it has now occurred to me that I may be suffering from science-related memetic disorder
- February 24th, 2016
- Posted in diy . touring equipment
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I realised this morning that I could totally add Bluetooth to this monster of a stage monitor I’ve been rebuilding and upgrading. I’ve made it self-powered and compliant to modern specs, why stop there? It’s portable! It even has a handle!

48 pounds! Two pounds less than a standard bag of concrete! PORTABLE!
I mean, okay, sure, I’d need a second one to deliver full stereo, but I could do that because I have two of them and could put on another jack to share channel two over to the second speaker and and and IT COULD WORK!
Someone please put a towel over my head.
This post is part of a series on restoring infamous vintage stage monitors. Spoiler: they made good, in the end.
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Though it’s been a while, I have restored several old ’30s and ’40s radios (my favorite was one that looked like a miniature roll top desk and had the “magic eye” vacuum tube for tuning). Some have an audio input (not many)-I had a homemade AM “rebroadcaster” (one transistor, old-school variloopstick tuning -a gizmo with a fixed capacitor,and a ferrite slug that moved on a threaded rod through a coil). This allowed me to use old radios with newer (for the mid 1970s) stuff while leaving the radio all original.
How was the sound? Did you have good audio frequency range with that kit?
I don’t think that would work as well here – particularly not at the Lair – just because of all the extra RF noise around us.
Sounded sort of tinny, but not as bad as you would think. The transmitter’s tuning would ‘wander” a lot, as well. Its main advantages were that it was cheap, simple, and didn’t require any modification to the old radio.