A Couple Little Things I'm Wondering About


Two quick questions for anyone with any experience with either topic.

1. Why do some folks with usually higher end systems use those cable lifters to keep the cable elevated? What are they intended to do? If you use them, what do they do for you please? And if you know do they make sense from a purely technical standpoint? 

2. I bought a bunch of those gold plated caps to cover all the unused RCA jacks on the back of my AVR. I believe they are intended to keep noise down. If you use these, please comment on them. Do you think they do what they're supposed to do, and/or do they make sense from a purely technical standpoint?

Thanks!
jcolespeedway

Showing 3 responses by dannad

Jcolespeedway, most cable vendors and certainly most in these forums and on this thread would have a hard time providing a valid and quantitative reason for the impact of dielectric value especially for the cable most likely to be elevated, i.e speaker cables. Now you expected them to provide technical explanations which would require quantitative analysis of not only the impact of flooring material on cable impedance, but what potential qualitative impact that would have on an audio signal. Keep in mind it would take literally minutes to measure real world impacts of carpet, wood, etc. on cable capacitance and impedance which already have questionable impact at all. if they can't provide measurements or have a qualitative discussion as opposed to hand waving you can pretty much assume they are guessing.


Similarly if someone cannot talk intelligently about RF attenuation versus frequency of a case opening then they again are guessing. Not to mention that the connected cables will absorb and communicate orders of magnitude more RF than a small opening.
See what I mean jcolespeedway, tons of hand waving but not a real technical discussion no matter the expanding number of posts.

One person likes to use the word science a lot but offers no confidence they have any significant background in the related science. One likes to talk about vibrating cables but likely has never done the very easy work of measuring the level of induced signal in a vibrating cable.


I do encourage you to try out cable elevators just get someone else to raise and lower your cables without telling you what they have done.



If you think that constantly tweaking and using things like cable elevators makes you an artist and not a measurebator as per Ken, then I don't think you understand what he was trying to communicate. Of course, the fact he was talking about creation as opposed to recreation really makes your point rather moot. I will guarantee you that when he prints a photo, or uses a monitor for review, he expects dead accurate color reproduction and would not take to kindly to a print shop deciding his choice of color tone was wrong.


There are some honest audiophile, at least honest with themselves who admit they are not trying for reproduction accuracy, and hence most measurements really don't matter. 


When you get to elevators and RCA covers, we are no longer personal preference in sound not artistry, except as some have pointed out, the elevators can look nice.