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The display shows clipping with the waveform.
However the general over driven nature of the piece could be running the woofers into their stops, but that would be more like a click than a buzz, but might be a buzz after the unit was damaged.
You might also have a small separation where the cone meets the voicecoil.I would run some 80-120 hz tones and measure and listen for any problems specific to the bass range rather than trying to troubleshoot with fullrange music.
So you don't hear any static or crackling? I think I know what you're talking about a rattle, it sounds like something loose around a kettle drum or part of the drum sound itself. I heard that, but that's not the crackling I was hearing.
I didn't hear any static or crackling - but I just have monitors with a 10" sub. I don't have any test equipment. I just listened closely. Sounds pretty nice and clear to me.
What I did find, that I didn't anticipate (but in retrospect should have) is how NOT flat the response is. I had the sequence playing 5 sec intervals at 5Hz increments. It started rolling off at about 65Hz fairly smoothly, at 50Hz there seemed to be a slight hump, then at 40 and 35 the room started shaking a good amount and it appeared to be louder and then it settled down at 30 and 20 was inaudible. Time for some bass traps?
I just looked it up. The TBI Millenia MG3 is only 32 wpc. That tiny amp must be clipping.
So your room is about 15'x20' with 8' ceilings?
I hadn't thought of that. That must be it! I'm running the TBI off 12V! I thought the woofer had a sensitivity in the low 90's, but the specs on the SEAS website says it's 88. The AMTs are super sensitive, over 100dB, so I have to really crank down the high end on the crossover. My Dodd amp that's driving the AMTs is only 15wpc, but even so maybe I need more power for the low end. Does that sound right? I thought the active crossover would compensate for the low watts. I think you hit it on the head charmerci, I'm going to play around a bit and report back. THANKS for all the great feedback!
Hey, pretty good! About 15'x24'x8'. How did you get so close? I also have 6" x 4" beams that cross the flat ceiling every 3.5' and sometimes I wonder if that's not setting up some kind of standing wave exaggerating the high end a bit. Any thoughts on that?
You can see the first reflection point by using said spouse to hold a mirror on the side wall while you sit in the listening position (with a beer) and have her move up and down the length of the wall until you can see the speakers in the mirror. Even when you see the spot, make sure to have her move back and forth a few more times just to "get it perfect", spouses just love this kind of exercise and really can't get enough of it. After you get divorced, you can put the speakers any damn place you want. So ends lesson one on room acoustics.
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