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car amps and converting to rms/watts with a dmm?
ok i found some where where u take a dmm set to volts ac and connect to the sub and amp i did this i got 31volts ac and what thay say is take that and divide it my how many ohms ur sub is i have a dvc 4 ohm wired down to 2 ohms so i did that and take 31^2/2=480.5 is this right or am i missing something or is that whay im getinging for rms/watts or is there a nother way i can find out with a dmm other then this way that will tell me how much rms/watts im at
your calculation is correct,but the resistance ( ohms ) of a speaker changes as it plays. its called impedance rise. their are hundreds of articles discussing this.
http://www.google.com/search?aq=f&sourceid=chrome&ie=UTF-8&q=impedance+rise
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