High quality audio coax cable?
Discussion
tty thin stuff or video coax on the CPC site.itsnotarace said:
Thanks for the link, sorry forgot to mention it's cable only I'm after as it has to pass through conduit. I'll add the RCA plugs afterwards.The ideal would be something like TV coax (ie single core) but for audio and I'll run two cables side by side.
ETA What would happen if I used regular 75ohm satellite coax?
Maplin used to do a decent enough cable, had a clear rubbery silicon sheath, braded copper shiled and copper centre. I used a load of it for making custom length interconnects, and they're still going strong maybe 10 years later.
http://www.maplin.co.uk/high-quality-av-signal-cab... - not the same, but similar idea.
http://www.maplin.co.uk/high-quality-av-signal-cab... - not the same, but similar idea.
Edited by HellDiver on Monday 28th February 14:29
HellDiver said:
Maplin used to do a decent enough cable, had a clear rubbery silicon sheath, braded copper shiled and copper centre. I used a load of it for making custom length interconnects, and they're still going strong maybe 10 years later.
http://www.maplin.co.uk/high-quality-av-signal-cab... - not the same, but similar idea.
Thanks for that. I can see that the capacitance is 62pF/M and I've just found some coax on CPC which is 56pF/M http://cpc.farnell.com/jsp/level5/module.jsp?modul... so it's haelpful to have the comparison. I might just try the CPC stuff as it's a third of the price http://www.maplin.co.uk/high-quality-av-signal-cab... - not the same, but similar idea.
Edited by HellDiver on Monday 28th February 14:29
cjs said:
Any twisted pair screened cable will do for a 12m run, look for microphone cable, you will need something with a thin enough outer sheath to fit in a phono plug though. Where are you?
Well I've got some thin stuff in at the moment (the same thickness as those white/red phono leads you get with DVD players etc) and there is a bit of a hum albeit covered up by the music. I figured if I used some beefier cable this would disappear.I'm in Paris BTW
Driller said:
Well I've got some thin stuff in at the moment (the same thickness as those white/red phono leads you get with DVD players etc) and there is a bit of a hum albeit covered up by the music. I figured if I used some beefier cable this would disappear.
I'm in Paris BTW
AS you're in Paris I wont be sending you some cable in the post then! Most important thing is the screen, either a foil or a braided screen, to stop any interference. Any unbalanced signal is prone to interference and grounding issues, if you have a hum it could be a grounding problem. I'm in Paris BTW
http://cpc.farnell.com/pro-power/jy-8022/20-0-12mm...
Thats the stuff you want there, 12m is well within spec
Thats the stuff you want there, 12m is well within spec
I've got 15,000 + metres of coaxial video cable that I pulled out of an Outside Broadcast studio.
2 x 12 metres (or a bit more) would fit in a decent sized jiffy bag. If you want to try a bit to see how good it is, or isn't, you can have it for the price of the p&p rounded up to the nearest fiver (probably £5 to £10 max).
2 x 12 metres (or a bit more) would fit in a decent sized jiffy bag. If you want to try a bit to see how good it is, or isn't, you can have it for the price of the p&p rounded up to the nearest fiver (probably £5 to £10 max).
headcase said:
http://cpc.farnell.com/pro-power/jy-8022/20-0-12mm...
Thats the stuff you want there, 12m is well within spec
Ah, thanks very much and that does help a lot because...that's exactly the stuff I've got plumbed in at the moment which is humming a bit! Thats the stuff you want there, 12m is well within spec
If you say 12M is within spec then I guess I have the dreaded ground loops (medical diagnosis).
Super Slo Mo said:
I've got 15,000 + metres of coaxial video cable that I pulled out of an Outside Broadcast studio.
2 x 12 metres (or a bit more) would fit in a decent sized jiffy bag. If you want to try a bit to see how good it is, or isn't, you can have it for the price of the p&p rounded up to the nearest fiver (probably £5 to £10 max).
That is extremely kind of you Sir, thank you 2 x 12 metres (or a bit more) would fit in a decent sized jiffy bag. If you want to try a bit to see how good it is, or isn't, you can have it for the price of the p&p rounded up to the nearest fiver (probably £5 to £10 max).
Bearing in mind that I've got the ground loops I'm going to see if sorting that out does the problem. Can I give you a shout by PM depending on the outcome?
You could also use BNC connectors, then fit BNC to RCA adaptors. You can get screw on BNC's, they're not the best thing around, but they are adequate, if fitted properly. Otherwise, you need a crimp tool, which is a touch expensive for a one off fitment.
I think, though, that 75 ohm coax cable isn't ideal for the application, although I've used it for interconnects without any problem.
You're likely to be better off with proper audio cable, and sorting out any ground loops. Does your existing cable run near to any mains cables, light switches, consumer units etc? This might be a source of inducted noise.
I think, though, that 75 ohm coax cable isn't ideal for the application, although I've used it for interconnects without any problem.
You're likely to be better off with proper audio cable, and sorting out any ground loops. Does your existing cable run near to any mains cables, light switches, consumer units etc? This might be a source of inducted noise.
Super Slo Mo said:
You could also use BNC connectors, then fit BNC to RCA adaptors. You can get screw on BNC's, they're not the best thing around, but they are adequate, if fitted properly. Otherwise, you need a crimp tool, which is a touch expensive for a one off fitment.
I think, though, that 75 ohm coax cable isn't ideal for the application, although I've used it for interconnects without any problem.
You're likely to be better off with proper audio cable, and sorting out any ground loops. Does your existing cable run near to any mains cables, light switches, consumer units etc? This might be a source of inducted noise.
No problem for the BNCs, I've got the crimp tool and loads left over from when I did my CTV. I imagine though that they would give a similar result to the F plug/RCA plug combination.I think, though, that 75 ohm coax cable isn't ideal for the application, although I've used it for interconnects without any problem.
You're likely to be better off with proper audio cable, and sorting out any ground loops. Does your existing cable run near to any mains cables, light switches, consumer units etc? This might be a source of inducted noise.
Actually, what makes audio cable more audio than coax? I've checked out the resistance and capacitance and I'm struggling to find a difference. The advantage I can see over the spindly RCA stuff is the greater screening of the coax.
No mains stuff near to the cable and it's in the vicinity of a major run of CAT5/CAT6/audio/coax/ etc in a cable tray and there are no problems with any of this. However I have noticed that when I turn on a particular light in the living room there is a click from the speakers.
HVAC MATT said:
buy some PF100 cable from your local electrical supplies
Is that basically RG6 cable? I've just found a reel of satellite cable I had left over and I've ordered some plugs from CPC so I'll see how it goes. Must see if there's a ground loop problem though.Driller said:
No problem for the BNCs, I've got the crimp tool and loads left over from when I did my CTV. I imagine though that they would give a similar result to the F plug/RCA plug combination.
Actually, what makes audio cable more audio than coax? I've checked out the resistance and capacitance and I'm struggling to find a difference. The advantage I can see over the spindly RCA stuff is the greater screening of the coax.
Erm...Actually, what makes audio cable more audio than coax? I've checked out the resistance and capacitance and I'm struggling to find a difference. The advantage I can see over the spindly RCA stuff is the greater screening of the coax.
. Unfortunately, that's about the limit of my audio knowledge, so I'm not sure off hand. I can find out, I know a couple of people who'd be able to give a comprehensive answer, although whether it actually makes any difference in the real world is up for debate, and probably depends to some extent on the quality of the equipment you're using.
Super Slo Mo said:
Erm.... Unfortunately, that's about the limit of my audio knowledge, so I'm not sure off hand.
I can find out, I know a couple of people who'd be able to give a comprehensive answer, although whether it actually makes any difference in the real world is up for debate, and probably depends to some extent on the quality of the equipment you're using.
If you could find out without going to too much trouble, I'd love to know purely from an interest point of view. Sounds like you know some very handy people!. Unfortunately, that's about the limit of my audio knowledge, so I'm not sure off hand. I can find out, I know a couple of people who'd be able to give a comprehensive answer, although whether it actually makes any difference in the real world is up for debate, and probably depends to some extent on the quality of the equipment you're using.
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