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GZ34 by Frank Lucas[_2_]
So I've decided to buy two brand new JJ's GZ34 for my two mono 2A3 amps. JJ's are cheap and I thought that if they were to last a few months before selling...
April 26th 17 01:15 PM
by Peter Wieck Go to last post
4 90
Precision 900B tube tester,unique? by [email protected]
On Monday, May 19, 2003 at 8:45:00 AM UTC-7, Luis Pla Revuelta wrote: > Hi > I am restoring this tube tester from Precision Instruments. > This model looks...
0 34
Tone Burst Testing by Phil Allison[_3_]
Hi, my colleague Rod Elliot has designed a neat, tone burst gate that you can build yourself quite cheaply. It can produce bursts of 1 to 32 "on" cycles...
3 821
Replace plate load resistor with plate choke by Jimmy[_8_]
HellO! I've read posting on other forum and it draws my attention. IS the DCR of the plate choke should be equal to the resistive value of the plate load...
April 12th 17 09:34 AM
by Patrick Turner Go to last post
5 242
BIAS regulation Electro Harmonix KT90 vs Jinvina KT90 by Luigi Vogliobene
Hi to all, I am new in this forum, I own a MingDa MC368BSE audio amplifier and it is time to replace the final tubes, I was suggested to replace the original 4...
April 5th 17 07:37 AM
by Patrick Turner Go to last post
7 295
1 Attachment(s) What is the most powerful audio output tube? by [email protected]
What is the most powerful audio output tube, as far as RMS wattage output? I have gotten some powerful sound from four 6L6 tubes in push-pull parallel. but I...
(Multi-page thread 1 2 3 ... Last Page)
April 5th 17 07:09 AM
by Patrick Turner Go to last post
40 1,334
Scott LK150 by Peter Wieck
I am looking for a clean copy of the original assembly manual for a Scott LK150. My unit was assembled with Kynar wire, I would like a do-over. Thanks in...
March 25th 17 06:50 PM
by Peter Wieck Go to last post
0 120
What type of capacitor should I use? by [email protected]
What type of capacitor would be the best match to replace the old paper/wax caps in old tube gear? I am not referring to the electrolytics, those I know need...
(Multi-page thread 1 2)
March 11th 17 06:02 AM
by Jim Mueller Go to last post
11 322
Annual Spring Cautionary Post - 2017 by Peter Wieck
All: I have changed the format a bit, and put all the links at the beginning. I am also sending this out a bit earlier than usual by about 2 weeks as we have...
1 250
Which Mesa guitar amp has 12 power output tubes by [email protected]
There is supposed to be one of the Mesa guitar amps that uses 12 power output tubes in some sort of push-pull parallel - parallel manner. I'd like to look at...
March 2nd 17 03:27 AM
by Big Bad Bob Go to last post
2 212
Best tubes for Jolida SJ-502 by Peter Wieck
Somewhat it depends on which Jolida you have. There are amps made and assembled in China, and those final-assembled and tested in the US. The latter are the...
February 27th 17 01:11 PM
by Peter Wieck Go to last post
0 182
Best tubes for Jolida SJ-502 by [email protected]
On Friday, March 6, 1998 at 3:00:00 AM UTC-5, Douglas Greig wrote: > Hello, > > I bought a Jolida SJ-502a last year. I am sure that a lot of you > consider...
0 166
My Mechanic says I need a Tube in my Tire by [email protected]
My mechanic says I need a Tube in my car tire. I told him that I'll bring him one tomorrow. I have a box of old tv and radio tubes as well a a few picture...
February 7th 17 01:17 AM
by D. Aaron Sawyer Go to last post
4 412
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)
43 7,381
Grundig TK 46 by Dmitry Giltsov
Hello Mr. All, I sucessfully restored playback on my Grundig TK 46 all tube tape recorder from early 60-s. The right channel in recordings is distorted....
December 14th 16 07:55 PM
by Peter Wieck Go to last post
1 383
1 Attachment(s) otl amplifier 65W by [email protected]
Build OTL = transistor P: 65W Vin: 0.775V Rin: 400 kΩ BW: 30Hz - 17kHz 0,2% CMRR: 70 dB i don't know where to start. Help me please :(((
November 20th 16 10:34 PM
by Big Bad Bob Go to last post
6 727
old tube phonograph questions by [email protected]
On Saturday, October 15, 2016 at 12:17:14 PM UTC-4, wrote: > > My parents have one of units that was purchased in the 50's under the...
October 27th 16 01:52 AM
by Big Bad Bob Go to last post
5 740
uTracer - tube curve tracer [kit] by Patrick Turner
You have chatted about tube curve tracers....... after having a close look at the web site, it's a somewhat simple curve tracer design, though not the way I...
October 13th 16 12:33 AM
by Big Bad Bob Go to last post
4 613
uTracer - tube curve tracer [kit] by Big Bad Bob
On 09/01/16 13:57, Peter Wieck so wittily quipped: > On Thursday, September 1, 2016 at 3:25:19 AM UTC-4, Big Bad Bob wrote: > >> >> I've been kicking around...
September 10th 16 07:24 PM
by Big Bad Bob Go to last post
3 598
Is EnnyWunne around? or Haz Evvree Wunne died? by Big Bad Bob
On 08/10/16 17:47, Patrick Turner so wittily quipped: > I probably need to try this test to see if m7 W10 PC works with Google Groups. The PC used to be W...
August 22nd 16 09:15 AM
by Big Bad Bob Go to last post
0 668
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