Originally Posted By: Ian
J.B.

It is very important to get the SPL of each one exact. With careful set up you can get them within fractions of a decibel. As SirQuack mentioned the positioning can also play a roll so if the results are close the positions need to be exchanged and the test repeated to ensure your results do not change.


what i would like to know is what fraction of a decibel are those speakers usually adjusted to.