So, picking up on page 6 when using a QSC Q-SYS CORE as the DSP processor (CORE 110c, in my case).
I've created a Q-SYS Component using the parameters supplied by "pos" (for QSYS by limiting to 4096 coefficients and using an additional filter block on the LF to finish the job) and exporting from rePhase. The only change I made was to raise the gain up to nominally "0" but kept the offset in level between the HF and LF sections.
In my component below, I show an LF and HF delay sections that are bypassed (just there in case alterations will be needed during final tuning (in a home-theatre environment). Likewise, the gain and HPF sections are bypassed. I'm not completely comfortable not putting a HPF below the point where the M2 is really playing but, for now, it is bypassed too.
My concern in looking at the results in QSYS is the phase response on the LF section starting at 400Hz. That just doesn't seem right to me.
Mind you, I don't have my listening room completed yet (home theatre) but the LF seems a bit "tubby" to me. The ports are tuned to 27Hz (using AC voltmeter/resistor method with generator). I'm wondering if I have the internal insulation right. Is there a consensus on what type, how thick and what surfaces should be covered? I have tried to find what people are doing and I've seen pictures were the middle 1/3, where the LF driver is was untreated but the upper/lower thirds are treated and other pictures have shown all surfaces BUT the front (driver mounting) board are treated. I have no doubt that POS has the answer. But with the number of pages in the two threads here that I know about, I'm not finding anything concrete other than a reference to POS recommending a particular type. So any advice there would be appreciated.
Thanks,
-Steve