excited by the signal as well as (in the case of a properly Low-passed subwoofer) driver distorition and port noise with ports that are too small. @Vaughn: many high-excursion type drivers have very high Le and research by the like of Kippel has shown that the inductance modulation as a result of high excursion in drivers that don't account properly for these effects are very audible (non-linear distoriton) Also the effect of the pipe-resonance of the port is non-minimum phase (simplified occurs as a result of seperate acoustic events in the time-domain) and the ear is thus orders of magnitude more sensitive to these effects so they have to be minimised acoustically and cannot be corrected for electronically. [/QUOTE]
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Audio and Video Talk
General Discussion
Misconceptions in the SA general public regarding Home Cinema
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