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<blockquote data-quote="Ivan Beaver" data-source="post: 117700" data-attributes="member: 30">Re: Measurement QuestionMy approach for delays is basically this.First get a reference measurement from the center or main part of the main PA coverage.&nbsp;&nbsp; Everything else is referenced back to this response.Next measure in the delay coverage zone.&nbsp; See what is &quot;missing&quot; from the main PA.&nbsp; Put a highpass filter and eq the delay zone (main PA off) till it has a reasonably flat response.Find the delay time to the measurement location from the main PA (delay off), then turn off the main PA and find the delay time to delay (with no delay inserted in the DSP).Subtract the 2 and enter the difference in the DSP.Turn the main PA on and the delay and see how well they sum together.&nbsp; Adjust delay level and possibly eq as needed.Do not get to hung up on a single measurement position. Look at other positions in the coverage area.&nbsp; Remember that the distance is not going to change much from the main PA-but will change quite a bit from the delay speaker-so averages is what we are looking for here.You can only get it exact for a single seat-every other seat is going to be &quot;off&quot;.Measurement is the fine art of compromise and knowing what to &quot;ignore&quot; or what not to worry about.</blockquote>

[QUOTE="Ivan Beaver, post: 117700, member: 30"] Re: Measurement Question My approach for delays is basically this. First get a reference measurement from the center or main part of the main PA coverage. Everything else is referenced back to this response. Next measure in the delay coverage zone. See what is "missing" from the main PA. Put a highpass filter and eq the delay zone (main PA off) till it has a reasonably flat response. Find the delay time to the measurement location from the main PA (delay off), then turn off the main PA and find the delay time to delay (with no delay inserted in the DSP). Subtract the 2 and enter the difference in the DSP. Turn the main PA on and the delay and see how well they sum together. Adjust delay level and possibly eq as needed. Do not get to hung up on a single measurement position. Look at other positions in the coverage area. Remember that the distance is not going to change much from the main PA-but will change quite a bit from the delay speaker-so averages is what we are looking for here. You can only get it exact for a single seat-every other seat is going to be "off". Measurement is the fine art of compromise and knowing what to "ignore" or what not to worry about. [/QUOTE]

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