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How To Calculate Amplifier Output Wattage
How To Calculate Amplifier Output Wattage. The answer is quite simple. That relates to the volts and amps present on the input stage of the output transformer, which is what is sent to the output transformer from the power tubes (this is what /u/gicawg is referring to i believe)

Amplifiers can be marketed as 1,000 watts, or 1,000,000 watts. Then you can calculate the wattage of your amp. You will have to multiply the values of ampere and volts to get the benefit of watts.
Turn The Test Tone Off, Shut Your Amplifier Down, And Remove Your Multimeter’s Probes.
You need the resistance of the load, the frequency or frequency range, and time. While an amplifier can output x wattage to speakers, a speaker can take a variable amount of power before it pukes. The power in watts (p) 240 volts can be calculated.
This Is The Max Load At The Lowest Impedance That Is Your Amp Is Allowed To Run At.
If you want to measure the output wattage you need a dummy load, a test tone/signal source, and a way to measure total harmonic distortion at the output. These values will help you calculate the watts of the amplifier that is being run through the wires. The answer is quite simple.
So If The Voltage Reads 10Vpeak And Resistance / Inductance Is 4 Ohms It Would Be (10*10)/4 Or 25 Watts Peak.
Then you can calculate the wattage of your amp. Take the average test voltage, usually 13.4 or 13.8 volts. The higher the wattage is, the more power and output from the appliance.
It Takes Time To Heat Up The Voice Coil So It Can Handle More Power For A Moment.
This value is the wattage of your amplifier or speaker. Multiply it x 20, and you'll get your maximum wattage output at. Considering you gave almost no information about the type of amplifier, if it is a home (ac) or car (dc) amp, manufacturer, speaker(s), impedance, i can't even begin to guess the rating.
An Oscilloscope Is A Common Way To Monitor The Onset Of Distortion.
The power p in watts (w) is equal to the voltage v in volts (v) times the current i in amps (a): The real output power (watts) of an amplifier is the result of the maximum voltage and amperes available from the supply rails and the speaker impedance r. The power p in watts (w) is equal to the squared current i in amps (a) times the resistance r in ohms (ω):
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