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DIY & Tutorials
DIY For Audio
MY DIY Sub, I'm actually taking the plunge
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<blockquote data-quote="Norval" data-source="post: 4941" data-attributes="member: 62"><p>Hi Spanners</p><p>I bought some grill clips from TV Audio some time ago. But I don't know if they still sell them, but Alex might know.</p><p></p><p>I use that "batting", those white stuff that is used in duvets, as damping inside speaker cabinets. Its a little more convenient to work with than fibreclass. Used by most commercial manufacturers nowadays as well.</p><p></p><p>Its not so easy to explain box tuning here. In short, a box is tuned to a certain resonance frequency by means of a port. Its a relation between the box size, port diameter and port length. The box size and resonance is calculated using the Thiell/Small parameters of the driver.</p><p></p><p>Its for a start easier to build a seald box, but they rarely have a very low cut off freq., unless the box is very large or u use active equalization. </p><p></p><p>Sealed boxes and transmission lines usaully need a fair amount of stuffing, where as well desinged reflex boxes needs minimal stuffing. </p><p></p><p>Best is to get a speaker box modeling program and use a speaker with available parameters or get someone to measure them for you.</p></blockquote><p></p>
[QUOTE="Norval, post: 4941, member: 62"] Hi Spanners I bought some grill clips from TV Audio some time ago. But I don't know if they still sell them, but Alex might know. I use that "batting", those white stuff that is used in duvets, as damping inside speaker cabinets. Its a little more convenient to work with than fibreclass. Used by most commercial manufacturers nowadays as well. Its not so easy to explain box tuning here. In short, a box is tuned to a certain resonance frequency by means of a port. Its a relation between the box size, port diameter and port length. The box size and resonance is calculated using the Thiell/Small parameters of the driver. Its for a start easier to build a seald box, but they rarely have a very low cut off freq., unless the box is very large or u use active equalization. Sealed boxes and transmission lines usaully need a fair amount of stuffing, where as well desinged reflex boxes needs minimal stuffing. Best is to get a speaker box modeling program and use a speaker with available parameters or get someone to measure them for you. [/QUOTE]
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DIY & Tutorials
DIY For Audio
MY DIY Sub, I'm actually taking the plunge
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