[Completed Beta] Automatic timing alignment for Main Speakers and Subwoofer

It's possible that there is a phase anomaly between sub and speakers so the WiiM algorithm is delaying the speakers more because of this. An 8ms delay is 'virtually' placing your main speakers 2.7m* behind the sub so that the sound peaks hit the microphone concurrently. It might be worth reversing phase on the sub and repeating the measurement.

I will try to explain using these examples from old measurements taken from my system using an Earthworks M23 Mic

The top image is the initial impulse peak of the main speakers (37ms)
The Lower image uses the initial impulse peak of the sub (41.6ms) as shown by the first dotted vertical line.
So the delay to the main speakers needs to be 41.6 - 37 = 4.6ms

However if the phase on the sub was reversed 180deg then that image would be upside down & the large dip would then be the initial peak at 59ms (second dotted line) so the delay required for the main speakers would now be 59 - 37 = 22ms.
Neither speakers nor sub have changed position in the room but a change in phase changes the point in time that the signal arrives.


In your case I suspect that the WiiM algorithm has made the 'correct' adjustment so you do not need to worry!

View attachment 13301
View attachment 13302

(*sound travels at 0.343 meters per millisecond so 8ms = 2.744m)
Well, I switched the phase to 180 degrees and still get the same 8ms delay.
 
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