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Sanctions against Russia over Ukraine. by Patrick Turner
Is the end coming to Russian tube manufacture because it seems Russia wants to stop Ukraine from becoming economically aligned to the West? What will happen...
May 1st 14 07:12 AM
by Patrick Turner Go to last post
2 909
Marantz 7--Why so expensive?? by [email protected]
On Tuesday, October 20, 1998 3:00:00 AM UTC-4, David Anderson wrote: > Hi, > > I don't want to start a price-flame war, but I'm simply curious as to why >...
April 24th 14 01:15 PM
by Frank Lucas Go to last post
2 1,118
AA11 Heath preamp users??? by [email protected]
Hi Dave I know that this an old posting. Curious to know if you still have this mod up for grabs before mine gets restored. Thanks, Kevin
April 22nd 14 11:22 PM
by [email protected] Go to last post
0 821
100W monobloc amp details by Patrick Turner
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...
April 3rd 14 10:21 AM
by Patrick Turner Go to last post
0 962
Sanctions against Russian Tube makers by Patrick Turner
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...
April 3rd 14 10:16 AM
by Patrick Turner Go to last post
0 1,055
5B 255M amplifier? by bigwig
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...
April 3rd 14 10:06 AM
by Patrick Turner Go to last post
8 2,016
VTL 40/40 by Frank Lucas
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...
April 2nd 14 05:04 AM
by Stephie Bench Go to last post
1 940
General Precision Laboratory Preamp? by GerryE123
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...
March 19th 14 08:00 PM
by chreynest Go to last post
1 1,500
1 Attachment(s) Guitar Amp RF oscillation, tube warmer recipe by Patrick Turner
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...
(Multi-page thread 1 2)
March 10th 14 09:26 AM
by Patrick Turner Go to last post
13 2,543
7 Attachment(s) Power Frequency Ripple Reduction in B+ Supplies by John L Stewart
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...
(Multi-page thread 1 2)
March 4th 14 09:30 AM
by Patrick Turner Go to last post
10 2,097
How to restuff a can capacitor? by Edward Morris
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...
March 4th 14 05:25 AM
by Horace Go to last post
7 3,188
LTSpice, guitar amp tone control by Patrick Turner
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...
(Multi-page thread 1 2)
February 28th 14 04:04 AM
by Lord Valve Go to last post
17 2,167
3 Attachment(s) Power Supply Ripple Sidebands by John L Stewart
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...
February 28th 14 02:20 AM
by John L Stewart Go to last post
0 969
Guitar amp tone control calculators by Patrick Turner
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...
February 20th 14 06:37 AM
by Patrick Turner Go to last post
8 1,506
1 Attachment(s) Monster Power Amp by Stephie Bench and Myself by [email protected]
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...
(Multi-page thread 1 2 3 ... Last Page)
February 10th 14 07:38 AM
by hugeshows Go to last post
32 3,909
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 1,243
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
0 957
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
1 881
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
0 930
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 1,326
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