Two things:
Peter,
Considering you said you had made a mistake with the veneer, your speakers look
extremely nice. Mine, if I ever finish them, will get a coat of primer and one or two coats of whatever leftover paint is in the garage. They could end up lavender, white, cake batter

, or an olive drab-like color. It all depends on what is available. At best, mine will look plain.
My second thing is (to any and all experienced hands):
Okay. I've got the coil, cap, and inductor snugly attached to a piece of board with zip ties and silicone glue. I know they will be attached (screwed to) the back walls behind the drivers, but...
Correct me if I am wrong in my assumption:
I attach the red wire from the amp to one side of the filter and the white wire to the other side. Another red wire will lead from the filter/amp wire connection to one of the driver connections; ditto with a white wire. Does it matter if I attach the red wire to either driver connection? I mean is there a right way and a catastrophic way? So long as there is a circuit does it matter which direction the electrons are flowing?
[I just attached speaker wires to the filter and the included red and white wires to a driver. Success! I got music.

I got music even if I switched polarity, but I want to think only one connection was correct and reversing polarity may damage the driver??? (Yes/No?)]
I hope I haven't confused you horribly just now. Thanks for the hand holding.