That really depends on what it is you are trying to do. If you want measurements that showing timing relative to a reference, turn it on. If you don't, turn it off.
As a general point, do not leave the input and output on default, set them to the option offered in the drop-down menu.
What are you trying to achieve by making measurements with a timing reference? If you can explain what you are trying to do it will be easier to understand whether the acoustic timing reference will help and, if so, how you should use it.
Alignment of which speakers? If it is the main speakers and/or surrounds, use a tape measure. If it is the sub then the acoustic timing reference will not be helpful as it cannot accurately determine delays for subwoofers. There are other threads on setting sub delays, such as this one.
It could be used for that, but it will take a lot longer than just using a tape measure as with Java drivers you can only send signals to the left or right channels so you will have to manually shift connections to the other channels somehow.
I measured all speakers and they all said -200mm delay (in the info panel), except for the left speaker (which is the reference channel). It read -750mm, but when re-measured it also said -200mm, re-measured again and back to -750mm, what could this be?
The reference channel should measure zero, it can't be delayed relative to itself. What frequency range did you measure over? Was any other channel playing at the same time?
Hi John when looking at the impulse and comparing 2 measurements, should I be looking at the biggest peak/negative or where it reaches 100.
Sometimes it doesn't reach 100
It seems to be sometimes a smaller negative peak then a larger negative peak is this normal?
I have looked back on other measurements and sometimes the biggest peak has gone from negative to positive with absolutely nothing changing other than possibly mics or postioing. Im confused why this could happen
Hi John e.g. Left Main is reference do I measure with Acoustic Timing (in preference's) ticked for all measurements including the reference (in this case Left Main)?
Yes, keep it selected for any measurement that you want to have timing for.
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