I presume by saying measure that I should measure SPL with Pink noise ?
Unfortunately I dont have the option to go outdoor , I'll have to do with indoor measurements , wich I am sure is not going to be accuratedue because of room interaction but what should be done to get the best we can in this case ? Maybe use absorbing cushions on both sides of the speaker forming a 1 m corridor in front ? Puttin the Mic at a 1m distance at different heights ?
JP