I just installed the Isoclean fuses in my Marantz SA-11S1 SaCd player. This player has 5 fuses inside. Turned it on and boy did it sound bad. The worst tweek I have ever tried. The highs were gone. In fact the over all volume was reduced! My heart sank. Faintly remembering the info sheet says these fuses have a direction to them, I had hope. Out comes the player from the stand. Fuses pointed in the other direction, now towards tha front of the player. Back in the stand, all connections remade. When i turned off the amp I left the volume at the same level. Power on. Hurray! SET magic sound restored. The crystal clear mids are there and the delicate highs have returned. These fuses are supposed to be placed following the direction of current. I do not know if I have each circuit fused correctly as I do not have a diagram of the current flow. But in the Marantz the fuse arrow sounds better pointing to the front versus all pointing towards the rear. So if you try an Isoclean fuse, try it in both directions before deciding if it helps or not. David Pritchard
Thanks for the reminder. I should check and experiment with the other direction now installed in my amp. Was it a noticeable difference over the stock?
Directionality in a fuse makes me wonder if it has diode-like properties. Otherwise, how could you explain directionality? Does it have shielding that is grounded only on one side like interconnect that thus makes it "directional." If so, I doubt that the length is enough to pick up emi or rfi.
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