I want to build a computer entirely out of tubes, and be able to download and store the entire internet on it. How many tubes do I need?

Hi RAT's, I am returning to some semblance of life, after my little touch of jet lag after my first/last international bidness trip to Buenos Aires, Argentina...

Awesome info, thank you! Never knew about the B52 connection. Please post photos and tutorials on your experience with the offboard mount for your pabst!

On Saturday, 9 August 2014 18:32:16 UTC+10, G.Re wrote: > Triodelington; a composite name the author made up for a triode-darlington.

Anything to report on your 'potato amp' project yet? Cheers, John Stewart

A short note to all:- I was not completely happy with my old page on re-forming Quad-II amps for improved performance. So I have now re-edited all schematics...

Hi all, I posted before while I was fixing up a couple of Quad II amps. After working fine for a number of weeks, one of them just started oscillating like...

Hi! What is the opinion nowadays on using the original tone control by Baxandall, as published Wireless World 1952? Is it still worth incorporating in a diy...

Hello all, long time lurker/sporadic poster here with a question concerning my current project. I recently rebuilt a couple of Quad II's from what was pretty...

At 130 views & counting it seems like we need a follow on. So here it is with more power. This was originally published in the Glass Audio Projects Book, April...

** Hi all tube fans, please enjoy this U-tube made by a most famous British audio guru. Contains all you ever wanted to know about Quad's famous tube based...

Hi, I'd like to buy 6LW6 Vacuum tube 20~30 ea. Please make a purchase.

I have very nearly finished re-engineering a pair of Dynaco MkIV monos. I've replaced PT for 240V mains, and used completely new schematic with 2 x 6CG7 and 2...

Hi all, I've just re-edited my page about reforming Quad-II amps. Much information about Quad-II OPTs, and 2 better drawn graphs for THD Vs...

Il giorno lunedì 5 gennaio 1998 09:00:00 UTC+1, Tom Ronan ha scritto: > Looking for Jensen G610 speakers, a single or a pair. > > I'm willing to trade, or pay...

There is no doubt some ppl would never ever change one single thing in original Quad-II amplifiers. For those who loathe me saying old Quad-II have faults...

For the curious & others here is how Crowhurst's solution to the Unity Coupled circuit works. Crowhurst’s solution is unique. His starting point was the...

Here is another alternative to the output section of the unity coupled cct. This one used a pair of 8005 triodes. Covered by Norman Crowhurst in an article...

Dear Pat, I read your article about Quad ESL and tube amplifier online. I've discussion recently with my friends about stacking Quad ESL 57 and some even...

I recently ran across a 1933 paper by W. N. Tuttle, of the General Radio company titled "Dynamic Measurement of Electron Tube Coefficients". It's a 14 page,...