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Idea to reduce RFI

I live 1 block from the main mobile communication tower. That my speakers has pickup some radio channel though its only audible with my ear next to the speaker.

i am looking for any idea to reduce this kind of RFI. how bout an ferrite core? ERS paper? shield interconnect? shield power cable? which is most effective way as read somewhere in the forum that shield PC for amp causes dead sound?

line conditioner or iso transformer help with RFI or they only good to clean up power?

i have all ungrounded cdp , pre and amp. would shielding PC help with floating ground units to reduce RFI?

my system:
cdp cyrus 8x with psr (no ground from unit)
pre amc cvt 1030 (no ground from unit)
amp amc cvt 2100 (no ground from unit)
cd buffer yaqin 6j1
belden diy PC
lessloss PC
few diy shielded and unshielded PC
audio art ic-3
gabriel gold Rev
kci silkworm
xindak fs gold
spendor s 3/5
porter port outlet on the way

thanks in advance
milen007

Showing 3 responses by tigerclose

tigerclose
8 posts
 
Milen,it is very simple.Just connect one end of the drain wire and the capacitor to the anode.Then the other drain wire from the fellow interconnect and another capacitor is connected to the cathode of a 9V DC battery.I use a spare pair of Audio note copper paper in oil 0.22uf capacitor (best sounding so far) ,so one end of the capacitor is connected and the other end is left unconnected.Also I discovered that ferrit core around ONE proximal and BOTH the distal terminal of the speaker cable definitely help to improve the sound as well.Happy tweaking!
tigerclose
8 posts
 
I was also troubled by an unshielded interconnect previously.So I added an copper braided shield which was gounded with a drain wire.The drain wire is then connected to a small DC battery and a 0.22uf capacitor.WOW!!the sound was fantastic very life-like,much more detail and 3 D like.The soundstage just open up with greater depth and height.I think this active shield help eliminate the RFI/EMI. Now I can never enjoy without the DIY active shield on,it is that good.
tigerclose
8 posts
 
Milen,it is very simple.Just connect one end of the drain wire and the capacitor to the anode.Then the other drain wire from the fellow interconnect and another capacitor is connected to the cathode of a 9V DC battery.I use a pair of Audio note copper paper in oil 0.22uf capacitor (best sounding so far) ,so one end of the capacitor is connected and the other end is left unconnected.Also I discovered that ferrit core around ONE proximal and BOTH the distal terminal of the speaker cable definitely help to improve the sound as well.Happy tweaking!
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