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Low Frequency Mains Noise by Ian Bell[_2_]
On several preamp PSUs I have built in that last couple of years I have noticed the same thing. A very low frequency low level variation in the output...
(Multi-page thread 1 2 3 ... Last Page)
January 20th 09 03:14 AM
by Phil Allison Go to last post
183 4,452
Fingered tweets the little b*%8&^rds by bigwig
Hello, I know this is a bit off topic for RAT but hey. I dicovered a few days ago that one or both of my daughters had taken it into their little heads...
(Multi-page thread 1 2)
January 19th 09 03:57 AM
by bigwig Go to last post
15 1,440
6SN7 et al mu follower distortion by Ian Bell[_2_]
I have just about completed my distortion tests of 6SN7, 7N7 and 6CG7 mu followers using tubes kindly loaned or donated by group members (Thanks Peter and...
(Multi-page thread 1 2)
January 18th 09 01:53 PM
by Ian Iveson Go to last post
19 1,533
FA: 38 NOS 12AY7/6072/6072A Vacuum Tubes by GerryE123
Hi: For auction on eBay, 38 new-old-stock (in original boxes) 12AY7/6072/6072A vacuum tubes. For complete info and photos, please use this...
January 17th 09 02:42 PM
by GerryE123 Go to last post
0 638
FA: GEC B65 Tubes metal base, KT66 Nos by 33-45[_3_]
Rarely seen GEC B65 tubes http://search.ebay.com.au/_W0QQsassZ33-45
January 14th 09 07:21 AM
by 33-45[_3_] Go to last post
0 938
Looking for a matched pair of 12At7s or a matched pair of a substitute tube.. by Cipher
using a little Jolida 102b while my Mastersound is down, want a matched pair of 12AT7s or any suitable substitute pair.. same manufacturer and type,...
January 13th 09 10:21 AM
by [email protected] Go to last post
4 714
What is the least value for kathode / heater isolation? by jaap[_3_]
AVO tube testers test K/H isolation in Mohms. Most new IDH tubes read over 25 Mohms while some heavily abused tubes read 5 Mohms or even lower. Is there need...
January 13th 09 10:18 AM
by [email protected] Go to last post
3 460
Thornston Audio Transformers, need help by Cipher
do they have a website or archive somewhere?? does anyone have info??
January 12th 09 04:50 AM
by flipper Go to last post
2 511
12 vdc tubes by RealInfo
Hi all I am looking for old tubes operating on very low voltage , battery voltage . I need them for portabe batery oerated tube preamps . Any sugestions...
(Multi-page thread 1 2)
January 11th 09 05:53 PM
by Lee Arnold Go to last post
13 859
Kuulostaako jotenkin tutulta? by Kristian Söderlund
S.K.22.05.2008."Pölyttäjien täyskato uhkaa viedä kesän marjat. Omenapuut ja herukat kukkivat monin paikoin jo täysillä, mutta puutarhoissa on...
January 10th 09 08:49 PM
by Kristian Söderlund Go to last post
0 390
HP NC 4200 12" (1,73ghz centrino, 1,5gt ram) by Kyösti Herrmann
Alan arvostuksesta kertoo varsin suoraan se miten alan ammattityöväestö suhtautuu tekemiseensä. Siitä voidaan ottaa esimerkkejä laajasti. Ammattilaiset...
January 9th 09 06:28 PM
by Kyösti Herrmann Go to last post
0 352
imposter warning by ZACK`
he uses your own name against you hes been traced here file:///C:/Program%20Files/Visual%20IP%20Trace/reports/report-20090102-1456-news.tornevall.html
(Multi-page thread 1 2)
January 7th 09 03:13 PM
by GregS[_3_] Go to last post
11 607
New year's resolution by Ian Iveson
How would you explain to a novice how to design a valve amplifier? I see two possible approaches. One way to begin is to establish the purpose of the...
(Multi-page thread 1 2 3 ... Last Page)
January 7th 09 09:17 AM
by Iain Churches[_2_] Go to last post
30 1,705
A proper bicycle for a tubie by Andre Jute[_2_]
On Jan 2, 3:01 pm, John Byrns > wrote: > What sort of bicycle should I purchase? That is one of my three resolutions. Oh, definitely a...
January 6th 09 10:59 PM
by tubegarden Go to last post
1 495
6983 tubes at a good price found on ebay by Rich Klestinez
http://tinyurl.com/8a5gw9
January 6th 09 07:24 PM
by Rich Klestinez Go to last post
0 662
imposter warning correction by ZACK`[_2_]
sorry i know whats going on now, i se what you mean ubout the c: drive. the URL i posted is not showing up on the google groups. the program i use only shows...
January 4th 09 09:12 AM
by ZACK`[_2_] Go to last post
1 480
Menno van der Veen Masterclass by Ian Bell[_2_]
Don't know if anyone is interested but I got this little snippet in the email form Elektor today: http://tinyurl.com/82upa5 He seems to have discovered...
(Multi-page thread 1 2)
January 3rd 09 11:23 AM
by Ian Bell[_2_] Go to last post
14 849
B+ rectifier question by Edward Morris
Hello, I have a McIntosh C22 preamp. I'd like to replace the two diode B+ selenium rectifiers. One lead from the transformer attaches to the + and -...
(Multi-page thread 1 2 3)
December 27th 08 09:50 PM
by Edward Morris Go to last post
21 1,271
The heron at the weir by Andre Jute[_2_]
Today, walking into Bandon across the footbridge, I saw the boss heron sitting watching the weir. Perhaps the fingerling salmon are already swimming out to...
December 27th 08 02:10 AM
by Patrick Turner Go to last post
2 436
Just for triode lovers by [email protected]
On Millett's site is this "new" book: http://www.pmillett.com/Books/Atwood/Langham%201950%20High-Fidelity%20Techniques.pdf Advocates building 2A3 amps-push...
December 26th 08 04:43 AM
by [email protected] Go to last post
0 584
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