Start of Sub Impulse Response

Calypso

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Can someone point out where the impulse response for the sub starts? I am trying to align to my timing reference (left speaker)

Thanks.
 

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sm52

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L and R are tuned together, but the sub did not have time to join them. Because he didn't have enough cells. To coordinate it with the main speakers, the sub needs to be moved about 12 ms earlier.
 

Calypso

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L and R are tuned together, but the sub did not have time to join them. Because he didn't have enough cells. To coordinate it with the main speakers, the sub needs to be moved about 12 ms earlier.
Okay, will try it. Did you obtain the 12ms from the graph?
 

Calypso

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Yes. It is approximately. To find out this time more accurately, I need an mdat file with three measurements, as in the picture.
Here you go. Lower scale of the impulse is micro-seconds, so was your 12 estimate above in milli-seconds or micro seconds? Thanks.
 

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sm52

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The main speakers play too far down and the sub plays too far up. But, if you keep everything in mind as it is, then the sub should be done earlier by 7.34 ms (0.00734 s). I did it in the fourth measurement.
 

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Calypso

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The main speakers play too far down and the sub plays too far up. But, if you keep everything in mind as it is, then the sub should be done earlier by 7.34 ms (0.00734 s). I did it in the fourth measurement.
I thought that one can only delay, so how does one make the sub earlier by 7.34 micro-seconds?
 

sm52

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I thought that one can only delay, so how does one make the sub earlier by 7.34 micro-seconds?
You have mini-DSP Flex. If you run the main speakers through it, you can delay them by 7.34 milliseconds.
 
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Calypso

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You have mini-DSP Flex. If you run the main speakers through it, you can delay them by 7.34 milliseconds.
I do have the MiniDSP Flex. Will enter the delay and remeasure, thanks.
 
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