As your DBX PA2 is still in storage, Ol_mcdonald, I hope to tease, or perhaps warn you on it as I progress with my system.
It has many features we will never use and can only make trouble for the final sound, so I only use 3 tools:crossover, speaker alignment, and the Wizard.
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For my Khorn, I selected custom 2 way crossover with subwoofer and plugged in the standard 400 and 5000 hz crossover points.
What I love is dragging the circled L M H circles while playing my reference sounds till it sounds right, watching the bars below move to warn of something blowing up
I've adjust my alignment by ruler, not by measuring peaks or dips, I'll have time to fine tune down the road. Note this just covers the amount of delay required by a Khorn.
The Wizard surprised me by permitting adjustment to it's computed 8 PEQ's by again simply dragging the 1 thru 8 points to improve on the sound as listening to my sounds and watching the adjustment levels below move in sync to the new PEQ. This is the most useful tool as I really do not want to use the graphic equalizer or the 3 driver specific PEQ's. I also have no need for the Feedback Suppression, Limiter, or Compressor.
I've returned my Onkyo receivers to the office and bedroom with Ebay sourced Parasound HCA 600 and 750 power amps as replacements.
The Onkyo's were never offensive like current Sony and Pioneer receivers, but real power amps really isolate each instrument and note.
Now I cannot stop listening. I do everything on my sofa. I cannot leave it.
Even MP3's sound better, which I didn't expect, as well as web streams; https://www.twitch.tv/monstercat
And now that it sounds right, and the poly finish has cured, I'll be dissembling these speakers to quite literally (3M 1080) wrap up this project.
Thanks to all.