In another thread Phil Allison commended Quad 405. Its typical schematic is he http://schematic.narod.ru/Audio/semi/Amp/Quad405-2.gif Assuming that Phil...

I have a new website page on RCA High-Fidelity Orthophonic 30W amps which originally had EF86, KT66, and GZ32. See...

Hi all, I have a new web page for matching speakers to amplifiers to give a better match than may be available, ie, make a 2 ohm speaker look just like a 16...

** Shame about what you ACTUALLY posted and then SNIPPED out of your reply to hide it. What a despicable, bloody LIAR you are. Then you go and make it...

Hi Phil, I post via Coogle and I cannot reply to anyone's post, only to my own after clicking 'post reply' Its something I don't get about Google, or my...

Phil idioticated..... ** ROTFL !! Having a very stiff enclosure ( eg a concrete pipe) INCREASES the amount of internal sound reflection. Filling the...

Phil Allison May 26 Other recipients: "patrick-turner" > > Hi all, another page for everyone to argue about at my website, >...

"patrick-turner" > > Hi all, another page for everyone to argue about at my website, > http://www.turneraudio.com.au/loudspeakers-tannoy.html > This one is...

On Monday, January 3, 2000 4:00:00 PM UTC+8, wrote: > For Sale:I am selling my collection of Vintage NOS & Used tubes. Some Brands include...

I've posted up an additional schematic for a Hybrid amp for 39Watts class A which has EL34 driving complementary N&P source followers helped along by common...

Hi! I posted this on my friend's behalf. Thanks in advance for your advice!! "I have a series regulator board on hand that comprises 6080, 6SL7 and OB2. Can I...

I think I'll never see a poem as lovely as a tube. A tube whose hungry cathode is pressed against the Earth's sweet flowing current. A tube that amplifies God...

Please check the updated list in the end of this thread. Thank you!

I have added another page to my website which explains the analog gear needed to test amplifiers, including 5 schematics...

The original of this article was published in AudioXpress magazine, sometime in 2001. I had to remove the parts list as the post was too long. Try that...

Here is a different kind of test on the PP 6V6 AB2 amp that I posted a while ago. And an updated schematic. The PS is a Hammond 271X into a FW CT, 1N4007s into...

This article was originally published in the July 2001 issue of AudioXpress magazine. It came to mind again the other day when Alex P mentioned the Sziklai...

Hello, I uploaded another article. http://www.valveradio.net/en/home/audio/darlington.html Though it is not about vacuum tubes, I will be referring to it...

In figu http://1fcr.com.ar/classB.jpg you can see a very interesting diagram of the audio modulator of an old AM Gonset transmiter. A 12AT7 as voltage...

Hi all, if there is anyone at all reading anything, and not bored by the world and / or amplifiers. I've just posted up a page on Hybrid amplifiers where I...