How many of you sound engineers out there in the live sound arena use third-octave RTA (real-time analysis) for EQing a venue? This is something I do quite a lot, but I have seen very little discussion of it in these forums. I'm not talking about tuning up your own studio, but about the times that you land up with your PA/recording gear in a new venue with only a few hours to set up before soundchecks and you need to know if you are in for any surprises on the night. * Have you found that RTA results give you good pointers as to how the gig will sound with real musicians? * Do you feel that you can do as good as or better job just using your ears rather than making the effort to do an RTA? * The venue is empty when you RTA (or soon would be!), but what allowances to you make for the frequency-dependent absorption effects of an audience? * Have you found makes of RTAs (dedicated or software-based) that are consistently better to use than others?