darrylfunk
Banned
not according to loads of amp manufacturers....
How critical is a mains cable to ensuring system performance?
- Thread starter scottcarpenter
- Start date
not according to loads of amp manufacturers....
I am afraid I don't understand your comment, could you possibly expand it. If you are talking about RFI then I have only talked to one amp manufacturer about it (Tom Evans) and he said it was an important issue in preamp design and also phonostage design.
Nic P
Alan Sircom
I dü werds, me
Sorry, I get S-O-S infrequently now. I mixed this test up with the one where they used a bunch of top studio engineers and producers. In that one, they didn't necessarily pick out their own choice of DUT, but their pecking orders were internally consistent.
If I asked around the office for people to listen to the sound files, I'd get a sales guy, a couple of printers and a decorator, and his small dog. They may be good listeners...
Robert
Tapehead
They have.
ultrawomble
Sith Lord
I assume you mean total mains injected RFI rather than just RFI that is picked up by the actual power lead itself?
Richard Kimber
pfm Member
That's an inadequate response. You should at least quote some references for those of us who are trying to make up their minds.
- Richard.
sq225917
Bit of this, bit of that
Rob was correcting his grammar, "they are" with the correct "they have", not making a statement about the veracity of the content of the post.
Yes I agree with NicP, power cables can make a difference to the amount of RFI passed onto a component. But only if they have filters built into them which nearly none of them have, and I don't mean Sawyers discs or any of that other bull5hit, I mean big great chokes and frigging capacitors.
Yes I agree with NicP, power cables can make a difference to the amount of RFI passed onto a component. But only if they have filters built into them which nearly none of them have, and I don't mean Sawyers discs or any of that other bull5hit, I mean big great chokes and frigging capacitors.
DevillEars
Dedicated ignorer of fashion
I'd buy that....
... as many did!
PS: Those old clockwork gramophones had no problem with cables
MikeMA
pfm Member
Very interesting avole. Reminded me of the late Gerald Bull of Supergun fame. http://en.wikipedia.org/wiki/Gerald_Bull
Paul R
pfm Member
Can you support that?
The problems I have with your mains cable assertion are things like,
1. every piece of equipment, every mains supply and every environment is different.
2. changing the mains cable doesn't change the basic performance of the device. Why doesn't the RFI manifest as noise, as it does with, say, a phono stage?
I don't know what 'time domain distortion' is, if it's not just distortion.
Anyway I don't see plausible, I await your enlargement.
Paul
ultrawomble
Sith Lord
So the RFI that enters the last 1.5m or so of cable is more significant than the RFI that enters all the cable that connects your wall sockets to the power station?
A top RF engineer tells me yes. Whether this because the wire to the socket is reasonably well shielded, or the environment from socket to equipment is subject to significant RFI, or whether the plug/socket interfaces generate RFI, or something else, I don't know.
Nic P
Robert
Tapehead
Just measuring RFI at the mains cable is pretty pointless unless you have an obvious problem.
You need to be measuring the effects of any RFI on the output of whatever is being driven by the cable. You don't listen to the mains cable, you listen to the output of the pre, dac, amp or whatever is connected.
You need to be measuring the effects of any RFI on the output of whatever is being driven by the cable. You don't listen to the mains cable, you listen to the output of the pre, dac, amp or whatever is connected.
Robert
Tapehead
There are no plausible theories for time domain distortions existing in a metre or so of mains cable or interconnect.
Theories yes perhaps, plausible definitely not.
SteveS1
I heard that, pardon?
Why not dedicate a couple of pages each month to a little section featuring a couple of reviews or features on headphones/headphone amps/DACs/mobile device? It must be pretty easy to get a couple of interesting bits of headphone related kit each month at different cost levels.
You're joking, aren't you? The traditional magazine market is haemorrhaging badly as a result of the internet. I haven't bought a hifi mag for years, a mate gave me one a year or two ago, but it contained so little material of interest I junked it. They are already £4+, put it the wrong side of a fiver and it's staying on the shelf.