why does my car radio turn off?

letsgo

New member
i have an aftermarket pioneer radio in my ford explorer sport. i also have changed all the door speakers and added 2 1000 watt sub woofers and an amp. sometimes when i push a button on the radio it just lights up everything on the display and shuts off. is the speaker power too much for the radio? do i need a capacitor or a new alternator?
 
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