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Double 10 and Horn
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<blockquote data-quote="Joris Wijgerde" data-source="post: 213580" data-attributes="member: 13728"><p>HI Peter,</p><p></p><p>Thank you for your explanation.</p><p></p><p>The relation between mouth size and directivity does explain a lot. I've noticed something similar when slot loading woofers, which seems to push the narrowing in directivity up higher in frequency but seems to be limited by the bandpass effect it creates.</p><p></p><p>In my case I have 8 pieces of the Fane Pro 300 driver which I would like to use and a bms 4592nd coaxial <a href="http://i.viglink.com/?key=5cf16c336e47fafee363278702686ee9&insertId=f44408878c7fefc2&type=H&exp=60%3ACI1C55A%3A9&libId=k6iw9qq401012yw0000MAolvqi3b46xv1&loc=https%3A%2F%2Fsoundforums.net%2Fcommunity%2Fthreads%2Fdouble-10-and-horn.13224%2Fpage-7%23post-213577&v=1&iid=f44408878c7fefc2&out=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00IPR2NPU&title=Double%2010%20and%20Horn%20%7C%20Sound%20Forums&txt=%3Cspan%3Ecompression%20%3C%2Fspan%3E%3Cspan%3Edriver%3C%2Fspan%3E" target="_blank">compression driver</a> on the 2236 horn (lower cutoff of 500Hz, 60x40, 498 mm x 348 mm) which I have been experimenting with.</p><p></p><p>As you can see (and of course this is obvious when testing this combination) the horn is very big compared to the drivers which doesn't allow for a layout like the one you posted. I have so far tried to put 2 woofers side by side (which more of less matches the width of the horn) with good results, however I was wondering whether the size of the horn would permit me to put the woofers more towards the back of a trap cabinet, having a horn/waveguide whose mouth is as wide as the mouth of the CD horn.</p><p></p><p>The alternative would be to ditch either the horns and go for something like the xt1464 with a B&C464 (which would be ok for me since is actually 1/3 cheaper than the bms where I live) or pick a bigger woofer and cross lower (my least favorite option).</p><p></p><p>A second reason for having the coverage extend from the entire width of the baffle (if this makes any sense) is that these cabinets will be arrayed horizontally, playing from 180hz. I was planning to build trap cabinets which match the nominal directivity of the CD horn (30° in this case).</p><p></p><p>Any advice is welcome</p></blockquote><p></p>
[QUOTE="Joris Wijgerde, post: 213580, member: 13728"] HI Peter, Thank you for your explanation. The relation between mouth size and directivity does explain a lot. I've noticed something similar when slot loading woofers, which seems to push the narrowing in directivity up higher in frequency but seems to be limited by the bandpass effect it creates. In my case I have 8 pieces of the Fane Pro 300 driver which I would like to use and a bms 4592nd coaxial [URL='http://i.viglink.com/?key=5cf16c336e47fafee363278702686ee9&insertId=f44408878c7fefc2&type=H&exp=60%3ACI1C55A%3A9&libId=k6iw9qq401012yw0000MAolvqi3b46xv1&loc=https%3A%2F%2Fsoundforums.net%2Fcommunity%2Fthreads%2Fdouble-10-and-horn.13224%2Fpage-7%23post-213577&v=1&iid=f44408878c7fefc2&out=https%3A%2F%2Fwww.amazon.com%2Fdp%2FB00IPR2NPU&title=Double%2010%20and%20Horn%20%7C%20Sound%20Forums&txt=%3Cspan%3Ecompression%20%3C%2Fspan%3E%3Cspan%3Edriver%3C%2Fspan%3E']compression driver[/URL] on the 2236 horn (lower cutoff of 500Hz, 60x40, 498 mm x 348 mm) which I have been experimenting with. As you can see (and of course this is obvious when testing this combination) the horn is very big compared to the drivers which doesn't allow for a layout like the one you posted. I have so far tried to put 2 woofers side by side (which more of less matches the width of the horn) with good results, however I was wondering whether the size of the horn would permit me to put the woofers more towards the back of a trap cabinet, having a horn/waveguide whose mouth is as wide as the mouth of the CD horn. The alternative would be to ditch either the horns and go for something like the xt1464 with a B&C464 (which would be ok for me since is actually 1/3 cheaper than the bms where I live) or pick a bigger woofer and cross lower (my least favorite option). A second reason for having the coverage extend from the entire width of the baffle (if this makes any sense) is that these cabinets will be arrayed horizontally, playing from 180hz. I was planning to build trap cabinets which match the nominal directivity of the CD horn (30° in this case). Any advice is welcome [/QUOTE]
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