I don't know the answer to your question. I do know that polarity is important. Speakers move air outwards when wired correctly. If the polarity is reversed the speakers is drawn inwards. This can eventually destroy a speaker. The moving parts of the speaker essentially bottom out on the frame work. The higher the volumes and lower the frequencies the greater chance of damage. For higher frequencies, you create a situation know as cancellation. The sound will tend to be hollow. You will most probably think that the balance or fade is off. Knob adjustments will not correct this condition.
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1997 Porsche Boxster
2018 Porsche Macan
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