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Low Earth Orbit
DIY Audio
15" hornloaded coax
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<blockquote data-quote="Stef Smits" data-source="post: 209242" data-attributes="member: 11637"><p>Maybe nice to share some stuff I found out recently.</p><p></p><p>With my new setup I'm currently using a sort of D&B C7 top with hybrid subs underneath (more like TSE sub, but a bit bigger).</p><p>Last weekend I had some time to do some testing, and a bit of measuring.</p><p>I have only one screenshot available at this moment (I was stupid enough to NOT save al the data).</p><p></p><p><img src="http://i63.tinypic.com/sg72hx.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p>There is clearly some trouble starting at 600 Hz with also three phase wraps.</p><p>My first thought was reflections coming back from the rather big XR1464C horn, and this was also backed up at another forum.</p><p>Also to be clear, measuring was done outside, top cabinet stacked on two subs, and measuring distance was about 2m.</p><p></p><p><strong>So now I have about two options:</strong></p><p>-Add some sort of foam behind the horn to minimise the reflections.</p><p>-Or use a different driver (BMS 4554 now) to cross lower. Current crossover is at 1200 Hz.</p><p></p><p>I'm going to start first with placing some foam behrind the driver, and see what the results are.</p></blockquote><p></p>
[QUOTE="Stef Smits, post: 209242, member: 11637"] Maybe nice to share some stuff I found out recently. With my new setup I'm currently using a sort of D&B C7 top with hybrid subs underneath (more like TSE sub, but a bit bigger). Last weekend I had some time to do some testing, and a bit of measuring. I have only one screenshot available at this moment (I was stupid enough to NOT save al the data). [IMG]http://i63.tinypic.com/sg72hx.jpg[/IMG] There is clearly some trouble starting at 600 Hz with also three phase wraps. My first thought was reflections coming back from the rather big XR1464C horn, and this was also backed up at another forum. Also to be clear, measuring was done outside, top cabinet stacked on two subs, and measuring distance was about 2m. [B]So now I have about two options:[/B] -Add some sort of foam behind the horn to minimise the reflections. -Or use a different driver (BMS 4554 now) to cross lower. Current crossover is at 1200 Hz. I'm going to start first with placing some foam behrind the driver, and see what the results are. [/QUOTE]
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