Saturday, January 31, 2015

AMPEX 620 Monoblocks

These are out of my Ampex 423 console. I am about to start restoring. These little 6V6 monoblocks power some version of LE8's or D260's. They work but have a little hum going to do a simple recap. The Ampex it going to be bluetoothed to the wifes iphone so she can play some tunes in style.

8 caps each and a multisection lytic. Not going to do any mods but just make it safe for daily use. 

Friday, January 30, 2015

Thursday, January 29, 2015

Wednesday, January 28, 2015

A Hi-Fi Primer Part 1 & 2 - 1956

An early primer on Hi-Fi. I haven't cracked open a modern Hi-Fi magazine in many years. They usually give me a rash. Curiosity may get the best of me because  I'm curious what sort of instructionals they have. Will there be any articles on Hi-Fi? Stereo? Or will it be how to dial in that 66.6 surround sound system.... < /RantOver > 

Monday, January 26, 2015

Audio Development Co Filament Transformers - What to do?

My good friend Chris dropped these by my house a while back. Not just one very nice filament transformer but two. I went through the combinations of tubes I could light up with it and I got very distracted quickly...
6.3V   3.1A
6.3V   2.5A
6.3V   .45A
6.3V   .30A
5.0V   2.0A
5.0V   2.0A

Friday, January 23, 2015

Retro Hi-Fi Girl Friday

Not retro but I don't care. Look at that clean work. Superb!

Wednesday, January 21, 2015

Western Electric - Quality Counts

It has been a while since I posted a Western Electric ad. Here is one feature a small segment of their products. Good stuff.. The 713 driver was used on early Klipschorns with the K5 horn. That would have been a two way system.

Monday, January 19, 2015

How to Build A Universal Audio Amplifier And Power Supply - Radio News 1930

Another great Radio News article this one on building a universal power supply.

Sunday, January 18, 2015

Electro Harmonix 300B Tubes Being Made - Russian Factory

Great video of the Expo-Pul factory producing 300B tubes. Who is Expo-Pul? They make tubes for Sovtek, Electro-Harmonix, Tungsol, Svetlana, Mullard and others.  

They had a bit of trouble a few years ago. Here are a couple interesting stories regarding the factories history. Articles may be a bit older but a good bit of recent history. They picked on the wrong guy.

Friday, January 16, 2015

Wednesday, January 14, 2015

CBias Resistors Their Placement and Value Radio News 1930

Great lesson from 1930 on selection and importance of bias resistors.

Monday, January 12, 2015

Vintage General Radio 1551 SPL Meter

Want to measure in style then you need one of these General Radio 1551 SPL Meters. The radio shack may be light weight but it ain't got no style. 
forget about it

Sunday, January 11, 2015


Talking Heads was one of those bands that I love from first listen. This concert is superb I recommend chilling out and watching the entire show. At this point they had been together since 1975.

From the Byron Dept Of Internet Research

Friday, January 9, 2015

Wednesday, January 7, 2015

What Makes An Amplifier Sound Good Part 2

Early 60's article by Ken Gilmore on what makes an amplifier sound good.

Monday, January 5, 2015

What Makes An Amplifier Sound Good Part 1

Early 60's article by Ken Gilmore on what makes an amplifier sound good.

Saturday, January 3, 2015

Hellllo 2015

Ran speaker wire in wall in my music room so I could move my equipment from between the speakers.

2015 is going to rock!

Complete 2A3/45 stereo amp by the end of January.
Build WE421A stereo amp.
Build modern Brook 12A clone. 
 Veneer my Garrard 301 Plinth.
Veneer Jubilee speakers.
At least get a schematic complete for line level crossover for Jubilee system.

I just thought this was funny as hell........
Thanks to Chris, Kenny, Jeffrey, Dave, Joe, Tim, Jim, Terry, and JC for the encouragement and help this year. Wouldn't be this far without you.

Friday, January 2, 2015

Thursday, January 1, 2015

Installation Of The Month 1961

This guy put together a killer system in 61..