Re: 20mV from Maxima stock Bose speakers ?
20mV doesn't seem too unreasonable as a DC offset from the HU. possibly you are measuring DC-V, depending on implementation, the DC offset may not change with volume.
short of that, i would guess the speakers are not receiving a signal.
the HU provides a voltage signal, so the speaker's reactance, which is in parallel to the LoC, should not largely affect the LoC.
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