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<blockquote data-quote="Peter Morris" data-source="post: 208625" data-attributes="member: 652"><p>That actually looks great for a non-symmetrical double 12" + ,horn. There is no perfect solution just the best compromise. The trick is to get the two 12" drivers to play together without phase cancellation (vertically between the two 12's) and then integrate the HF horn without major off axis issues at the crossover point.</p><p></p><p>Have a look at these two boxes below ... note the improvement in the newer box's vertical directivity with the lower HF crossover frequency.</p><p></p><p>If you go too low with the crossover point you will get the horn's pattern control collapsing and becoming too wide and you will also put too much strain on the HF driver ...</p><p></p><p>I suspect with 2 or 3 boxes arrayed you <u>may</u> (don't know just a guess<u>)</u> run out of HF power. If you could raise the crossover a bit, say 700Hz it may still work ???? and you will have a little more HF horse power.</p><p></p><p><a href="http://www.rcf.it/c/document_library/get_file?p_l_id=249233&folderId=22490&name=DLFE-3110.pdf" target="_blank">http://www.rcf.it/c/document_library/get_file?p_l_id=249233&folderId=22490&name=DLFE-3110.pdf</a></p><p></p><p><a href="http://www.rcf.it/c/document_library/get_file?p_l_id=16359553&folderId=22490&name=DLFE-29707.pdf" target="_blank">http://www.rcf.it/c/document_library/get_file?p_l_id=16359553&folderId=22490&name=DLFE-29707.pdf</a></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 208625, member: 652"] That actually looks great for a non-symmetrical double 12" + ,horn. There is no perfect solution just the best compromise. The trick is to get the two 12" drivers to play together without phase cancellation (vertically between the two 12's) and then integrate the HF horn without major off axis issues at the crossover point. Have a look at these two boxes below ... note the improvement in the newer box's vertical directivity with the lower HF crossover frequency. If you go too low with the crossover point you will get the horn's pattern control collapsing and becoming too wide and you will also put too much strain on the HF driver ... I suspect with 2 or 3 boxes arrayed you [U]may[/U] (don't know just a guess[U])[/U] run out of HF power. If you could raise the crossover a bit, say 700Hz it may still work ???? and you will have a little more HF horse power. [URL]http://www.rcf.it/c/document_library/get_file?p_l_id=249233&folderId=22490&name=DLFE-3110.pdf[/URL] [URL]http://www.rcf.it/c/document_library/get_file?p_l_id=16359553&folderId=22490&name=DLFE-29707.pdf[/URL] [/QUOTE]
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