I see the issue with ABX blind testing


I’ve followed many of the cable discussions over the years with interest. I’ve never tested cables & compared the sound other than when I bought an LFD amp & the vendor said that it was best paired with the LFD power cord. That was $450 US and he offered to ship it to me to try & if I didn’t notice a difference I could send it back. I got it, tried it & sent it back. To me there was no difference at all.

Fast forward to today & I have a new system & the issue of cables arises again. I have Mogami cables made by Take Five Audio in Canada. The speaker wire are Mogami 3104, XLRs are Mogami 2549 & the power cords are Powerline 10 with Furutech connectors. All cables are quite well made and I’ve been using them for about 5 years. The vendor that sold me the new equipment insisted that I needed "better" cables and sent along some Transparent Super speaker & XLR cables to try. If I like them I can pay for them.

In every discussion about cables the question is always asked, why don’t you do an ABX blind test? So I was figuring out how I’d do that. I know the reason few do it. It’s not easy to accomplish. I have no problem having a friend come over & swap cables without telling me what he’s done, whether he swapped any at all etc. But from what I can see the benefit, if there is one, will be most noticeable system wide. In other words, just switching one power cable the way I did before won’t be sufficient for you to tell a difference... again, assuming there is one. So I need my friend to swap power cables for my amp/preamp & streamer, XLR cables from my streamer to my preamp, preamp to amp & speakers cables. That takes a good 5-10 minutes. There is no way my brain is retaining what I previously heard and then comparing it to what I currently hear.

The alternative is to connect all of the new cables, listen for a week or so & then switch back & see if you feel you’re missing anything. But then your brain takes over & your biases will have as much impact as any potential change in sound quality.

So I’m stumped as to how to proceed.

A photo of my new setup. McIntosh MC462, C2700, Pure Fidelity Harmony TT, Lumin T3 & Sonus Faber Amati G5 & Gravis V speakers.

dwcda

The sound evaluation at distance through youtube or recording mic from a specfic room imply so much variables that we cannot assess cables differences even if we hear them in all case...

In the case of milhorn test i heard a very good system in an acoustically acceptable room  acoustic and good mic conditions immediately, this is why i spot easily the differences...😊

In the second case with dwcda the room conditions and system conditions are less favorable , i did not hear immediately any differences except that the room/system were less good and perhaps the mic recording then i dont listen more than once ...They appear all the same in THESE CONDITIONS with this system/turntable/room ...

 

@dwcda 

Anyone in an optimized room with a balanced system want to give their impressions on the 7 power cords in this file?

hideous audio quality. Hiss, faint and distant. If my system sounded like this power cords would be the last thing on my mind 

I am way less direct or perhaps more diplomatic  than audphile 1 😊

 

But i cannot contradict him...😁

 

hideous audio quality. Hiss, faint and distant. If my system sounded like this power cords would be the last thing on my mind

 

Do you think I recorded these samples a second time? I just plucked them off of the original and separated them with a dead spot from the original. There was no change in any equipment involved.

dwcda OP

@mihorn You chose the JPS cord as the best & worst sound, the WT v2 was your second best choice. I agree with @mahgister they all sound the same.

I mis-estimated my cond. I listened lots of other people’s violin videos at WBF this morning. My ears are in bad cond. Read few posts from #142. I deleted my words from #142 but you can read my words from a reply.

I admit 1 time listen and feedback for 7 sounds (15 sec each) was my mistake. I was too confident with my ears.

The sound of your dubbed video is different sound from my video. Editing video damages sound. That’s why I don’t edit my videos.

You gave a good lesson. The sound is a hard field. I’ll be careful for future feedback of any sound. That’s why there was no natural sound until now in last 150 years of audio history. Alex/WTA