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Audio Amplifier Power Meter
https://sound-au.com/project180.htm#:~:text=Audio%20Amplifier%20Power%20Meter%20%20%20Power%20%28max%29,%2043%20k%20%201%20more%20rows%20
Audio Wattmeter or Audio Power/Level Meter Circuit with ...
https://www.circuitstoday.com/audio-wattmeter-circuit
The resistor R2 must be twice the power of amp you are going to measure. To calibrate the device, Connect the output of the amplifier to port 1. Also, connect an AC voltmeter to port1. Set R1 fully off. That means full counter clockwise direction if wired conventionally. Adjust the output of the amp to read 20Volt rms on the voltmeter.
The PM-150 Audio Power Meter | Atlantic Quality Design ...
http://zerocapcable.com/?page_id=221
Audio Amplifier Power Meter
https://sound-au.com/project180.htm
Audio power amplifier measurements, Part 2
https://www.ti.com/lit/an/slyt128/slyt128.pdf
Application Specialist, Audio Amplifiers Regulated Power Supply V+ GND Inputs Balanced, ac-coupled Z = 100 k /185 pF Set Load Reference = R Internal Filter 10 Hz – 80 kHz Reading Meter = Crosstalk Data 1 = Analyzer Crosstalk Source 1 = Generator Frequency IN L – Outputs Unbalanced–Float Ch A ON Ch B Track Ch A 0 2 Z= Set Load Reference = R
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