Ok I'm a little thick so bare with me.
Two set of post with jumpers between them?
OR is the jumper removed between the binding post?
If it is I'd really like to see how that works.
I know it could if the other terminal had a toggle switch or a jumper for the other two binding post..
That would either double or half the impedance..
Leaving the jumper in and going diagonal? Better jumpers maybe, remove the bars if they have them, replace them with good ribbon jumpers..
That will change the sound.
Two set of post with jumpers between them?
OR is the jumper removed between the binding post?
If it is I'd really like to see how that works.
I know it could if the other terminal had a toggle switch or a jumper for the other two binding post..
That would either double or half the impedance..
Leaving the jumper in and going diagonal? Better jumpers maybe, remove the bars if they have them, replace them with good ribbon jumpers..
That will change the sound.