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DIY & Tutorials
DIY For Audio
My sonosub research and questions
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<blockquote data-quote="Timber_MG" data-source="post: 243114" data-attributes="member: 18"><p>One can estimate Xmax by hooking up a distortion meter to a near field microphone and estimating the excursion at the point at which distortion starts to go haywire. Requires a test box or working in the near field on a test baffle (but not so near-field that the driver should smack against the microphone). Work at fs to reduce motor current's impact on your measurement.</p><p></p><p>Oom Johan has cut a thin slice around a spider to inspect the coil overhang. These will be stamped top plate jobbies and pretty much take two drivers to make up for deficiencies versus a more expensive single driver setup. However you will have improved sensitivity (6dB) and improved efficiency (3dB) over a single driver.</p></blockquote><p></p>
[QUOTE="Timber_MG, post: 243114, member: 18"] One can estimate Xmax by hooking up a distortion meter to a near field microphone and estimating the excursion at the point at which distortion starts to go haywire. Requires a test box or working in the near field on a test baffle (but not so near-field that the driver should smack against the microphone). Work at fs to reduce motor current's impact on your measurement. Oom Johan has cut a thin slice around a spider to inspect the coil overhang. These will be stamped top plate jobbies and pretty much take two drivers to make up for deficiencies versus a more expensive single driver setup. However you will have improved sensitivity (6dB) and improved efficiency (3dB) over a single driver. [/QUOTE]
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DIY & Tutorials
DIY For Audio
My sonosub research and questions
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