no sound from speakers only sub works

my car speakers slowly stopped working one at a time so i replaced all 4 speakers and now i have no sound at all but the sub still works i also replaced the head unit. so it has new speakers and new head unit. i thought it was the wiring so i ohm tested the wires and got .5-1 ohm each i connected the speaker directy to the head unit and still no sound. any other things i can try

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Are you currently running any amplifier which normally feeds your speakers? If so, when you connected the speakers directly to the head unit, was the amp also connected?

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