That's why I didn't use terminals. You could do brass bolts through the box too. Just a pos and a neg bolt that goes through the box and hook it up on each side. Can take a lot of power and wouldn't have to worry bout em melting. I can get you a link in a min. Hold on.
I really don't want to use the terminal cups because of what I've heard about them. Especially the melting stories lol. Basically I'd bridge them in the box and then run the speaker wire out the port and to the amp. Sound about right?