Maybe someone out there has a fix for this. Another very frustrating part of the journey for me.
Crossovers and hi/low pass filters are the most misunderstood part of the audio signal. My home theater looks at the subs and just 2 speakers in a stereo configuration for music in a different way than for movies. There is an LFE track for movies that is separate than the low frequencies that are going to the subs and at a different low pass range. Also the satellite speakers are not all the same size my surrounds have a different crossover points than the speakers in the ceiling for surround sound movies or surround sound music. I did have a JL Audio CL1 that was designed for just this problem but it actually added more low and high pass filters actually convoluting the entire system. Also the passive speakers have crossovers inside the cabinets to optimize the drivers. Also there is electronic DSP that creates optimized curves based on information from the way the speakers interact with the acoustics of the room, these curves will most likely not correspond exactly to all the other curves our modern systems have in them and of course the microphone doing the DSP corrections is not flat therefore adding false curves from the devise that is supposed to fix all of this mess.
Pure stereo systems are great but the future is surround sound I think the winner is clearly Dolby Atmos but having separate systems for stereo and movies, music and cinema is a bit silly. There are other aspects of the audio signal that change the curve like phase knobs, separate EQ on subs, different pass filter fall off rates, built in EQ on preamps, A to D converters, D to A converts, etc. There is no way to have a modern music playback system that is coherent in any respect unless you have a system with 1 A to D / D to A converter and a good sounding room requiring no DSP.
I have went out and recorded choirs with 1 very good stereo microphone (multi microphones always have phase issues by definition) and plugged that direct recording into an amp and listened on 2 speakers (also a phase issue). The result is like eating a fish that you just caught out of a mountain stream, it is an entirely different test and experience than when you buy fish at the market.
No only are audiophiles confused but manufactures are confused because playback systems are not made like your ears, in electronics it is very difficult to not introduce feedback into the circuit for efficiency sake, so even at the base of a simple amplifier circuit we are already swimming upstream. Interestingly enough Edison when he was recording to a wax disk moving the musicians farther and closer to get the volumes right (mixing) he didn't have any of these problems, maybe that was the last phase coherent recording.