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Originally Posted by navin  it is odd and one explanation might be that the power amp was drawing so much current that the HU's logic circuits were deprived and hence the HU restarted. |
Even I thought the same. But I am not sure about the exact technical reason. According to JBL specs the components have an impedance of 2 ohm. Now if the stock speakers had a higher impedance and the HU was matched to that, the new components may be drawing too much power from the HU leading to a reset.