For being a first timer, I thought they were pretty easy. I did pay someone to build the cabinet because I didn't have the tools and clamps. Could have built the box on my own fairly easily. I had him quote me and it would have honestly cost me as much for the clamps and tools as I paid him for the box. I couldn't believe that clamps cost $30-$40 box each, that blew my mind. I did everything else. I would have not been able to do the x-overs without the help of a friend...simply because I don't understand electrical schematics. If you know what you're doing the work is actually really easy.If I could have been able to tell where all the wires were connected from Mark's page I could have probably made it on my own. I just couldn't quite tell where each wire was connected. Jay1 put me at ease a lot too as I was not very confident at first since I had never done it before. I could build another pair very easily. Even though I don't know what all of the stuff on the x-over does...it's very easy to assemble when you know how each part is supposed to be hooked together. Thanks for the compliments.