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EF86 preamp by Jimmy[_8_]
This is the circuit diagram of a EF86...
February 7th 14 12:01 PM
by Patrick Turner Go to last post
5 1,762
Long tail differential pair?? Who has circuit like that? by Patrick Turner
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...
February 7th 14 11:26 AM
by Patrick Turner Go to last post
0 1,463
Help find power transformer for project by [email protected]
Hello. Do you still have that Stancor PA-8421? Francis
February 4th 14 08:43 PM
by hugeshows Go to last post
1 1,332
Acoustech manuals,anyone? by [email protected]
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 >...
January 9th 14 10:18 PM
by [email protected] Go to last post
0 1,432
9 Attachment(s) Low Cost SET Amp for Newbies by John L Stewart
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...
January 8th 14 04:09 PM
by John L Stewart Go to last post
1 2,011
The tube power amplifier vs. solid state by steveaudio
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...
January 8th 14 08:57 AM
by [email protected] Go to last post
4 1,769
What ever happened to Steve Bench? by [email protected]
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...
January 7th 14 06:07 AM
by [email protected] Go to last post
1 1,459
Test for access by patrick-turner
Just seeing if I can reply via Chrome, because IE and Firefox no longer give me access to rec.audio.tubes Patrick Turner.
January 6th 14 01:08 PM
by HpW-Works Go to last post
1 1,469
ISO Gintaras Sakenas/KW Tubes by David Anderson
I bought some capacitors on eBay from Gintaras a few weeks ago and sent him payment, but I haven't gotten any response from him via e-mail. Has anyone been in...
December 10th 13 09:41 AM
by [email protected] Go to last post
8 2,755
2 Attachment(s) Wobulator by John L Stewart
Aw Yes, the wondrous Wobulator! Patrick mentioned a very useful piece of test equipment. I built one around 1956 to be used to align IF Transformers in AM...
December 8th 13 10:53 AM
by Alex Pogossov Go to last post
5 1,974
Difference between Genalex KT88 and Genalex Gold Lion KT88 ? by Regats
What is the difference between original production Genalex KT88 tubes and original Gold Lions? - The ones made by GEC - Not interested in reissues. Also,...
(Multi-page thread 1 2)
December 7th 13 05:19 AM
by HpW-Works Go to last post
18 5,230
Toob Amplified PC Speakers by Tim Williams
So I guess it really comes down to... what do you want? Can you follow a schematic? (I should hope so... :-p ) Is that good enough for you? Do you have...
December 3rd 13 10:38 AM
by Tim Williams Go to last post
0 1,634
4 Attachment(s) All Triode PP UL Amp Secret Revealed by John L Stewart
That circuit I put on Audiobanter is something I looked at about 10 years ago. I had seen in the old tube manuals back more than 60 years ago some rather odd...
December 1st 13 11:39 PM
by John L Stewart Go to last post
3 2,267
2 Attachment(s) All Triode PP UL by John L Stewart
Here is something to puzzle over in your quitter moments! Cheers to all, John L Stewart
November 22nd 13 09:37 AM
by patrick-turner Go to last post
5 1,861
phase shift audio oscillator 5Hz to 100kHz++ by patrick-turner
There is an artical posted here about tubed phase shift oscilators at : - ...
(Multi-page thread 1 2)
October 27th 13 09:47 AM
by patrick-turner Go to last post
10 3,305
Compton reverse log pot, tubed Wien Bridge oscillator by patrick-turner
In a previous post about my radical surgery performed on an BWD Electronics 141 oscilator, I mentioned I had troubles with the original Compton pot used to...
(Multi-page thread 1 2)
October 15th 13 10:14 AM
by patrick-turner Go to last post
10 3,790
What to do about poor service by Larry Crimson
More than 7 years ago I sent a Fisher 500-C to Al Pugliese of the Fisher Radio Corp to be repaired. I have pleaded with him to send the radio back to me...
(Multi-page thread 1 2)
September 27th 13 10:45 PM
by Phaethon Go to last post
17 3,090
Tuning gang C value for Wien bridge oscillator by patrick-turner
In any Wien bridge oscilator equipeed with a variable tuning capacitor, there are limits on performance at higher H above about 200kHz unless the capacitance...
September 26th 13 12:23 PM
by patrick-turner Go to last post
0 1,641
1 Attachment(s) Wien Bridge Oscilator, 1Hz to 1MHz. by patrick-turner
Hi folks, people, demons and anyone else hangin around. I have posted up another page for as 1/2 decent wien bridge oscilator which has 6 F ranges to give 1Hz...
(Multi-page thread 1 2)
September 7th 13 12:12 PM
by patrick-turner Go to last post
16 3,201
2 Attachment(s) Differential input stage in PP tube amps by patrick-turner
Me again folks. I wrote a new page about using a differential input pair of triodes for a PP amp. See my page at...
(Multi-page thread 1 2)
August 26th 13 07:56 PM
by GRe Go to last post
13 3,322
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