Dragging this back again to the original topic -- the Dynasty PROAUDIO WSA-5RP-PLUS devices.
It turns out I have a problem with those which is fairly significant and did not notice. I have two speakers hooked up for SL/SR but also a subwoofer.
When I send very low tone to the sub it's fine, but if I send a frequence sweep to it, it ALSO comes out of the SL/SR speakers.
Just to definitively ensure it's not from the AVR, I disconnected the pre-amp output to SL/SR so the transmitted had nothing but the subwoofer connected. Running the Audyssey XT32 sweep to the subwoofer comes out the SL/SR speakers.
It's like they have some high pass crossover that's sending the mid-and-above range to the other speakers.
I moved the sub to the front and off the receiver, and it works fine.
So... big time fail for these. I did not notice before, though I am not quite sure how, but mostly I think because when listening for the sub I would send it very low frequencies, which work fine (or more precisely, if they came out of the Sl/SR also, I did not actually notice).
I've written the manufacturer, but there are no adjustments (well, nothing relevant), no online menu, etc. These should be discrete channels going through, but... not.
Just FYI to anyone considering them.