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<blockquote data-quote="gstokes" data-source="post: 8370218" data-attributes="member: 660947">hmm, you kind of answered your own question with the question..If you&#039;re not willing and able to upgrade the alternator then you need to downgrade your system goals, with a 2000 watt amplifier it would be drawing 144 amps and that&#039;s just for your amplifier, add another 50 amps for your ignition, fuel injection, wipers, headlights, etc..A 200 amp alternator would be the smallest you could use.Bump system power up to 3000 watts and now it&#039;s drawing 217 amps not including the ignition, fuel injection, etc etc..It doesn&#039;t matter how big or how many batteries you have if the alternator can&#039;t supply the required current flow, with your stock 110 amp alternator your electrical system could hypothetically support a 900 - 1000 watt sound system, be realistic with your goals and design the system around the existing infrastructure..Don&#039;t buy a 3000 watt amp then scratch your head and wonder why it&#039;s not making rated power with the 110 amp alternator..Volts x Amps = Watts, Watts / Volts = required current, when the engine is running you have 13.8 Volts so do the math just keep in mind the alternator has to run much more than just the sound system..</blockquote>

[QUOTE="gstokes, post: 8370218, member: 660947"] hmm, you kind of answered your own question with the question.. If you're not willing and able to upgrade the alternator then you need to downgrade your system goals, with a 2000 watt amplifier it would be drawing 144 amps and that's just for your amplifier, add another 50 amps for your ignition, fuel injection, wipers, headlights, etc.. A 200 amp alternator would be the smallest you could use. Bump system power up to 3000 watts and now it's drawing 217 amps not including the ignition, fuel injection, etc etc.. It doesn't matter how big or how many batteries you have if the alternator can't supply the required current flow, with your stock 110 amp alternator your electrical system could hypothetically support a 900 - 1000 watt sound system, be realistic with your goals and design the system around the existing infrastructure.. Don't buy a 3000 watt amp then scratch your head and wonder why it's not making rated power with the 110 amp alternator.. Volts x Amps = Watts, Watts / Volts = required current, when the engine is running you have 13.8 Volts so do the math just keep in mind the alternator has to run much more than just the sound system.. [/QUOTE]

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