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Junior Varsity
Horn exit throat question ?
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<blockquote data-quote="Peter Morris" data-source="post: 55823" data-attributes="member: 652"><p>Re: Horn exit throat question ?</p><p></p><p></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">In most cases the difference between a 1.4” and 2" (assuming the same size diaphragm, compression ratio etc.) is that the “diecast aluminum housing” (see below) is added to change the exit from about 1.4” to 2”.</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-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">Most people think bigger is better, but it’s not. It’s much easier to achieve pattern control if you start with a smaller throat. JBL horns such as the 2380 or EV HP64 all start with a 2” throat but reduced it to a ¾”(approx) slot in the first couple of inches so that they can achieve reasonable pattern control. It’s much better not to have to do that.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">The reason we have 2” horns relates to the depth of the alnico magnet structures used in old compression drivers. They required an extra few inches of throat length.</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'"></span></span></span><span style="font-family: 'Calibri'"><span style="color: #000000">In terms of performance you must also consider the horn flare. <span style="font-size: 12px">The smaller throat just allows more options and less compromises with the flare design.</span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 55823, member: 652"] Re: Horn exit throat question ? [SIZE=3][COLOR=#000000][FONT=Calibri]In most cases the difference between a 1.4” and 2" (assuming the same size diaphragm, compression ratio etc.) is that the “diecast aluminum housing” (see below) is added to change the exit from about 1.4” to 2”. [/FONT][/COLOR][/SIZE] [FONT=Calibri][SIZE=3][COLOR=#000000]Most people think bigger is better, but it’s not. It’s much easier to achieve pattern control if you start with a smaller throat. JBL horns such as the 2380 or EV HP64 all start with a 2” throat but reduced it to a ¾”(approx) slot in the first couple of inches so that they can achieve reasonable pattern control. It’s much better not to have to do that. [/COLOR][/SIZE][/FONT] [SIZE=3][COLOR=#000000][FONT=Calibri]The reason we have 2” horns relates to the depth of the alnico magnet structures used in old compression drivers. They required an extra few inches of throat length. [/FONT][/COLOR][/SIZE][FONT=Calibri][COLOR=#000000]In terms of performance you must also consider the horn flare. [SIZE=3]The smaller throat just allows more options and less compromises with the flare design.[/SIZE][/COLOR][/FONT] [/QUOTE]
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