Handling a complex load by power amplifiers

[Salt]

View attachment 435541


What do you think? 10db more distortion with a speaker.

0.5 up to 0.05 %. You're certain to hear this?

 

[NTK]

This is the frequency response into the complex dummy load. That means the distortions harmonics from the 1 kHz test signal will be magnified as well, thus contributing to the increase in the "measured" THD.

 

[Cbdb2]

0.5 up to 0.05 %. You're certain to hear this?

Not the point. The point is that the measurements are that different Every amp will be different, some will have less distortion with a speaker load. What if the amp difference went from .1% distortion to 1%?

 

[Cbdb2]

This is the frequency response into the complex dummy load. That means the distortions harmonics from the 1 kHz test signal will be magnified as well, thus contributing to the increase in the "measured" THD.

Adding very little below 10khz where most of the harmonics will be and only 2db between 10 and 20khz. Dosnt add up.

 

[peng]

Power testing is performed with reactive loads courtesy of $25,000 Audiograph loadbox:

So your generic statement is false.

The above test are performed at 1% THD so even distortion is accounted for to some extent in those tests.

Hello @amirm are those tests (not just this one, but all such tests) done with 2ch driven or just 1? Sorry that has been answered before.