Civic Guy, while your method is based on electrical theory its not 100% reliable. It is a good rule of thumb but not 100%.
I didn't miss the point of what you were saying. I know that a lot of people don't want to spend the money on a fuse block plus additional fuses, so they use the inline fuse to protect their amplifers. I just didn't agree with your method of calculating power consumption. I don't agree with your method because it can be way off (see below).
The example I gave earlier about the 10,000 watt amplifer, the actual draw of that MTX amplifer is only around 400 Amps, but using your method I get 724 Amps which is way off.
Corvette Crazy, I agree with you. I would call the manufactuer of the amplifers and find out the specs. Just because they don't list them online doesn't mean that they don't still have them on record.
92 Bonneville SSEi - Stock - Remaining repairs needed due to neglect by previous owner - ABS/Trac, AC.
Mods so far: Maganflow High flow Cat, Rebuilt */C
Future Mods: Interior swap for Leath, High Output Altenator, Crazy system, Climate Control swap & Custom Exhaust/Intake.
98 Dodge Stratus - Wifes Daily Driver
92 Dodge Shadow - My Winter Beater