Whatever... Wire your loudspeakers the way you want to...
Oh come-on, please? You know this stuff backwards-and-forwards!! Did I mis-read the schematic? "Factory had them out-of-phase - that is LF was (-), while MF, HF, and UHF were all (+) - same configuration as the 4345 (3145)." No?

I'm intrigued by your suggestion.