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<blockquote data-quote="Ivan Beaver" data-source="post: 122457" data-attributes="member: 30">Re: Stair Cardioid Subwoofer ArrayIt is amazing how quickly a simple 2 mic measurement can save all kinds of time and guesswork.Simply put a mic a decent distance in front and another a decent distance in back of the &quot;array&quot;.&nbsp; Then save a trace of each and adjust delay until you get the maximum output out front (including best freq response) and the maximum cancellation at the freq of interest (many people don&#039;t realize that directional sub cancellation is freq dependent-and you may not be able to cover the whole sub range-so you have to choose what is most important for a particular application).I have run into many cases people want to &quot;discuss&quot; what is wrong-while a simple measurement can often point out the problem real quick. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" /> and more accurately than simply guessing.Measurement trumps prediction every time.</blockquote>

[QUOTE="Ivan Beaver, post: 122457, member: 30"] Re: Stair Cardioid Subwoofer Array It is amazing how quickly a simple 2 mic measurement can save all kinds of time and guesswork. Simply put a mic a decent distance in front and another a decent distance in back of the "array". Then save a trace of each and adjust delay until you get the maximum output out front (including best freq response) and the maximum cancellation at the freq of interest (many people don't realize that directional sub cancellation is freq dependent-and you may not be able to cover the whole sub range-so you have to choose what is most important for a particular application). I have run into many cases people want to "discuss" what is wrong-while a simple measurement can often point out the problem real quick. :) and more accurately than simply guessing. Measurement trumps prediction every time. [/QUOTE]

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