Supro Thunderbolt Amp - How to Replace the Speaker - Tube amp

In this video, we'll replace the speaker in a vintage Supro Thunderbolt amp. The original Jensen speaker failed, so I replace it with a new Supro TB15 made by Eminence.
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Let me start by saying: If you don't know how to properly and safely work on a tube amplifier, do yourself a favor and don't remove the amp chassis from the amp. There are lethal voltages inside. Don't touch anything inside the amp chassis. It's easy to replace the speaker by removing the speaker baffle, and then replacing the speaker.
As an amp tech, I wanted to make sure nothing suspicious was happening inside, so I removed the amp chassis. This also gives the viewer a better understanding of what's going on inside their vintage amp, without taking their own apart.
I begin by removing the tubes from the amp.
More below, as always:
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