Audio Amplifier Output Measurement Using Different Types of Oscilloscopes

How to measure audio power output using either an analog or digital scope.

[waynecummings]

That was really good in that you broke it down to better basics. I'm still confused how to connect the function/sound generator to the amp, then how the oscilloscope is connected. This helped a little clear that up, but I'm now off to look for a basic video that walks me through basic connection step-by-step. Got any ideas anyone please?

[DavidBrown-ezjc]

Hey Ray so brilliantly done so I have Dlabs and uncle doug for valve stuff and now you wow this just gets better and better thank you so much I am absolutely buzzing David from uk

[Attic-Toy-Design]

That’s a lovely, simple and sincere video explaining clearly how to properly make the right thing from a sincere and professional electronic engineer. Like and subscribed straightaway. 3
Years old uploaded video!

[tjsogmc]

Brilliant use of the dummy load. I have a 500 watt resistor but never thought about the banana clips and the scope loops. I'm going to make one like yours right away! Thanks for sharing.

[Hr.ldenberg]

Deutsch, German: endlich mal jemand der genau versteht wie es funktioniert.
Bisher war noch niemand auf YouTube in der Lage, es so darzustellen wie er es gemacht hat.
Man braucht nur ein 1000 Hz Sinussignal, einen Lastwiderstand und ein Oszilloskop um die sinusleistung zu messen‼️‼️
Mit dem Taschenrechner ermittelt man den Rest....
Great Job, well done..
I do it since 40 jears like this! Greatings from Bremen, the Home of Becks Beer🙋🍺

[Warclock]

Thanks, I was looking how to calculate the watt and this formula gave exactly what I have expected.

[capricorn]

Thank you. You makes everything looks simple to understand !

[bernardzertuche]

Thank you for your video
Excellent tutorial
Where can I find the heat sink you have on this video

[TheSoundtec]

What was the Frequency voltage output from the generator. Thanks for this video

[paulmeynell]

Thank you very much, very interesting.

[IronAgeAudioworks]

So many cool tools and toys!!!! Thanks for the video!

[brettbarnett]

Hi Ray.. Thanks for this video. I want to ask a question. I have an 8ohm dummy load box. I put bnc connectors on it to tap off the box and run to an o-scope. I take regular coax bnc cable. Female to female and run directly to my digital scope. The most I get before the SX-980 starts clipping is 2.64 RMS according to the scope. Am I missing something? I know regular probes have x1 and x10 switches. Is my scope setup wrong? I should be getting a lot higher RMS reading with this unit. Should I be multiplying that 2.64RMS by 10?

[barbsblogs]

Thanks for sharing, but if you’re getting distortion on the peaks would that mean you’re driving the finals to hard or is there a fault in the amp it self ??

[generationbehindhifi]

Where can I get a 500 watt or 1000 watt dummy load resistor? The highest one Parts Express sells is 200 watts. By the way, nice video! It's much appreciated!

[g.fortin]

Hi Ray.. any change you might do a short video on the basic settings like the ms/ and triggering for the digital scope when you first turn it on and want to measure the volts to figure watts like this ? .. not knowing much about scopes I am finding my new digital one a little confusing. but even for analog I need the settings to help me get started. thanks!

[jimpalmer]

What was the frequency and power of the input signal? Your bench amp looks very clean. Both of the peaks started to clip at the same time.

[Luke-V]

good evening, 1khz is always used in this measurement? Thanks for the answer, and thanks for your videos👍👏🤩and I also wanted to ask if it is possible to connect the signal generator to the oscilloscope, without a separating transformer, thank you for everything.

[zoltankecse]

Hi. here i go again. :) I have an simple DDS signal generator. (fy3224s) Can you tell me what is the amplitude level to set for sine wave? ( I know the frequency is 1kHz) But how many volt needs to set for the pa amplifier test with the DDS generator? I've many PA amp and i just want to test the output power and the signal. Thank you.

[bugsyjonesband]

that was very helpful. I'm ready to attack my stack. Thank You !!

[jesseyasaitis]

All these videos I've seen about measuring output wattage are all very good. However, no one has said what input voltage they are using to drive the preamp. Is it 20mv or 200mv?