Sounds like overexcursion of the driver causing mechanical failure. I run mine into the ground daily with a saz1500 @1ohm, and it handles it flawlessly
I still cant believe this whole week will be in the low 80s for being winter in January. Our seasonal average is high enough for this time of year, which is 12-15`F below that.
I have plenty experience of them both in sealed and ported enclosures, but the ''Q'' and the ''bl'' are designed for different applications from each other
I understand what you are saying, theoretically it might work like that. But I would like a technical explination of why. I'll leave that one for Scott or Nick to speak of, as I relegate myself to hang back and watch