"directional RCA cables" what constitute a directional RCA cable? in my opinion there is no such thing in an AC circuit, other then the shielding grounding scheme, if used.
Get the best one available at BlueJeansCable. I had them for my subs and they worked great. Well built. I made sure to get the same length for each sub so no time delay issues even though one sub was only a short distance.
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