@jjss49 - I experienced problem using a heavy gauge (i.e. thicker than 18 gauge) solid Hookup wire for my speakers.
I do realize that solid is better than stranded wire, but if your crossover is mounted on PCB like mine, there is the possibility that the copper trace on the PCB could separate from the board and break. I suffered this issue many years ago. I changed to stranded
There are some very good stranded wires out there e.g. my favorite, Neotech UP-OCC copper or UP-OC silver
If the Crossover is point to point wiring then it might not be an issue
Regards - Steve
I do realize that solid is better than stranded wire, but if your crossover is mounted on PCB like mine, there is the possibility that the copper trace on the PCB could separate from the board and break. I suffered this issue many years ago. I changed to stranded
There are some very good stranded wires out there e.g. my favorite, Neotech UP-OCC copper or UP-OC silver
If the Crossover is point to point wiring then it might not be an issue
Regards - Steve