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Both would require you to adjust the non actuated side, I.E. The brakes above and BB5 AND 7 AND the actuated side, 5 by pulling the cable, 7 via the red outer knob.
Which means that even though Sypres are dual actuated and even IF you set it dead center you would then adjust both sides the same to get the same dead center bite.
coventry_eagle-
Both would require you to adjust the non actuated side, I.E. The brakes above and BB5 AND 7 AND the actuated side, 5 by pulling the cable, 7 via the red outer knob.
In regards to BB5, it's usually best to move the caliper actuated side as close as possible to the rotor, and then adjust the non-actuated side, rather than tighten up the cable on the actuated side otherwise you'll get less power.
BB7 obviously have an advantage as you said, both pads can be adjusted without touching the cable (which should always be set completely open to optimised braking power).
edscoble
So with dual action you'd have to undo the bolt tighten the cable redo the bolt. Whereas dual action would require me to also adjust the non-actuated pad with the bolt on the side? I've only briefly used mechanical disk brakes but never got on with them, this might be what I've been doing wrong.