I'd like to match the levels of two amps with a multimeter, so that they both produce the same volume when using the same speakers. For my needs, testing with a simple test tone (like a 400Hz sine wave) is fine.
Do I just measure the AC voltage from the speaker terminals? With a speaker load attached or can it work also without?
Would measuring the current be useful?
And while I'm at it, I would also like to know the power that is being sent to the speakers. Can I just do voltage squared, divided by resistance (both measured at the speaker during playback)?
Do I just measure the AC voltage from the speaker terminals? With a speaker load attached or can it work also without?
Would measuring the current be useful?
And while I'm at it, I would also like to know the power that is being sent to the speakers. Can I just do voltage squared, divided by resistance (both measured at the speaker during playback)?