| Cables, Power, Tweaks, Speakers, Accessories (DBT-Free Forum) Discussion of cables, power (the electric kind), tweaks, & accessories. |
11-22-2008, 12:20 AM
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Head-Fi'er
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Join Date: Jun 2008
Location: Singapore
Posts: 46
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Looking for Heavily Shielded RCA intereconnect, to shield from Radio Station
I stay very near to the Radio Station, and I am picking up radio interference from my tube amp
it has been confirmed that my tube amp is working fine
I need a very heavily shielded RCA, interconnect, any recommendation?
some interconnect that does not work
Bluejean
MIT
I DIY a belden 2 layer shielded wire, externally another shield, and ferrite bead! still some traces of intereference
btw is a darkvoice 337
Last edited by alamakazam; 11-23-2008 at 01:27 PM.
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11-22-2008, 04:48 PM
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Headphoneus Supremus
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Join Date: Jun 2008
Location: Brisbane, Australia
Posts: 5,318
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just because the tube amp has been confirmed as working 'fine' does not mean that it wont be a problem. i'm assuming that the tube amp was tested offsite?? if thats the case then it may be performing within operational guidelines but those guidelines dont usually involve shielding from nearby radio stations. there is no point getting a heavily shielded cable if the amp is not heavily shielded as well. if the amp IS heavily shielded then yeah the interconnect is your next step.I know this because I use an iphone as one of my portable rigs with a pico (which is pretty well shielded; only really beaten by RSA amps IMO). I dont shield my cables other than braiding them. and I find that this shields the signal from all but the burst that happens when the iphone switches from 3G to 2G coverage. everything else is perfectly fine. of course to do a proper job of shielding you'll need to buy a cable with a foil or braided copper directional shield.
edit: by your post it sounds like your amp is still the problem
__________________
Transports
Mac G5 Dual 2Ghz with 2TB internal Raid, 2 x DIYMOD 5.5G, iRiver iHP132CF
The Sources
RME Fireface 400, DIYMOD 5.5G 120GB HD, iRiver iHP132CF, iBasso D10
Amps
TRIAD AUDIO Lisa III Standard, iBasso D10, Larocco Diablo
Cans
JH13 26AWG cryoparts SCSCAg cable with solid white gold pins
UM3X w/UM56
DIY LA2000 tassie b/wood
Twisted Cables Cryoparts HD600 (Bocchino BAXLR connects)
Interconnects and tweaks (all DIY)
various Jena, cryo silver, cryoparts TWcu, SCSCAg, Duelund and piccolino cables,
Sys-Concept optical cables, Duelund copper VSF dock with Mundorf SIO bypass
In Progress:
AckoDac Sabre ESS9012 DAC with Dual mono (bridged) QRV08/buffered transformer coupled output stage
^^(16+ super regulators in total)
Transportable Buffalo II with OPA1632 and balanced discrete buffer
mildly scarred B32
COD with O-netics transformer coupling
Speakers
KRK V6 active studio monitors with KRK RP10S powered sub
Head-fi Feedback
Last edited by qusp; 11-22-2008 at 04:51 PM.
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11-23-2008, 01:19 PM
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Head-Fi'er
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Join Date: Jun 2008
Location: Singapore
Posts: 46
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I can deduce is the rca cable, because, I had the amp placed in a bomb shelter storeroom, is definately shielded!!! no noise heard inside.
I had the rca cable stuck out of the door, there was noise
also , without rca cable there is no noise in any location...
the rca cable is acting as antenna
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11-23-2008, 02:06 PM
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Headphoneus Supremus
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Join Date: Jul 2005
Location: Miami Beach, Florida
Posts: 16,961
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alamakazam, to try your theory that the cables are the culprit get a pair of Blue Jean Cable LC-1. They are relatively inexpensive and can be found at:
Precision Stereo Audio Cables from Blue Jeans Cable
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11-23-2008, 04:29 PM
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Headphoneus Supremus
Member of the Trade
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Join Date: Jun 2008
Location: Brisbane, Australia
Posts: 5,318
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Quote:
Originally Posted by alamakazam
I can deduce is the rca cable, because, I had the amp placed in a bomb shelter storeroom, is definately shielded!!! no noise heard inside.
I had the rca cable stuck out of the door, there was noise
also , without rca cable there is no noise in any location...
the rca cable is acting as antenna
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ummm.... of course; because the amp was inside but the cable wasn't, that would work as an antenna. a cable always works as a sort of antenna, but if you use a directional shield away from the amp towards to source then the RF is directed tat way. your method, the way it reads proves nothing about the amp itself being shielded. but if you intend to run it from inside a bomb shelter then yes you would need a directional shield pointed away from the amp
__________________
Transports
Mac G5 Dual 2Ghz with 2TB internal Raid, 2 x DIYMOD 5.5G, iRiver iHP132CF
The Sources
RME Fireface 400, DIYMOD 5.5G 120GB HD, iRiver iHP132CF, iBasso D10
Amps
TRIAD AUDIO Lisa III Standard, iBasso D10, Larocco Diablo
Cans
JH13 26AWG cryoparts SCSCAg cable with solid white gold pins
UM3X w/UM56
DIY LA2000 tassie b/wood
Twisted Cables Cryoparts HD600 (Bocchino BAXLR connects)
Interconnects and tweaks (all DIY)
various Jena, cryo silver, cryoparts TWcu, SCSCAg, Duelund and piccolino cables,
Sys-Concept optical cables, Duelund copper VSF dock with Mundorf SIO bypass
In Progress:
AckoDac Sabre ESS9012 DAC with Dual mono (bridged) QRV08/buffered transformer coupled output stage
^^(16+ super regulators in total)
Transportable Buffalo II with OPA1632 and balanced discrete buffer
mildly scarred B32
COD with O-netics transformer coupling
Speakers
KRK V6 active studio monitors with KRK RP10S powered sub
Head-fi Feedback
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11-23-2008, 05:01 PM
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Banned
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Join Date: Jun 2008
Posts: 5,248
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