[Pancakes]

When designing the XO for my mains I didn't have the rig for testing impedance so I used cheapy bits and my ears. Started using an online XO calculator and the nominal imp of the speakers. I got a cap above and below the one specified and three coils so I could just unwind them a bit. The coils were spot on and the caps were later changed for good ones but I didn't notice any difference. Cheap amp and drivers wouldn't have helped there I guess but yeah, I would take music now over a theoretical perfect setup (that you will probably tweek anyway) one you can afford the bits. Get your hands dirty with whatever you can afford now and you'll be able to learn what you do/don't like for the future. Also, are you going to experiment on bits you sold your soul to buy or on easily replaced parts and you will need to experiment to build knowledge of speaker building.