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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Peter Morris" data-source="post: 137329" data-attributes="member: 652"><p>Re: New DIY Mid High</p><p></p><p></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Yes, but to answer Art’s question, it’s not about area, it’s about volume – diaphragm area multiplied Xmax. </span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">It’s about designing a driver that’s very efficient between 6 KHz and 20 KHz i.e. has a high resonate frequency and can take good amount of power, not Xmax and operate without diaphragm break-up modes above 10 KHz unlike most large format compression drivers including the DH1A.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">There is also an advantage on <strong>complex signals (music)</strong> in having one driver cover the range in this case from 800 Hz to 6.75 Khz and another from 6.75 KHz to 20 KHz. The output is the sum of these two.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"><a href="http://www.xlrtechs.com/dbkeele.com/PDF/Keele%20(2004-10%20AES%20Preprint)%20-%20Maximum%20Efficiency%20of%20Compression%20Drivers.pdf" target="_blank">http://www.xlrtechs.com/dbkeele.com/PDF/Keele (2004-10 AES Preprint) - Maximum Efficiency of Compression Drivers.pdf</a></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"><a href="http://www.eighteensound.it/TECHNOLOGIES/TPM" target="_blank">http://www.eighteensound.it/TECHNOLOGIES/TPM</a></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 137329, member: 652"] Re: New DIY Mid High [SIZE=3][COLOR=#000000][FONT=Calibri]Yes, but to answer Art’s question, it’s not about area, it’s about volume – diaphragm area multiplied Xmax. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]It’s about designing a driver that’s very efficient between 6 KHz and 20 KHz i.e. has a high resonate frequency and can take good amount of power, not Xmax and operate without diaphragm break-up modes above 10 KHz unlike most large format compression drivers including the DH1A. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]There is also an advantage on [B]complex signals (music)[/B] in having one driver cover the range in this case from 800 Hz to 6.75 Khz and another from 6.75 KHz to 20 KHz. The output is the sum of these two. [URL]http://www.xlrtechs.com/dbkeele.com/PDF/Keele%20(2004-10%20AES%20Preprint)%20-%20Maximum%20Efficiency%20of%20Compression%20Drivers.pdf[/URL] [URL]http://www.eighteensound.it/TECHNOLOGIES/TPM[/URL] [/FONT][/COLOR][/SIZE] [/QUOTE]
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