podknocker
Well-known member
Audioquest Diamond USB A > B (72V DBS) Cable (audiodestination.co.uk)
Free snake oil with every order! Outrageous.
Free snake oil with every order! Outrageous.
Hi,I do think the ability of a speaker cable, to carry certain frequencies, hence a cable's susceptibility to the 'skin effect', is the main reason they sound different. Having a thick cable, for low frequencies and smaller diameter 'multi-strand' cables, wrapped around the thick cable, for higher frequencies, must influence the sound.
I think this thread has drifted far enough fro m the OPs question, it's becoming a spouting match....Hi,
Skin effect does not matter at audio frequencies. Whether the current density is concentrated around the outer diameter of the strand, or is uniform across the strand, will not affect the signal. The signal is dependent on the resistance, inductance and capacitance of the cable. A null test of the cable will show that despite the cables parameters, it introduces no distortion. You get out what you put in, with a slight decrease in voltage, but even at 20kHz it is 10milli-dB's at most.
Here is a link to a loudspeaker coil design description :
For a powerful sub woofer the voice coil wire is at most 28AWG, which is 0.32mm diameter = 0.08mm2.Voice Coils: A Tutorial
Mike Klasco (Menlo Scientific) provides an overview on how to specify or manufacture voice coils. In this reference article, Mike Klasco recaps on voice coil basics, bobbin materials and sizes, collars, winding techniques, configurations, tips and tricks and wire types and considerations - a...audioxpress.com
QED79 strand has a cross sectional area of 2.5mm2. This is 31x greater than the high power sub woofer voice coil cross sectional area.
So, for USB cables, despite the voltage being analogue, it still represents a bit, so any cable design has zero effect on the audio. Once the data is clocked into the USB receiver register, then that is it, it is either valid or not, and the errors if any will be heard as pops, or clicks etc.
Regards,
Shadders.
Hi,I think this thread has drifted far enough fro m the OPs question, it's becoming a spouting match....
Unfortunately I have been told to let these threads run, ho hum!
no, it generally simply allows people to just talk ballcocksHi,
Yes, letting these threads run off course a bit in some areas, allows for people interaction, grows relationships organically, and provides extra information for others to learn if they want to. The forum is a community of people who have differing views.
Regards,
Shadders.
Wow! Far too much pondering and deep thought going on here... just stick some tunes on manCheers for that. I do think the ability of a speaker cable, to carry certain frequencies, hence a cable's susceptibility to the 'skin effect', is the main reason they sound different. Having a thick cable, for low frequencies and smaller diameter 'multi-strand' cables, wrapped around the thick cable, for higher frequencies, must influence the sound. The amount of signal arriving at the speakers, must play a part in the speaker cable's 'tonality'. There is one thing I'm convinced of and that's speaker cable differences. I had blind listening demos at a HIFI shop, granted, when my hearing was much better, years ago and I did hear the difference between cheap copper cables and better quality copper cables, with silver plate around them. It was appreciable and I would have put money on it, back then. I can tell the difference, between Pepsi and Coca cola, by smell alone, never mind taste. I don't listen to many cables these days, but I am convinced the many elaborate materials and designs, do have an impact on the information being sent to speakers. There are so many variables and technical things to consider, but I don't obsess about this stuff now. I have decent cabling and I doubt an upgrade would be worthwhile, at my age and with the current kit I own. I remember Peter Belt trying sometimes crazy things, to improve sound quality. Having a clean power supply is one, but keeping HIFI a certain distance from copper pipes and water, might seem like overkill. I suppose if it can make a difference and you eliminate every potential problem, you would end up with the perfect sound. At the end of the day, however, we all hear things slightly differently, so its not a panacea.
Amongst other things, he once advocated putting a piece of plain paper under one chair leg.I remember Peter Belt trying sometimes crazy things, to improve sound quality.
Tried it?Amongst other things, he once advocated putting a piece of plain paper under one chair leg.
What's crazy about that?
Neither have I. I do remember a magazine in the 80s gave away some Peter Belt stuff, including some bits of foil to put on mains plugs, and something else I can’t remember. I think the mag was Hifi Sound. I remember trying the foil, for what it was worth…I haven't, but you can be honest with us.....
Audioquest Diamond USB A > B (72V DBS) Cable (audiodestination.co.uk)
Free snake oil with every order! Outrageous.
yes and probably you can hear the difference, dont ask me why because i cant find an answer fot it. but changing a stock usb cable to ifi usb cable changed things alot for me. my player is a raspberry pi maybe usb implementation in pi is not as good as a dedicated player.I'm going to try the usb out on my ifi stream into my DAC .
The question is it worth spending money on a expensive hi-fi usb cable .
Could I tell the difference from a cheap one I may have from a old computer set up from back in the day?
Well, unless you’ve read the white paper for DBS (and understand it) and actually listened to some cables using it, it’s hard to hold a valid opinion - not too dissimilar to most other opinions on the Internet, people boycotting this or that or slagging off companies when they actually have zero experience or knowledge of said company/product etc etc.They should be fined for that. I have decided to stop buying anything from AQ. Simply I do not want to support a company with such a massive deception.
Hi,Are we getting personal here? Are you the one defining who can have a valid opinion on a public forum, so that you can keep running your business? "I heard their cables in the early 90s " - does this argument have any relevant connection with the subject?
I have 2 AQ HDMI cables and 1 optical cable. I have had couple of USB cables, currently have 3. 2 QED, 1 Wireworld. In case my HDMI cables all the generic ones with the right specification can keep up with AQ.
Between a printer cable and the QED New Reference High-Resolution USB anyone could hear a difference. Between my cheaper QED and the more expensive one I am not so sure, since both have decent wire and shielding. And I think my systems are quite revealing. Yes, you need a well designed and crafted cable. No, you do not have to buy 1,5 m for 689 pound
Considering the measurment history of AQ on ASR, I am pretty certain we would be all suprised by the greatness of DBS...
It is a digital connection. They either work or they don’t. If a cheap one works you will not get any better result by throwing money at it.
That's not what happens where my old boy lives, alas.With digital transmission, (also sent electromagnetically) you get a perfect picture, or (very soon after severe glitching) nothing.
If it's glitchy and pixelated, then (to me) it's 'nothing' in the all or nothing sense.That's not what happens where my old boy lives, alas.
that's logical but in reality for me it made a difference. switch your stock cable with ifi's cable and post the results 😉Nothing to argue about boys.
Yes, it is an electrical connection, carrying a digital signal.
So yes, when the digits are beyond help at the receiving end (such as the in the case of the extension USB cable mentioned above) then you will get problems.
Think of it in terms of TV reception.
With analogue transmission (sent electromagnetically), you could, often did, get noise on your picture.
With digital transmission, (also sent electromagnetically) you get a perfect picture, or (very soon after severe glitching) nothing.
You don't ever get noise on your picture. To all intents and purposes it's all or nothing.
A digital cable itself won't give you noise. Some people suggest digital cables can alter the tone of the sound.....😏