Looking for advice on building a horn amplifier for a speaker.
I'm looking to build a backpack or box that will have an MP3 player, speaker and phonograph horn. I want it to look steampunk/victorian style. I'm planning on just building a good box, and I'm sure I can find a good speaker out there, but I'm not sure how to attach the horn to the speaker and the audio engineering aspects of that. I'm considering incorporating a tube amp into the mix, and any advice would be appreciated.