The making of an RE604 Amplifier

First of all, when you read this page, be sure that if you start making experiments with tube amplifiers, you have to handle with high voltage and life danger!!!!!!! Don´t do this kind of work if you have no or not enough practical electrical knowledge!!!!!

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I will show you here how i make an amplifier from the beginning till finishing.
So i hope you can see and read useful helps. If you see something you dont understand, please write me at j.haindorfer@eduhi.at
It all starts with the idea of which tubes i will like to use. Here I use RE604 DHT Triode with EF37A driver and 5Y3GT rectifier. I look for the parts I will use and put them on a Plate for finding right positions. Here I use a copper plate with 2mm thikness. You see I make crosses for drilling and write the diameter to it.

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Drilling and jigsawing is not to difficult if you have right tools. It takes time.

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Polishing

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For edging the plate I go to a metal working shop. They do this very exactly.
Some of the holes which I need later, like the screw for the kathode reseistor or the Grid wire for EF37A and so on.

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I start now placing the parts.

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When you have all parts in the right postion you can start to wire. It is always a question which kind of wire you use. This time i used cotten encased double isolated copper wire. Its most important to find clear ways to check every connection and to solder effectively.

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First testing and measuring

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At a friends place I do the woodwork. Its from my plumtree which had to be cut down 20 years ago. I love this wood. Finished with hard oil the wood starts to fire up very nice coulors.

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the sidewalls without hard oil

the punched bottom plate to protect from electrical shock.

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Finished with hard Oil and ready to play

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