Have you checked the DSP crossover knobs?
In the Pioneer, check that the front speakers are configured to run full range and not crossed over to something like 80Hz.
The receiver does not "know" how to set gain levels to the amps. You adjust gain via the volume knob.
You can run MCACC to set the relative levels and distances between all of your speakers. Depending on the vintage of MCACC, it may also do some "room correction". The actives have been the first speaker I've ever used that did not require correction in any of the rooms I tried them in. It would be interesting to hear what your results are.
