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Audio Research VM220 and VT200 amps have serious design shortcomings...... by Patrick Turner
Hi all, I have a pair of VM220 200W monoblock amps here for a service, and a stereo amp, VT200, 200W per channel. Both sets of amps belonging to two...
(Multi-page thread 1 2 3 ... Last Page)
May 5th 12 09:51 PM
by kostas Go to last post
42 11,866
Full Music 211 tube failure by charles rollo
Recently my amps trannies were melted when the 211 failed. With less than 150 hours on the tube but past the 30 day warrantee. I bought the tubes in Oct....
(Multi-page thread 1 2 3)
August 27th 10 10:15 AM
by Patrick Turner Go to last post
21 10,031
4 Attachment(s) "Beam Me Up, Scotty" (Beamus) AM Transmitter -- first prototype by flipper
Okay, so I like to make up cutesy names :) I wanted to do 'something' with a 6ME8 so I tried using it for an AM transmitter and the first prototype works...
(Multi-page thread 1 2 3 ... Last Page)
July 16th 12 03:07 PM
by Patrick Turner Go to last post
85 8,912
Restoring a Sherwood S-5000 by [email protected]
Hello all, One of my favorite tube amps has to be the Sherwood S-5000. It's a little gem of an integrated amp that is quite easily underestimated. Most...
(Multi-page thread 1 2 3 ... Last Page)
December 14th 16 10:09 PM
by [email protected] Go to last post
43 8,822
9 Attachment(s) VLF stability in Williamson-type amplifiers by Engineer[_2_]
This one's for Patrick in Oz. Hi, Patrick, I've looked at your "standard" VLF stabilization coupling network for this amplifier class (0.05 parallel 1Mohm,...
(Multi-page thread 1 2 3 ... Last Page)
July 18th 11 11:23 AM
by Patrick Turner Go to last post
92 8,756
Conrad Johnson Premier Two: restoration by Circuitsmith
Its not often that genuine high-end audio equipment crosses my workbench, so Im sharing my experience of the special occasion. Im not going to wax poetic...
(Multi-page thread 1 2 3 ... Last Page)
March 19th 10 08:21 PM
by Boon[_2_] Go to last post
128 8,636
NFB windings, was there a US style and UK style? by mike s
On Thursday, May 19, 2011 1:52:19 AM UTC+1, Patrick Turner wrote: > On May 18, 7:54*pm, mike s > wrote: > > I have a couple of output...
(Multi-page thread 1 2 3 ... Last Page)
June 4th 11 01:58 PM
by Patrick Turner Go to last post
73 8,228
1 Attachment(s) 6080 audio amp? by Engineer
Hi, Vacuumlanders. Just a speculation but has anyone built a P-P audio ampliifier with the 6080 (6AS7) tube? (twin power triodes used as the series element in...
(Multi-page thread 1 2 3)
February 9th 11 04:12 PM
by John L Stewart Go to last post
25 7,860
Yaqin MC10L by [email protected]
I received this amp yesterday from Hong Kong. You can get it from ebay at around $500 ~ $600. It arrived safe. First relief. I tested it in my friends house...
(Multi-page thread 1 2)
August 12th 08 07:47 PM
by Bob Perilstein Go to last post
12 7,503
Music Man HD-130. by David Farber
I received this Music Man HD-130 amplifier with the complaint that it hums. The four output tubes are 5881WXT. The owner replaced the two main filter caps...
(Multi-page thread 1 2 3 ... Last Page)
May 16th 06 03:41 PM
by Jon Yaeger Go to last post
37 7,322
What's this ground symbol? Resistor? by Lumpy
Help with this symbol and component, please. Peavey Classic 20 guitar amp... Schematic: http://www.blueguitar.org/new/schem/peavey/c20schem.gif PC Board...
July 17th 05 07:51 AM
by Lumpy Go to last post
4 7,170
6J6 driving EL84 by tubegarden
Hi RATs! OK, 6J6 driving 6BQ5 P-P. Using IXYS constant current source under the shared cathode of the 6J6 :) Merry Christmas and Happy New Ears! Al
(Multi-page thread 1 2 3)
December 20th 07 08:40 PM
by tubegarden Go to last post
26 7,161
Appeasing Carbo Doxy, was Al Bore cancels Nopenhagen lovefest forhis global warmies by Andre Jute[_2_]
On Dec 8, 2:32*pm, Ben C > wrote: > On 2009-12-08, Qui si parla Campagnolo > wrote: > > > The earth > > IS getting...
(Multi-page thread 1 2 3 ... Last Page)
February 24th 10 04:54 AM
by Les Cargill[_2_] Go to last post
289 6,841
ECL86/6GW8/PCL86/14GW8 pentode section triode strapped data by Tom Schlangen
Gentlemen, ECL86/6GW8 or PCL86/14GW8 pentode section triode strapped data now is available...
December 13th 04 10:15 PM
by robert casey Go to last post
7 6,661
Building a new shortwave tube radio by [email protected]
With the survivalist market as well as the DIYers who would build a kit I have given thought to the idea of building a new tube shortwave receiver as a usable,...
(Multi-page thread 1 2 3 ... Last Page)
December 26th 11 02:00 AM
by [email protected] Go to last post
126 6,592
Utralinear SE amps with EL34/6CA7. by Patrick Turner
Its a little known fact that one may take advantage of the UL connection even when you don't like to. Most ppl think the UL connection for EL34 always means...
(Multi-page thread 1 2 3 ... Last Page)
April 9th 10 10:19 PM
by Ian Iveson Go to last post
31 6,534
CRC vs CLC? by lazyadm1n
Not to open a bag of worms or anything, but what (if any) are the advantages/disadvanteges of a CRC filter vs a CLC filter in a power supply? Asides from the...
(Multi-page thread 1 2 3 ... Last Page)
November 2nd 04 11:30 AM
by Patrick Turner Go to last post
40 6,466
CCS for Mullard phase splitter by Jim
Hello, Can someone explain to me how a solid-state constant current source would be added to a Mullard-style LTP phase splitter? My amp is similar to an Eico...
October 24th 03 11:57 PM
by Patrick Turner Go to last post
6 6,044
PHONE PREAMP by ec
Hi where can i find quality tube phono preamp schematics? Thanks ec
March 11th 07 12:47 PM
by coffeedj Go to last post
8 5,985
Which 6550 for SVT reissue? by roger
Hi all, I'm intending to retube my ampeg svt classic (reissue) with either sovtek 6550we's or the electro harmonix 6550's. They're both priced about the same,...
(Multi-page thread 1 2 3 ... Last Page)
February 29th 04 11:38 PM
by [email protected] Go to last post
172 5,964
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