[W9TR]

I just saw the video and read the thread.

In a past life I had a bunch of personal experience with both null testing and Double Blind A/B/X testing. If you listened to FM radio in the 80’s through 00’s you’ve heard my designs.

Here are the fallacies with Mr. Weiner’s approach:

1. He had to fiddle with the cable to eliminate interference from his computer that appears to be several feet away. Did one cable perform better in this regard? We‘ll never know. Is that kind of interference audible? At what level?

2. He states subjectively that ‘a null that is 80 dB down is not audible”. It is a statement of fact. Really? Show me the peer-reviewed tests that prove this to be the case. Note: if you find one l’ll probably be able to pull it apart.

3. He is measuring the difference between two cables. That’s uninteresting. What I really want to know is what is the difference between the signal at the input of the cable to the signal at the output? That takes into account the whole chain, from the signal source to the load. It shows what the cable is doing to the signal passing through it.

4. His null setup is not noise optimized.

5. He didn’t do an FFT of the null residual which would have allowed him to average out the noise and see a much more in depth and detailed view of what to him just looked like broadband noise in his test setup.

I haven’t yet looked at Paul’s response.

As far as the violin test, I have personally experienced a similar situation with classical guitars played live on stage. If anyone is interested I’ll post about it.

Tom