https://www.youtube.com/watch?v=nGmOiccZFJM

The question is simple: When it comes to schematics e.g. I see V1A and V1B How do I know which triode this refers to is V1A Pins 123 and V1B 678. Most data...

Western Electric is still making tubes, in the US. https://www.westernelectric.com/ Peter Wieck Melrose Park, PA

Peter Wieck suggested some videos, and I found others, that might he helpful to anyone who might want to make tubes. These two go over the needed equipment...

On 2020-05-04 15:43, Peter Wieck wrote: > This has probably been asked-and-answered before, but: > > I am looking for multi-section "empties" - that would be...

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...

I have a new power transformer, which says "for Eico Stereo". But that is all I know. It's just a hand written label, stuck on the bottom. The case has these...

Hello all I have one available looks to be in good shape please contact me by text if you have interest 626 4847992 Reed thanks

I have a DIY amp built to Marshall 2204 circuit specs that is about 15 years old now. I use it at my gigs. I want to experiment a bit. A couple ideas I have...

Hi folks, What is the reason the Fisher 30-A uses (very) different valued grid resistors for the power tubes? - R9 = 2K2 for V2 - R4 = 33K for...

I keep a Dynaco system in my office consisting of a PAS 3x, FM 3 and an ST 35, and includes a Sony 5-disk CD changer. As it happens the 35 is a first-issue...

Hello all, Just picked up a TV-7/U tester today. I've used these before many times, and I've owned a few testers over the years, but never a TV-7 until...

On 2019-07-17 08:08, Peter Wieck wrote: > https://www.ebay.com/p/Crescent-USA-Made-Old-Stock-4-1-2-Needle-Nose-Tip-Cutting-Wiring-Pliers/28027599507 > > Not a...

Does anyone here have any experience with using 171a in a linestage. Thinking of using constant current.

Thoughts?

http://www.dvhrc.com/pdfs/Oscillator%20Summer%202019.pdf I am on Page 7. That is a vintage Kutztown Klinic picture, but I will be in Bethlehem for this...

On Monday, September 28, 2015 at 7:03:30 PM UTC-4, Big Bad Bob wrote: > FYI - plug for this particular book. It discusses some rather > interesting design...

Ran across an amp that has a 5 mf cap connecting the cathodes in a PP output amplifier. Looking through RDH for info on this arrangement I can find...

As an aside, I toured the Veolia Steam Plant in Philadelphia, yesterday. This plant has been in continuous operation since it opened in 1909, and is quite a...

Now that Spring is about to Spring in 2.2 days, and given that other-than-cats subjects are fair game; Please look at the information below. Please note that...