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Junior Varsity
Question concerning "end fire subs"
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<blockquote data-quote="Matthew Knischewsky" data-source="post: 60474" data-attributes="member: 1109"><p>Re: Question concerning "end fire subs"</p><p></p><p>The first time I deployed an end fire sub array I expected complete cancellation to the rear. The event was indoors but I had some concerns about keeping the residents across the street happy (~65' away from where the subs were). So I went about placing my array, dialing in the delays, making some measurements but the cancellation wasn't near what was predicted. So I check polarity, re check my delay times, make more measurements, re tweak the delays, play with level, still not great. Doors are opening soon so I decide to just use the predicted delay times, they would have to be good enough. Soon the event starts and sure enough I stand across the street and you would hardly know there was a party with DJs and lots of bass on the dance floor. Go to the other end of the building and it sounds like the steel siding is ready to vibrate off the building.</p><p></p><p>What I took away from this experience was that it takes a fair amount of space for the cardioid pattern to fully develop and it re-inforced for me the the unpredictable nature of walls or other boundaries where bass is concerned. My array was 4 EAW SB528 standing on end spaced 4' from grille to grille. </p><p></p><p>Matt</p><p></p><p>(edit clarity)</p></blockquote><p></p>
[QUOTE="Matthew Knischewsky, post: 60474, member: 1109"] Re: Question concerning "end fire subs" The first time I deployed an end fire sub array I expected complete cancellation to the rear. The event was indoors but I had some concerns about keeping the residents across the street happy (~65' away from where the subs were). So I went about placing my array, dialing in the delays, making some measurements but the cancellation wasn't near what was predicted. So I check polarity, re check my delay times, make more measurements, re tweak the delays, play with level, still not great. Doors are opening soon so I decide to just use the predicted delay times, they would have to be good enough. Soon the event starts and sure enough I stand across the street and you would hardly know there was a party with DJs and lots of bass on the dance floor. Go to the other end of the building and it sounds like the steel siding is ready to vibrate off the building. What I took away from this experience was that it takes a fair amount of space for the cardioid pattern to fully develop and it re-inforced for me the the unpredictable nature of walls or other boundaries where bass is concerned. My array was 4 EAW SB528 standing on end spaced 4' from grille to grille. Matt (edit clarity) [/QUOTE]
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