It works! It actually works!
I assembled my speaker cabinet today! It is not the most beautiful piece of woodwork. In fact, I haven’t even sanded it yet. But I wanted to see if it would actually fit together and make the desired noises.
Next I soldered some standard speaker wire from the jack to the speaker. I thought about using clips to connect to the speaker, but the used speaker already had solder on the tabs. So I cleaned it, added new solder, and hooked everything together. If you ever do this, remember to put a towel or something down to protect the speaker from any splashes of hot solder or slips of the wrist with the hot soldering iron. It would be bad to ruin a speaker.
I left the amp in standby for a long time.
I then flipped the switch from standby to on and heard a pop.
Then nothing. No hiss. No fuzz. Nothing.
I hit a chord on my guitar and slowly turned up the amp’s master volume. Within milliseconds there was sound coming from the speaker.
I muted the strings and it was quiet again. I hit a single note and it sang. I played a quick progression. All the strings rang out. I played a blues riff and bent some notes. They all came out of the new speaker cabinet through the powers of glorious amplification!
Now I still need to take it all apart, sand, and finish the box, but at least I know it works. At least I know it will make sound when I reassemble it in its finished form!