How Much Current Does A Car Stereo Draw. Powering Only the Speakers. A typical car amplifier requires anywhere from 10-30 amps.
If you want to power only the tweeters or speakers a 2-channel amplifier will be good enough. Efficiency in amplifier engineering a ratio of the amount of power produced by an amplifier to the amount of power put into it. 05 amps at 12 volts is 6 watts which is not a lot.
Car stereos run on 12 volts DC electric current but you can connect a car stereo to 110 volts AC and make it work inside your home.
The acceptable current draw should be around 003Amps. I had a problem with my 99 Miata needing frequent jump starts even though the battery is only about 18 months old. For example if it has 2 35 amp fuses then 70 amps is a pretty good guess for how much current it will draw. The 78amp draw at rest shows this is nothing to do with charging but instead shows something is just drawing too much current.
