Hi Garfish. You can email me at "mark.jenkins@telecom.co.nz". TPC stands for Tough Pitch Copper, but means the stuff your electrician puts in the wall. To run a dedicated AC feed, TPC is fine in my opinion since the key issues are very tight connections and very low resistance. It is only the last 6 feet or so that you need a good quality audio AC cable. That said, it appears Albertporter has used a higher quality cable for his AC feeds - not a high-end AC cable, but a high purity conductor in his feeder. I put it badly in my previous post, but I just meant that the TPC feeder cable is just as directional as all your other cables, if not more so. When I did my dedicated feed I put it in the wrong way and got a flat and bright presentation. When I put it in the right way things improved quite a bit. I just thought you should check this before you start voicing your system to overcome the brightness. Other things to do are to replace any fuses in the feeder with ceramic types, and check, clean and tighten every connection right back as far as you can go.
