Leaderboard

I took the challenge again to squeeze a DIY eStat amp into a small enclosure. This time is a KGST in a Breeze Audio 2409. I was using an Antek AS-1T350 with a separate low-profile quasi-toriod for the LV supply. The Antek was well shielded with both copper and steel bands under the wrapping, I still need to move it all the way back to reduce the hum. I'm glad I pulled the trigger and ordered the custom R-core transformer. I asked the vendor to build two identical bobbins to balance the flux, each with a 115V primary, a 350V, a 17V and a 6.3V secondaries. With the copper band on the outside, the flux leakage is so low that I couldn't pick up anything significant at 60Hz or 120Hz on the FFT. I have more than twenty 6S4 and 6S4As, many of which are NOS. However I had a hard time matching a second pair, and had to decide between a well matched pair that is slight noisy and one that's less well matched. The curves look all similar below 400V, but could go all over the place on the higher voltage region. The below picture is kind of an extreme case, an example that two tubes both testing good on a tube tester at 150V on the plate, may be quite different when you need them to swing up to 800V: <To be continued..>

You didn't try to quickly load one in the Volvo? Did somebody call me? I built a few shaker cabinet doors for a couple of storage nooks in the house I'm currently working on. These will match the new shaker doors throughout the house.

Olivia Newton-John is a minor deity in my book, a beautiful woman inside and out. All this even though I wasn't so much into her music.... RIP.....and fuck cancer....all types, but especially mbc.....

Finally received this.

Another 80's reader here. It was recommended by a colleague in the 80's - unsurprising given it's best seller status. I also enjoyed, and recall thinking at the time, "Wow, what a guy!". Now that I am older / wiser / more cynical, and having read / been exposed to other "magical CEO" autobiographies, I wonder if they don't suffer from self-selection / survivorship bias "I took this bold course of action, and it worked great, it must be down to me" Given the imperative that "something must be done" I can understand the bias to action, although now I might view the lack of control groups - A/B testing - &nbsp;Blue Green Deployments differently Maybe I'm not cut out to be a CEO, and just lack Vision, and am insufficiently Bold / Courageous. In the same way politicians that are agile / adaptable / change their opinions based on the latest evidence (evidenced based reasoning?) are seen as "flip-floppers" Maybe I just need access to the Three envelopes / letters. https://kevinkruse.com/the-ceo-and-the-three-envelopes/

I'm one of those 80s readers. Enjoyed too.

Brian Jackson JID008 Brian Jackson, Ali Shaheed Muhammad, Adrian Younge 2021 https://album.link/i/1561881049 Example: Good mix.... But now

Those top two are very wide. They go above a closet and will be on a track as bypass doors. The other two go above a linen closet and will be typical cabinet doors with euro hinges. They're off to the painters now.

I drove past this sight and had to turn around and take pics. Thickest and largest slabs I've ever seen in person. As I drove away, I saw the stump where this big boy came down.

Swapped back to the AT cartridge and did some listening this evening!

This is what the thread is about. Detroit Style Pizza! With a BIG pepperoni. 🤩

Iacocca: An Autobiography I saw this on a Car and Driver list of books for petrol heads. I ended up loving it. I don't necessarily agree with all of Lee's politics, but my goodness does he seem like an exceptionally smart guy and capable manager. There are some great business lessons I learned and he has no shortage of interesting war stories. He also grinds a lot of his personal axes and has some choice barbs for his enemies. Apparently this was the best selling non-fiction book for a few years in the mid 80s so I'm not the only one who has enjoyed it. Highly recommended. To steal a phrase from Lido, "if you can find a better auto book, read it!"

Whether it was triggered by your comment or the fact that Matthew wears sunglasses in every image I saw when looking him up, but I checked and he is blind. Interesting story that somewhat explains your initial thoughts on his music. https://www.cbsnews.com/news/matthew-whitaker-blind-jazz-pianist-18-years-old-60-minutes-2020-12-27/

Not this time, Mikey, I don't know anything about him and haven't seen or met him at SFJAZZ. 😆 I will check out the album.

Godspeed, Olivia. Thank you for my prepubescent crush... HS

This will be their 10 year anniversary!

Here’s a good podcast of Gaiman talking about his choices in the TV series. https://podcasts.apple.com/us/podcast/wtf-with-marc-maron-podcast/id329875043?i=1000574611646

Never was a huge fan, but she affected so many people so positively and brought so much joy to the world, I still feel the world just got a little bit darker.

That thicc!

Saw Grease when I was 10 and Sandy Olsson gave me some completely new feelings. Olivia seemed like a terrific person in real life too. RIP.

RIP Olivia. Sorry Oz, you're having a tough week.

R.I.P The luminous Olivia Newton-John https://www.bbc.com/news/entertainment-arts-62472100 and a live tributes timeline ? https://www.bbc.com/news/live/entertainment-arts-62470505 https://www.hollywoodreporter.com/news/music-news/olivia-newton-john-dead-grease-1235194880/ https://www.nytimes.com/2022/08/08/arts/olivia-newton-john-dead.html https://www.billboard.com/music/music-news/olivia-newton-john-dead-obituary-1235123935/ https://www.hollywoodreporter.com/news/music-news/olivia-newton-john-dead-grease-1235194880/ R.I.P Olivia

Thanks again TY algorithms

@swt61

That is why it is half the number of orderings for ones not mounted on a heatsink - 3, as I said above. That assumes you are not twisting the leads out of a straight line.

For a transistor mounted on a heatsink there 6 possible lead orderings, 3!. For a small signal transistor that you can insert either way round, that reduces to 3 effective orderings. 3!/2. I'll get my coat...

how is the voltage O- to ground does it behave and vary similarly to the O+? are both channels approximately the same? Unless there is a servo to automatically adjust the offset then you will see some variation with time as the device heats up and reaches a stable temperature. My T2 takes more than 3 hours for the offsets to become mostly stable. Even with a servo there is a tendency for some low frequency oscillation since the servo will alter the current flow and the change in current current flow causes a change in the temperature of the components and temperature change effects the gain and therefore makes the correction over or undershoot - a servo is always chasing its own tail.... Plus unless your valves have regulated heaters, mains voltage varies with time and the variations in the ac heater voltages will affect the valve temperatures and therefore offsets too. You need to put the offset into context. The stax headphones are built to withstand 100s of volts of input. The music signal is going to be far far higher than this offset. For example the T2 is capable of more than 600V RMS output into pro bias headphones... even at very moderate listening levels of say 50Vrms output, 0.1V offset is a tiny fraction of the signal... It's also normal for the offsets to be fairly high (10s of volts) on initial switch on, fairly rapidly decreasing while the valves initially warm up, especially if you do not have a delayed high voltage switch on circuit.