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Old 5th June 2008, 10:56 AM   #1
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Default RF Muting Circuit for audio cables

Anybody got some ideas on how to make "RF Muting circuits" for audio cables... like those found on Transparent Cable IC's.

Is it a simple low-pass zobel network or what?

D
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Old 6th June 2008, 02:16 AM   #2
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Hello Dutchman, I'm sure that Transparent will tell you something else (if they talk at all) but that is all that would be needed to mute RF on an interconnect
The question I have is why? If you are getting raw RF signals picked up by your interconnects, and then it is actually making it into and through your system, you have other problems. To start with, your interconnects need better shielding. Beyond that, your amps, etc. have way too much bandwidth.

Peace,

Dave
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Old 9th June 2008, 05:05 PM   #3
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Ferrite beads?!

I_F
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Old 9th June 2008, 05:26 PM   #4
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Oh yeah, forgot about those!? Guess I was suffering a bit of a mental lapse. However, I still think there are bigger issues if you are having RF problems in your audio system. Better to find and fix the root cause than to band-aid.

Peace,

Dave
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Old 9th June 2008, 07:05 PM   #5
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Guys...

I have no problems in my system - I was only wondering as these days there is so many "pollutants out there".

Cellphone signals, digital tv signals, Bluetooth signals etc...

The world is a very dirtier place, electromagnetically, than 30 years ago... right?

D
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Old 9th June 2008, 07:45 PM   #6
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Hello GD, I would agree with you there. But I think on a time scale you would need to go back around 100 years. Before the advent of radio. If you really want to filter out the RF in the atmosphere, I would recommend that you wrap your listening room in metal screen material (like used in window screens), then ground this. You have just created a Faraday cage! That should keep most of the problems out, but you will need to install an antenna external to the Faraday cage to pick up radio signals. Also, Faraday cages won't stop Gamma rays.

Peace,

Dave
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