bi-wire cables on single binding post, sonic loss?

There is some confusion in the answers posted.
I am referring to identical cables; one pair with 2 spades on both ends; and another pair with 2 spades on one end and 4 spades on the other.

I just doubled up the spades on the same speaker terminal with the bi-wire pair. No audible difference.

If you connect the wires together at both ends (amp and speaker binding post) then technically this is so little different from a thicker gauge of wire as to be of dubious benefit = think about it => you are shorted at both ends so the signal must be the same at both ends the only difference is a lower path of resistance between the two points as you have presumably more wire thickness between the two shorted points.

Bi-wiring works when the speaker allows separation between woofer and tweeter - this means a crossover that is designed to allow bi-wiring. In this case you can use a separate amp to drive each cable and reduce IMD distortion from driving 20 to 20Khz with one beleaguered amp (especially the high current demands of a woofer). Remember that an amps life is much easier if you restrict its load and the frequency range that it needs to cover.

Bi-wring also works well with bi-amping as in a setup using active crossovers => this will probably give the most benefit as the amp does not have to deal with driving a passive crossover so life gets even easier for the amp.

Sugarbrie- I was stating that I (personally) would remove the four spades from the speaker end of the cables, mate the conductors and install only two spades or bananas. This would lessen the chances of the post loosening from cable vibrations(through the extra spade/cable spread), and eliminate a connection. I believe Bar81 missed my point. Is this the confusion you cited?

Thanks for the responses. Just to clarify a few things that led to confusion:
The pair of cables I have in mind has 2 spades on one end (amp) and 4 spades on the other (speaker). I will double up the tweeter and woofer + spades to connect them with the single + binding post of the speaker (and accordingly for the -).
In doing so, I am not trying to achieve bi-wiring benefits with a speaker that sports a single wiring terminal. I'm aware that there can be no separation of the signal.
The thing is I would like to try these particular cables, that happen to be available as a bi-wiring pair only, in my system in a single wiring mode but I'd like to save the cost of having them redone for the moment (the latter would be the better thing to do, surely)
I was just wary of negative effects that anyone might have experienced to be a show-stopper.
Thanks for any additional thoughts.

I was just wary of negative effects that anyone might have experienced to be a show-stopper.

Absolutely no negative effects. You can wire this up and it will work great provided you don't mix +/- or red/black on the four spades at the speaker end (which could short out your amp if you are not careful).