I think ill go with what the designers and engineers at Rel suggest to do as opposed to listenng to posters on this site.
I have talked to at least a dozen different designers and engineers. Every single one of them said no don't do that. Caps, diodes, fuses, springs, power cords- you name it. You can ask as many as you like, I don't care, I challenge you to find one anywhere who says anything that cannot be boiled down to: "We use only the best, you cannot improve, do not even try."
This is for any component- amp, speaker, sub, cable ANY component- and any part - fuse, power cord, footer, cap, resistor, diode ANYTHING - it is all the same answer.
Go ahead, find me the one who tells you, "Yeah good idea we have to meet a price point and you don't so you can do a lot better."
I won't be holding my breath.