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Baxandall tone control, still good? by [email protected]
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...
July 23rd 14 02:26 PM
by [email protected] Go to last post
6 1,844
Quad II question: High B+ a problem? by [email protected]
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...
(Multi-page thread 1 2)
July 19th 14 03:10 PM
by [email protected] Go to last post
17 2,042
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10 Attachment(s) Sequel to Low Cost SET Amp for Newbies by John L Stewart
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...
(Multi-page thread 1 2)
July 17th 14 07:40 AM
by maxhifi Go to last post
10 3,919
1 Attachment(s) One for Pat ..... by Phil Allison[_3_]
** 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...
July 13th 14 10:46 PM
by [email protected] Go to last post
8 1,732
NOS 6LW6s by [email protected]
Hi, I'd like to buy 6LW6 Vacuum tube 20~30 ea. Please make a purchase.
June 24th 14 02:02 AM
by [email protected] Go to last post
0 986
Dynaco MkIV monobloc re-engineering by Patrick Turner
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...
(Multi-page thread 1 2)
June 7th 14 08:14 AM
by Patrick Turner Go to last post
10 2,180
Re-edited page on Quad-II mods. by Patrick Turner
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...
June 7th 14 07:54 AM
by Patrick Turner Go to last post
0 823
WANTED: Jensen G610 by [email protected]
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...
June 2nd 14 09:52 AM
by [email protected] Go to last post
0 886
Quad-II amp info and re-building by Patrick Turner
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...
June 1st 14 03:43 PM
by Patrick Turner Go to last post
2 1,174
Smile
1 Attachment(s) The Twin Coupled Amp, Crowhursts Unity Coupled Circuit by John L Stewart
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...
May 30th 14 11:44 AM
by John L Stewart Go to last post
0 1,119
Smile
2 Attachment(s) McIntosh using 8005 triodes as output by John L Stewart
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...
May 27th 14 02:16 AM
by John L Stewart Go to last post
2 923
3 Attachment(s) Questions for Pat Turner by [email protected]
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...
(Multi-page thread 1 2 3 ... Last Page)
May 24th 14 11:28 AM
by Patrick Turner Go to last post
53 4,944
Old (1933) paper on measuring tube parameters by The Phantom
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,...
(Multi-page thread 1 2)
May 11th 14 05:57 AM
by Patrick Turner Go to last post
12 1,839
A euphonious New Year to y'all — Andre Jute by Andre Jute[_2_]
If there's anyone left here, a euphonious New Year to y'all. -- Andre Jute
May 3rd 14 12:47 AM
by Andre Jute[_2_] Go to last post
3 1,094
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
2 765
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
2 951
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
0 673
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
0 828
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
0 909
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 1,846
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