Double Advent wiring question...

I ran stacked Advents (literally stacked vertically with woofers on bottom) for several years first using a Marantz 2325 then an Adcom GFA 555. They sounded very good overall but had their plusses and minuses. In true budget fashion I built 8" stands out of plywood and concrete blocks to get the bottom speakers off the floor and that helped tighten up the bass. I upgraded to Mirage M3si's which were a big improvement but I still sort of miss those Advents. I love crustycoot1's post. Don't be afraid to experiment with placement and orientation. I never thought of turning the top speaker backwards!. Ironically I upgraded to bipole speakers. This is the kind of project that makes this hobby fun. BTW, you should run at least 14 gauge wire for your main run. Use spade or other connectors at the amp if you have to. Those speakers are going to draw a lot of current.

OK, here's to your original question. Yes, you can make a single run of speaker wire to each speaker and then add jumpers to go from the + of that speaker to the + of the stacked speaker, same for minus terminals (actually Advents labeled their terminals 8 ohm and 0 ohm IIRC). That is the appropriate way to do it. The reason I suggested running 14 gauge wire is that I assumed you were making a single run and using jumpers. I would make the jumpers out of high quality speaker wire (14 gauge is fine) and terminate the ends with spades. If you are going to experiment with turning the top speakers around make sure that your jumpers are long enough.  I would also suggest terminating the end of the long wire run with spades at the speaker end. I realize that this next point is outside the scope of your question but I would seriously consider replacing the speaker terminals in your amp with good quality 5-way binding posts. On most amps this isn't too difficult.