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B&C ME464
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<blockquote data-quote="Peter Morris" data-source="post: 214506" data-attributes="member: 652"><p>If you need to separate the tops from the subs when you flying the system, generally its consider that 100Hz is a bit high and most manufactures try for a 80Hz crossover.</p><p></p><p>In this case it’s a DIY forum so many people will just be ground stacking; the problem here is getting the horn up high especially if the box is large and heavy. If we used an MTM design like the PM90/60 it gets even harder to get the horn up high enough.</p><p></p><p>Perhaps the answer is separate horn and low mid enclosures like Renkus Heinz did with their ST range <a href="https://www.renkus-heinz.com/st7m" target="_blank">https://www.renkus-heinz.com/st7m</a> <a href="https://www.renkus-heinz.com/st5l" target="_blank">https://www.renkus-heinz.com/st5l</a></p><p></p><p>If we aim for a 100 or even 120Hz cross to the subs you may not need 4 x 12’ or 2 to 4 x 15” low frequency drivers to keep up to one dual compression driver operating from 400 – 20KHz.</p><p></p><p>Also you may not need the horn to go as low 400Hz, using the 12” driver up to 650 – 800Hz … then you can use a smaller HF horn, and we are more or less back to the PM90 ... which BTW would be nice if there was an option for a slightly large horn than the RCF HF950.</p><p></p><p>Still not sure what to do with this horn for PA applications where size and weight are often an issue <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite24" alt=":unsure:" title="Unsure :unsure:" loading="lazy" data-shortname=":unsure:" /></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 214506, member: 652"] If you need to separate the tops from the subs when you flying the system, generally its consider that 100Hz is a bit high and most manufactures try for a 80Hz crossover. In this case it’s a DIY forum so many people will just be ground stacking; the problem here is getting the horn up high especially if the box is large and heavy. If we used an MTM design like the PM90/60 it gets even harder to get the horn up high enough. Perhaps the answer is separate horn and low mid enclosures like Renkus Heinz did with their ST range [URL]https://www.renkus-heinz.com/st7m[/URL] [URL]https://www.renkus-heinz.com/st5l[/URL] If we aim for a 100 or even 120Hz cross to the subs you may not need 4 x 12’ or 2 to 4 x 15” low frequency drivers to keep up to one dual compression driver operating from 400 – 20KHz. Also you may not need the horn to go as low 400Hz, using the 12” driver up to 650 – 800Hz … then you can use a smaller HF horn, and we are more or less back to the PM90 ... which BTW would be nice if there was an option for a slightly large horn than the RCF HF950. Still not sure what to do with this horn for PA applications where size and weight are often an issue :unsure: [/QUOTE]
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