Earlier, I asked which was better, crimping versus soldered connections for the spade lugs. Personally, I would lean more to silver soldered as superior--if you can get hold of silver solder. I couldn't find any locally. They just sell the standard 60/40(?) solder. If not crimped tightly, like by machine, then I expect some loss of conductance.
I'd like to mention that there is another way of attaching the spade lug. A month or so ago, I saw at Audio Visual in EDSA Shang some imported, robust, gold-plated spade lugs which have set screws built in. Simply slip in the bare wire, tighten the set screw and your done. Neat and classy. So was the price when I asked how much the pair was. I don't remember anymore, but I just had to admire them from a distance. That was why I started the thread in the first place, to find a cheaper solution, yet maximize the conductance of the speaker wire.