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<blockquote data-quote="Timo Beckman" data-source="post: 106145" data-attributes="member: 1173">Re: Endfire sub array under a stageSo i did some measurements on a end fired config of 6 USW1p subs which were set-up in a trianglish sort of array<a href="http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-002.png" target="_blank">http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-002.png</a>The mic in the back was very close due to lack of space so at larger distances in theory the cancels achieved should be deeper i think (do not know yet).The problem when using delay as pointed out is that there are a few deep cancels but it&#039;s not a constant reduction al over the operating range of the sub&#039;s .&nbsp; <a href="http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-0026.png" target="_blank">http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-0026.png</a>However when using all-pass filters you get a bit more control over the cancelation area in the back at a small reduction in frequency response in the higher frequencies of the operating range of the subs @ the front mic (past the 125Hz i have to cross them a bit high because i only have UPA1 and 2p&#039;s which have there x-over about 125Hz) . If i use the 1 and 2p together i can go to about 100Hz because of the coupling in the low end on the upa&#039;s&nbsp; <a href="http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-0051.png" target="_blank">http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-0051.png</a>Again the mic at the back was close due to lack of space but if i given the chance and enough space i&#039;ll post some results when/if i have time .(complete blog post :<a href="http://timobeckmangeluid.wordpress.com/2013/09/04/end-fired-sub-array-first-with-delay-then-with-2nd-order-all-pass-filters/" target="_blank">End fired sub array first with delay then with 2nd order all-pass filters | Timo&#039;s World all around the globe</a>)</blockquote>

[QUOTE="Timo Beckman, post: 106145, member: 1173"] Re: Endfire sub array under a stage So i did some measurements on a end fired config of 6 USW1p subs which were set-up in a trianglish sort of array [URL]http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-002.png[/URL] The mic in the back was very close due to lack of space so at larger distances [U]in theory[/U] the cancels achieved should be deeper i think (do not know yet). The problem when using delay as pointed out is that there are a few deep cancels but it's not a constant reduction al over the operating range of the sub's . [URL]http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-0026.png[/URL] However when using all-pass filters you get a bit more control over the cancelation area in the back at a small reduction in frequency response in the higher frequencies of the operating range of the subs @ the front mic (past the 125Hz i have to cross them a bit high because i only have UPA1 and 2p's which have there x-over about 125Hz) . If i use the 1 and 2p together i can go to about 100Hz because of the coupling in the low end on the upa's [URL]http://timobeckmangeluid.files.wordpress.com/2013/09/end-fired-0051.png[/URL] Again the mic at the back was close due to lack of space but if i given the chance and enough space i'll post some results when/if i have time . (complete blog post :[URL="http://timobeckmangeluid.wordpress.com/2013/09/04/end-fired-sub-array-first-with-delay-then-with-2nd-order-all-pass-filters/"]End fired sub array first with delay then with 2nd order all-pass filters | Timo's World all around the globe[/URL]) [/QUOTE]

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