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...

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...

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...

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....

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 :(((

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...

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...

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...

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...

I'm interested in this speaker. Anyone has built one and has the plan to share with me. http://www.audio-talk.co.uk/fiultra/KISS%20194%20T91HWAF3.jpg Many...

Anyone has built this amplifier?

Well, I had my Triplett 3444 calibrated by Chris Haedt before he passed, God rest his soul. I am now in need of a fresh calibration. Can you folks direct me to...

John L Stewart Jan 2016 In the Heathkit UA-1 12W Amplifier we see a 0.1 microF capacitor bypassing a one Meg resistor supplying the screen current. We...

I have a few things to say about AM radio, and generation of AM waves...

John Stewart Nov 2015 This circuit is based on an amplifier I built for a friend to be used with a guitar & mike. The date on the schematic is Dec 7, 1958,...

Hello! Which tube is equivalent to 1/2 12BH7? Thanks!

On Wednesday, October 28, 2015 at 12:37:11 AM UTC-6, John L Stewart wrote: > Pink Floyd > > >...

If anyone has any leads on where to get some original Scott 299B Output transformers I am interested in purchasing.

What measurable benefit might this copper band have? There is what looks like a connexion to go to ground. Audiophools bad dream or something new?? Anybody...

On Wednesday, October 28, 2015 at 2:37:11 AM UTC-4, John L Stewart wrote: > Pink Floyd > A few, those of us that still dabble anyway. The long, cold winter...