LSA Voyager GAN Amplifier

I was demonstrating how an audio analyzer can measure inconsistencies between cables. When you have hands on experience rather than just reading what the clowns on ASR say you can learn a few things. I measure stuff all the time with balanced connections and the consistency is spot on. 

I was demonstrating how an audio analyzer can measure inconsistencies between cables. When you have hands on experience rather than just reading what the clowns on ASR say you can learn a few things. I measure stuff all the time with balanced connections and the consistency is spot on.

Pretty obvious from my replies AmplifierDude that I have more than enough experience when I can look at your numbers and know whether they are "real" or there is a flaw in them.

I’m kinda new with my analyzer. How do I measure to figure out the THD in the audible band with a 15khz signal? I’m using the dScope software.

https://www.audiosciencereview.com/forum/index.php?threads/what-tells-us-more-practice-or-theory.28502/

These were your exact words from Saturday, November 27, 2021. So you have become a measurement expert in the last 3 days? I stick to my previous comment. I do not think you know how to use your tools properly. Asking how to measure the audio band THD of a 15KHz reinforces that you do not understand the measurements (hint, there are 0 harmonics of 15Khz in the audio band, hence you cannot measure it). The last post even brings up your name. You may want to try to understand a multi-tone IMD test it will prevent saying things you may regret later. Will you grace us with your list of "measurements that matter" ?

In respect of other people here, I will not respond to this more, as the thread is already off track.

Looks like you’re making things up. Unlike you I actually posted some measurement results. Rather than just blindly trusting in your god Amir’s word.

Looks like to me whoever said that over on ASR was just testing to see if anyone knew what they were talking about. Because over on ASR, they only listen to music at 1khz. The answer to that question is simple. Do a 2 tone test with 1 tone @ 1khz, and the other at 15khz. Then run the THD+N test. Then follow by the standard test of 1khz on its own. Then compare the THD+N results between the 2 tests. If the 2 tone has higher THD+N, it was obviously due to the influence of the 15khz tone. But thats not in the text book. So it's not possible.

Over on ASR they don’t care about wide band distortion and noise. I was just reading over there about a new Topping amp. The sycophant’s were all jumping for joy because of the 1khz 5w THD+N. Because that’s what god Amir told them is the most important. So they completely ignored that the amp actually sucks using measurements that matter.

The answer to that question is simple. Do a 2 tone test with 1 tone @ 1khz, and the other at 15khz. Then run the THD+N test. Then follow by the standard test of 1khz on its own. Then compare the THD+N results between the 2 tests. If the 2 tone has higher THD+N, it was obviously due to the influence of the 15khz tone. But thats not in the text book. So it's not possible.

🤦‍♂️🤦‍♂️🤦‍♀️

You know very well we are talking about electronics here......of course, certain measurements of speakers are very important. 

That isn't what your statement said. You said:

What is so funny is that these "science is truth" people have no truth.   There are no double blind linstening tests that confirm one measurement is better than another.

Saying that this applies only to amps and preamps after saying something like that is changing the argument- the first statement remains false.

That old junker maxes out at -80dB THD+N. Useless for modern audio gear engineering. Especially for class D design work. No wonder you didn’t know Johnson noise existed.

To be clear, the conclusion isn't supported by the opening statement. You don't know anything about me; the conclusion is not only unsupported but also false. And I made my statement in the context of crossover components in a loudspeaker. I would be really interested if you could show that they make even a 10th of a dB difference to the noise floor. In practice that seems difficult at best since you'd need an anechoic chamber to prove it. Regarding the analyzer, its proven itself very useful during the class D project as have differential probes, smart tweezers and a decent thermal camera plus a fair amount of simulation.

With my analyzer cheap dummy loads have a -92dB noise floor.
 

Lol! This statement suggests that your analyzer isn't being run properly or its broken.