Hi! I intend to buy an spl meter, but in the meantime I'd like to know how loud is the reference level. I have a Yamaha rx-v530 amp, and maybe another owner of the same gear knows at which level of the amp he gets the reference. I know that it also depends on the signal and the sensibility of speakers, but I only want a rough estimate. BTW, my speakers are rated to be 91 dB, although I wouldn't believe it much... edit: I have just realized that also room size is an issue... There is so much in the game!! Well, it is about 6x4 square meters, and about 2.5 meter height.