I just ordered an older 300 series (375?). I am going to do some tests on it to see what sort of SPL I can manage for movies without distortion.
I am doing this for the avsforum community, such that I can better know how to explain to people what sort of performance you get out of a 300 series. It will be unscientific as I lack the testing equipment needed for a scientific test. My ears are not 20 year old ears either. But I still think I can glean some good info on the performance.
I actually have two setups I can test it on, one in the living room, and one in the bedroom. Living room is dual Emo subs, and B&W 600 series speakers. 7.1 config, but I will have to temporarily switch it to 5.1
The bedroom I think is all Audio Concepts speakers including the sub. Bedroom is 2.1.
I am thinking of using Tron Legacy as my test Blu-ray as it's very dynamic with tons of bass. I will probably test it with the default YPAO setting, then I will change all speakers to small as it usually fails to do and test again. I will use an SPL meter, and the only ears that are convenient, my own.
I hope to have this done in the next few weeks.