Don't fret too much. That initial shock is real, looking back and forth between a bag of loose components and a wiring schematic that your trying to decifer for the first time. Your not deficient for feeling a little perplexed. There are a good handful of people on forum here that will lend you some assistance. I've built this one a couple times for others and it's a fairly straight forward assembly. Not too many parts. Lots of room in the cabinet so you don't have to crowd things onto a really small crossover board.
If the photos that you see in the links that Hobbs added for you aren't enough to help you feel confident with the layout, your welcome to contact me directly and I can walk you through some of it and possibly send you a somewhat to scale drawing of a component layout.
I've kind of been toying with the idea of creating a tutorial to help people convert a wiring schematic into an actual layout of physical components, and then or even separately, showing how to work from a layout, frontwards and backwards to confirm it's correct to the schematic. I think that explaining some general concepts would be enough to help many people, but at same time, there will always be others that still need additional assistance.
For someone new to audio circuits, including those with some electrical background, some aspects really get confusing, such as combining multiple circuits, combining multiple components that branch in 3 or more directions (such as the incoming positive line component branching to a driver terminal and also to a shunt component that goes to the negative line or sometimes even two parallel shunt components, each going to the negative). Another
aspect that causes apprehension for some people is trusting the combined negative inputs and multi-driver outputs, resulting from having combined multiple circuits. As example, when a combined 3-way circuit connects negative input to the negative terminal of 2 drivers, and positive of a third driver, it is hard for some to trust how that combined bundle, which is also connected to the crossover, is able to get the right info to the right places, when everything seems interconnected or overlapping.
Fortunately you don't have to become axpert in all of that. Look through the links Hobbs provided and then after you've spent sonme time with it and have some specific questions, people will answer them here for you.
Elon
Ezeecrossovers@gmail.com