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In Reply to: RE: Question for Jneutron posted by JB on June 28, 2007 at 11:28:38
First you have to determine the characteristic impedance of your interconnect cable.
Connect a capacitor in series with a resistor at the input to your amp (at the end of the cable would be better, but this would be impractical with most RCA-type connectors). The resistor value matches the cable characteristic impedance. The capacitor value is selected to keep the corner frequency well above the audio band, say 80 KHz minimum.
I use this technique on speaker cables, where it is practical to place R-C networks at the spade or pin connectors. AFAIK, no one has done this with interconnect cables. Speaker cable dynamic loads sound best to me when made of silver-mica capacitors and PRP resistors. Hosfelt Electronics sells silver-mica caps cheap. Michael Percy sells PRP resistors.
The fancy audiophile version of this tweak is the Walker Audio High Definition Links. These formerly used naked Vishay film resistors and some sort of axial mystery cap in a metal jacket with the numbers ground off. I believe he is now using some sort of silver capacitor. The resistors are 10 ohms and the capacitors are 0.01 microfarads. My DIY versions use 15-to-20 ohm resistors and smaller silver-mica caps. I use several networks in parallel, with decreasing values of capacitors, to get a wider frequency response.
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