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With an amplifier of that size the larger alternator will be a nessissity. You would also benifit from upgrading the charge wire to 4 guage and go directly from the alternator to the battery.

I run a streight 4 transistor amplifier, And running a 170 amp alternator and the lights still dim a little. Don't forget that you have to factor in a 10 to 15% drop in available current when the alternator gets hot.

[QUOTE="The Mad Scientist, post: 443843, member: 25459"] With an amplifier of that size the larger alternator will be a nessissity. You would also benifit from upgrading the charge wire to 4 guage and go directly from the alternator to the battery. I run a streight 4 transistor amplifier, And running a 170 amp alternator and the lights still dim a little. Don't forget that you have to factor in a 10 to 15% drop in available current when the alternator gets hot. [/QUOTE]

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