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I have a 700 watt subs and wondering if I use 2800 watt amp

Solution
You can but if the power ratings are accurate you will have to be careful. With that much excessive power you can blow the woofer very very easily.
Power ratings on amps and woofers can be a wildly off. Peak power ratings are completely useless.
You can but if the power ratings are accurate you will have to be careful. With that much excessive power you can blow the woofer very very easily.
Power ratings on amps and woofers can be a wildly off. Peak power ratings are completely useless.
 
Solution