Using external power amp with Pioneer VSX-LX503 to Bi-Amp Fronts
I know that LX503 is a 9.2 channel receiver. I was wondering if LX503 can be used in full 7.2.2 configuration, and still do bi-amping of main front channels by making use of Front pre-outs and an external power amplifier.
This is what I was thinking: First, start with configuring the LX503 for a typical 7.2.2 channel system (F-L, C, F-R, S-L, S-R, R-L, R-R, FH-L, FH-R plus two powered subs attached to two sub-pre-outs). And then...change it by powering the two front channels by routing pre-out for Front L + R to an external power amplifier, and then bi-amp the F-L and F-R speakers by making use of outputs from the external power amplifier. I have a feeling that this setup would work. Can you please confirm it?
Question-2: Further to the above: if I use an external power amplifier to drive the two main channels (i.e. Front Left and Front Right), would I still be able to take advantage of advanced functionality offered by the receiver such as Room Calibration, Standing Wave Elimination, etc.? Or, would using an external amplifier to power the two front main channels would totally mess up the sonic magic that this receiver may otherwise be able to do by controlling amplification of all 9 channels through its own circuitry? In other words, would I mess anything up (sounds effects wise--this setup is mainly for watching movies in a dedicated home theatre) by going this route?