Which method involves the least detriment to the signal. A few examples to consider. XLR balanced connections.
( 2 subs )
a) Using a Y from the pre amp or avr, then one line out to each sub.
b) Or would you just use a single line out from pre to the first sub, then from that sub, use it's pass through to the other sub.
(3 subs )
a) Line out from pre to the first sub, then use the pass through from the first sub with a Y to connect the other two subs.
b) Or would you just use the daisy chain method for all the three subs, pre to sub one, sub one then to sub two, then sub two to sub three.
What if any would be the drawbacks or advantages to the electrical (signal ) connecting either way ?