Tag Archives: Tubes

Construction Toys In The Attic

A DIY’d Eico 615 Adaptor

This is a quick one.

I’ve recently been looking into playing with directly heated triode single-ended triode (DHT SET) amps, particularly 45s, 2A3s, and their cousin, the 6B4. So I’ve been buying them piece by piece on eBay, as inexpensive parts pop up here and there. The upside is the low low price! The downside is that my ‘modern’ Eico 667 tester doesn’t have the old UX4 socket. Eico did make an adaptor, however–the 615:

Eico 615 Tube Tester Adapter

Eico 615 Tube Tester Adaptor

It isn’t a terribly easy thing to come by these days, nor cheap when you can find one.

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Restoration

The Scott 222C Restoration, Part 2

Welcome back! You can find Part 1 here.

When I left off, the chassis had been gussied-up and the transformers were re-painted. Before I reassembled it all back together I thought that having the bare-chassis, free from the all weight added by the transformers, would be the best time to electrically refurbish the amp. Charles Hansen ran some excellent articles about completely-redoing a 222C in AudioXpress, and Craig Ostby of NOS Valves was always willing to lend his knowledge.

 

Clean!

Clean!

 

And here it is! All I have to do is test everything…

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Construction

A Dual-Mono AKAI M8 SE EL84 Amplifier, Part 1

This project really picked up steam in October 2012.

A couple years before this project came about, I built a box as the base for my second RH84 amplifier (design can be found here [opens in a new tab]) since my first build was based on the chassis of an unremarkable Claritone console amp (I assure you, no Project G stereos [opens in a new tab] were harmed in development of that project). The box was put together using red oak sourced from the clearance pile at Rona, cut on a not-quite-square compound mitre saw, and a table saw was used to rip the 6061 aluminum plate down to size. In the end the openings were not quite regular and I had to file the plates into fitment, but it turned out well.

 

Made form Red Oak

Made from red oak and 6061

 

Right, so I’ve got the box.

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Restoration

The Scott 222C Restoration, Part 1

I bought it in early 2010 described as a fixer-upper, with no photos, and a low price. I was egged on by those more knowledgeable than I, and I’m not one to turn down a challenge.

 

Bought based on this image.

Bought based on this image.

 

Plus, it was my birthday.

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