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ID CD1e or cd1 pro
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<blockquote data-quote="audioholic" data-source="post: 4002587" data-attributes="member: 549629"><p>The passive shouldn't affect your EQ settings really. The passive would cut out freqs the horn shouldn't be required to play, same as an active unit would, but the freqs left still need EQ'ing. Not using a passive would mean using an active xo, which would still require (apprx) the same EQ settings.</p><p>Piezo speaker:</p><p></p><p><a href="http://en.wikipedia.org/wiki/Loudspeakers#Piezoelectric_speakers" target="_blank">http://en.wikipedia.org/wiki/Loudspeakers#Piezoelectric_speakers</a></p><p></p><p>"<em>Piezoelectricity</em></p><p></p><p><em>In 1880, Jacques and Pierre Curie discovered an unusual characteristic of certain crystalline minerals: when subjected to a mechanical force, the crystals became electrically polarized. Tension and compression generated voltages of opposite polarity, and in proportion to the applied force. Subsequently, the converse of this relationship was confirmed: if one of these voltage-generating crystals was exposed to an electric field it lengthened or shortened according to the polarity of the field, and in proportion to the strength of the field. These behaviors were labeled the piezoelectric effect and the inverse piezoelectric effect, respectively, from the Greek word piezein, meaning to press or squeeze.</em></p><p></p><p><em> </em></p><p></p><p><em>Although the magnitudes of piezoelectric voltages, movements, or forces are small, and often require amplification (a typical disc of piezoelectric ceramic will increase or decrease in thickness by only a small fraction of a millimeter, for example) piezoelectric materials have been adapted to an impressive range of applications. The piezoelectric effect is used in sensing applications, such as in force or displacement sensors. The inverse piezoelectric effect is used in actuation applications, such as in motors and devices that precisely control positioning, and in generating sonic and ultrasonic signals." </em>- <a href="http://www.americanpiezo.com/piezo_theory/" target="_blank">http://www.americanpiezo.com/piezo_theory/</a></p><p></p><p>Basically, piezo speakers are those tiny little speakers used in cell phones and such. Very small.</p></blockquote><p></p>
[QUOTE="audioholic, post: 4002587, member: 549629"] The passive shouldn't affect your EQ settings really. The passive would cut out freqs the horn shouldn't be required to play, same as an active unit would, but the freqs left still need EQ'ing. Not using a passive would mean using an active xo, which would still require (apprx) the same EQ settings. Piezo speaker: [URL="http://en.wikipedia.org/wiki/Loudspeakers#Piezoelectric_speakers"]http://en.wikipedia.org/wiki/Loudspeakers#Piezoelectric_speakers[/URL] "[I]Piezoelectricity[/I] [I]In 1880, Jacques and Pierre Curie discovered an unusual characteristic of certain crystalline minerals: when subjected to a mechanical force, the crystals became electrically polarized. Tension and compression generated voltages of opposite polarity, and in proportion to the applied force. Subsequently, the converse of this relationship was confirmed: if one of these voltage-generating crystals was exposed to an electric field it lengthened or shortened according to the polarity of the field, and in proportion to the strength of the field. These behaviors were labeled the piezoelectric effect and the inverse piezoelectric effect, respectively, from the Greek word piezein, meaning to press or squeeze.[/I] [I] [/I] [I]Although the magnitudes of piezoelectric voltages, movements, or forces are small, and often require amplification (a typical disc of piezoelectric ceramic will increase or decrease in thickness by only a small fraction of a millimeter, for example) piezoelectric materials have been adapted to an impressive range of applications. The piezoelectric effect is used in sensing applications, such as in force or displacement sensors. The inverse piezoelectric effect is used in actuation applications, such as in motors and devices that precisely control positioning, and in generating sonic and ultrasonic signals." [/I]- [URL="http://www.americanpiezo.com/piezo_theory/"]http://www.americanpiezo.com/piezo_theory/[/URL] Basically, piezo speakers are those tiny little speakers used in cell phones and such. Very small. [/QUOTE]
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