this post was submitted on 30 Sep 2024
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My background is in audio engineering & live sound, so I'm not sure about the specifics of those ports. But there is zero risk of frying anything with the signal generated from a guitar, even an acoustic w/preamp. You would need orders of magnitude more power to do any damage, like if you plugged the 1/4" inch into a power amp designed for passive speakers (which can take the same 1/4" input as a guitar for some stupid reason.) I have to imagine that the only interaction happening within the CRT is directly with the built in speakers, so even if you did that crazy thing the speakers would blow but the video might still work (kinda want to see what would happen here lol, we need one of those YouTubers who like to break things.) For you though, the worst that would happen is the signal getting distorted and sounding horrible. My guess is either port would work granted you have the right adapter, and I actually think you're more like to hear something from an acoustic because of the slight boost from the preamp. All this to say there's nothing to worry about, but it's a lot of work for something silly, I'm sure you could make the world's worst amp with it if you try hard enough, seems like it should work to me.
Oh, I think you misunderstand. I'm not sending the audio into audio, I'm sending audio into video. So the signal from the guitar goes into the video connector (there aren't any built-in speakers). Why? It might look cool.
Oh! Actually I've seen something similar done before with a modular synth! There's this awesome Instagram profile called Ellingson.tv with a guy that uses modular synths to manipulate CRTs and combines that idea with a "Pepper's Ghost" hologram effect. Highly recommend checking it out
I also think this won't hurt the CRT at all
Alright, thank you!