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In Reply to: RE: power cord trick posted by Duster on July 07, 2017 at 21:06:14
When I re-did the wiring in the Furutech e-TP60, I replaced the stock IEC socket with the Furutech FI-06(G). Even though the stock IEC was a nice gold-plated Furutech connector itself, I wanted the screw termination rather than the solder lugs. Wish I'd known about the FI-10 back then, as it looks to have the same cutout dimensions as a standard IEC socket. The FI-06 is slightly larger, and required some Dremel-ing on the case to get it to fit. I'm happy with the result, but it would have been a lot easier with the FI-10. :)
Image: Radio Shack 270-0739 Surface Mount Fuse Holders
I think the stock Furutech IEC inlet for the Furutech e-TP60 is their entry level model. It sounds similar to a nickel plated brass IEC inlet but without the sonic signature of nickel involved. Essentially a warmer sound with more natural image outlines that's quite easy to identify as being comparatively beneficial. Obviously better sounding than a nickel plated IEC inlet, IME.
I would expect the effort you put into the upgrade was worthwhile, bcowen. The Furutech FI-06(G) features pure copper contacts, so it may be a superior sounding design vs. the Furutech FI-10(G) featuring copper alloy contacts (phosphor bronze, IIRC), but not necessarily. Pure copper vs. phosphor bronze (and brass for that matter) can be selected for unique sonic signatures that some might find more satisfactory for any given application.
BTW, I found this NOS Radio Shack surface-mount fuse holder (shown above) that looks to be perfect for my Furutech FI-10(G) IEC inlet installation project. The solder tabs and small footprint are perfect for the task. I'll simply adhere the plastic base to the side of the enclosure with silicone adhesive and be done with it.
Are you sure you won't negate the benefits of the FI-10 by running the incoming power through the nickel or tin plated, magnetic steel contacts of that fuse holder? The Furutech FI-03 is only $15 in gold or $19 in rhodium, and both platings are on the same copper alloy (I think) as the FI-10. Solder lugs instead of screw terminations, but you'll have to solder to the RatShack fuse holder anyway.
I understand what you are saying, but the external fuse holder features tin plated brass contacts, not nickel plated magnetic steel, and won't degrade performance any greater than a typical fuse holder that all audio components must have. I'll simply be moving a fuse holder placement from one location to another rather than stepping on the performance of the Furutech FI-10 of which I already own and would prefer to use vs. the FI-03 if given a choice.
I'll put it this way: If I were given the opportunity to design an audio component from scratch, I would not implement an IEC inlet with an integral fuse holder, I would choose to use an external fuse holder like I'll do in this case. That said, if I didn't already have an orphaned FI-10 that's ready to be installed, I would be more willing to consider a new FI-03 for the application. Thanks for sharing your thinking and comprehensive ideas about the issue, bcowen!
TIN PLATED BRASS!??!?!?!?
Isn't that like stopping by Clem's Gas 'N Grub and filling up your Ferrari with 4-year old 87 octane?
Just kidding. :)
It's always nice to use what you already have instead of having to go buy something. I should learn how to do that. :)
The Radio Shack fuse holders arrived. The design features a substantially rigid polycarbonate structure with well-made tinned brass contacts as good as most HQ quick-disconnect tabs I've come across.
If my memory is correct, the "alpha" designation refers to their cryogenic treatment of the copper (or whatever metals they may use in their various products).
If you must use a fuse, then this particular configuration would be the way to go, rather than the cheap(er) Radio Shack part, made with inferior metallurgy. Duster's basic idea is a good one....your idea bumps it up a good amount, and for only a few dollars more.
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