I recently posted up a new page on 100W UL AB1 monoblocs with new schematics of amps using either 6 x EL34 or 4 x KT120. Included are PSU and protection...

So the Ukraine has a few troubles brewing and USA has threatened sanctions. I heard this news a awhile back and I could not help but thing Russians making...

Hello, Im new to the group. Has anyone built an amp. with or played with 5B 255M?. I have a load of these valves and would like to put them to use. The...

Hi, is anybody out there with the schematics of this strange beast designed by David Manley? I tried to contact EveAnna Manley and she answered that I had to...

Since it seemed more appropriate, I posted the following on rec.audio.pro, but I did not get any replies: Hi: In my vintage hi-fi travels, I managed to pick...

Recently I worked on a Fender Deluxe Re-issue which makes 21Watts at clipping with 2 x 6V6 in output driven by 12AT7 LTP. The input for clipping at signal...

This note describes a simple, low cost power supply improvement. It allows reduction of the power frequency ripple component (60 Hz in North America & 50 Hz in...

I need to restuff a can capacitor. Could someone tell me an easy way to do it? I've never done if before and dread is setting in. Thanks for your...

Hi all. At 66yo, I have automatically been granted the license to be a GRUMPY OLD MAN, acronym GOM, aka Experienced Curmudgeon or EC. Why? because NERDS rule...

Here are a couple of spectrums showing PS Ripple Sidebands on program material. One with the CLC filter in the cct while the other is with the L shorted. The...

I've been asked by a couple of locals in my town to make their guitar amps sound better. One has had 20 years as a working muso and the other teaches music and...

Hello all, Since Phil Allison basically dared me to 'ever post here again' I thought I would do a double edged post, simultaneously contributing something to...

This is the circuit diagram of a EF86...

I have no idea if this reply post will appear at rec.audio.tubes because of recent history with not getting access via Google from where I am in Australia. On...

Hello. Do you still have that Stancor PA-8421? Francis

On Friday, August 20, 1999 3:00:00 AM UTC-4, Mjzuccaro wrote: > Guys: > Okay,this is OLD ss stuff,and maybe some of you will remeber Acoustech from the >...

Here is something to get the conversation going again! If one throws enough money at a project, then most anything is possible. For this project I was looking...

A tube power amp has different characteristics is from a solid state amp which will influence its performance with vintage or new speakers. The limiting...

Hello all, Good to see some familiar names around here. I've been gone for quite a long time. Before everyone starts trying to figure out who I am, I was...

Just seeing if I can reply via Chrome, because IE and Firefox no longer give me access to rec.audio.tubes Patrick Turner.