standing wave?

David French wrote:

I wouldn't trust those measurements. If you really want to get to the bottom of this, pick up a cheap Nady CM-100 or an equally cheap Behringer ECM8000.

yeah im gonna do that, but this takes a few days.. and ive only measured for comparison now. hmm any ideas about this behaviour? or should i wait until new measurments? what i forgot to say, my inner walls arent actually the original walls, just drywall (1/2" thick) on woodframing. but i stuffed a lot of glasswool behind it.(up to the ceiling of course!) could this be the problem that the drywall is perhaps acoustically transparent for those frequencies or am i talking bullshit? thats just what came in my mind at first.. thanks anyways!

Glad to hear you're going to pick up a measurement mic. Let's wait for that. I'd like you to run a test tone that I will provide though your system so I can analyze the data myself on familiar software. I could be more helpful that way.

ok that sounds good to me! i just ordered the behringer (no nady available in germany, huh?), but i dont expect it to be here before tuesday. but i think until then i can get up another speakerset for comparison, and perhaps get my couch (ok i just wanted to say that ;) ).

Cool, looking forward to it.

cheers our postal service is so damn slow, you wont believe it :roll: well, i expect the mic to be here by tomorrow.. as far as im busy the whole day, i will get to make the measurements in the evening or perhaps on thursday. but you could send me your test files, so i have them when its getting interesting ;)

ok, the mic is here and my measures (with rmaa) didnt point out so much difference.. i hope your test files will be more helpful :? (oh, just to mention, i think the mic doesnt sound bad at all, i think ill use it on a-guitars perhaps ;)) the first graph are some very old bose speakers ("302", 2-way with some 8" woofers). the second one are my samson resolv 65a.