Everything posted by Craig Sawyers
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And now what did you do TODAY?
Well, that was fascinating. There were people there who had indeterminate but massive wealth. Founders of hedge funds, international road and infrastructure construction, bankers and so forth. The Countess Wessex was both charming (she was in PR before she married Edward) and disarming. I had the whole "Your Royal Highness" thing worked out in my head, but she totally threw me by coming into an entrance behind me, and I was the first person she saw in a full room - put her hand out for a handshake and said "Hello - delighted you could come". You could almost hear me brain rattling around wondering what had just happened; I think I babbled something. Carole said "Yes - that is absolutely typical of her. She is completely not up herself, unlike Prince Charles who gets really upset if you don't follow protocol" The house was built in the 1880's for Queen Victoria's youngest son, who died in the 1940's, after which the house spend long periods unoccupied, and of course progressively degraded. Took several million to restore. We had dinner in The India Room, which is lined with carved paneling in the Indian style. Actually everyone was really good company. Had a chat with Susan Hampshire, who has aged really well (no facial work), and still has the glorious honey-like voice from TV and film. Impossible to think she's now 80. It was only afterwards that it was found that five of the ultra-wealthy had chipped in £25k each, and two substantially more. Sort of as loose change. One guy, a self made man from Mauritius, has pledged to become a philanthropic fund raiser for Brendoncare. Quite an evening!
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And now what did you do TODAY?
Looking at the guest list, the only one I recognise is Susan Hampshire, the three time Emmy award winning actor. Her husband has dementia, hence her interest in Brendoncare.
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And now what did you do TODAY?
This is actually for tomorrow. My wife runs https://www.brendoncare.org.uk/ as CEO. Their patron is HRH The Countess Wessex, wife of Prince Edward, youngest son of the Queen. So tomorrow we're off to Bagshot Park (their home) https://en.wikipedia.org/wiki/Bagshot_Park as a fundraiser for my better half's latest project https://www.brendoncare.org.uk/care/our-care-homes/otterbourne-hill . Dinner for 42, with five great and good expected to fork out UKP150k. The ones that could not make it, chipped in UKP10k. Should be interesting! I'll let y'all know what it is like.
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Technical Assistance/Advice Thread
Although it is a massive pain in the ass, particularly with large boards, I stuff one part at a time. And then use a highlighter to cross it off on the BOM and component layout. It just saves so much grief trying to find the stuffing error, or lead you've not soldered. Even so I've stuffed PNP's instead of NPN's recently (pulled them out the wrong tube). Took an embarrassing length of time to find that error. Fortunately low power, so nothing fried - it just failed totally to work.
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Happy Birthday Aimless1!
Happy birthday - and get well soon!
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The Headcase Stax thread
Currently 10% of global power generation is consumed by server farms, cloud computing, crypto-currency, data centres and so forth. Google and Amazon alone count for a good chunk of that. To control that nonsense new installations are located either in cool climates (Like Iceland!), near the sea (to limit air conditioned cooling), and current plans are to site under the sea (security and having lots of cooling *right there*).
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Fuck in snow
Weird shit in Ca - either forest fires or freeze. Keep calm and carry on Here in wet old UK every footpath is a sea of mud.
- Guitar-Case
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RIP someone or another
That is really sad, Todd. How awful. RIP Carol.
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Happy birthday, Steve (swt61)!!!
Happy birthday Steve! Have a truly great day.
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Technical Assistance/Advice Thread
Iron the Terrible - wasn't he a medieval Tsar
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The Knuckledragger 3rd Memorial Slow Forum Post
That is one of the most disturbing things I have seen
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Happy Birthday Thrice!
Happy birthday!
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The analog thread.
Oh - OK. Geddit. I was thinking about how you could possibly know that I know Paul Messenger and Martin Colloms, or that I was CTO of Wharfedale in the early 90's. I clearly overthought your comment
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The analog thread.
Huh?
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Happy birthday VPI!
And another belated Happy Birthday! Hope you had a great one.
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What Are You Building Today
The solder tab on the body connects through to the cable connector shell. Unless the body of the connector is connected to chassis that gains you nothing. You need to connect pin 1 to chassis as directly as possible. Reducing the loop area is the aim of the game. To do individual grounds at each XLR you have to clean the paint or anodizing off around the fixing screws so the solder tabs at that point are shorted to chassis metal. I do that with a Dremel before I start installing hardware, so it is easy from there. It also ensures that the shell of the XLR (and hence the shell of the cable connector) is tightly grounded too.
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The Knuckledragger 3rd Memorial Slow Forum Post
Is that a Moog modular?
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What Are You Building Today
It is just that it can give rise to difficult to understand problems. Like a phone doing a cell search on maximum power, and suddenly zzt zzt zzt. The best papers I'f found on this are the Rane Notes http://www.rane.com/note151.html and http://www.rane.com/note110.html and http://www.rane.com/note166.html The nub of it is: connect each pin 1 to chassis ground as directly as possible in heavy gauge single strand wire - the goal being zero length. Even a very short direct connection inside the box is not ideal. Many professional amplifiers use a two terminal tagboard on the rear panel for + and - signal, and a screw terminal to the case. So pin 1 is grounded outside the case and shield current never penetrates the case. Pain in the ass for domestic gear where you want to disconnect it easily, but OK for permanently installed studio gear.
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The Knuckledragger 3rd Memorial Slow Forum Post
Who's at the wheel - Elon Musk
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What Are You Building Today
Looks really good! Minor point on the XLR wiring. You've got pins 1 chained together and then via a wire to chassis. And yes - pin 1 absolutely has to go to chassis, but by the shortest possible route - a separate thick wire from each pin 1 to a ground solder tag at the nearest XLR screw. With the arrangement you have, any RF intercepted by the balanced cable screens goes into a tuned radiative loop (from the dimensions, several hundred MHz) and spray it inside the chassis. And conversely any radiative interference from those class D power amps gets coupled onto the XLR cable screens.
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RIP someone or another
Jeeze what a dreadful story. What an unholy mess up and such a sad and distressing end. RIP Jake.
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Amplifier porn
Yup. My amps have Neutrik 32A Powercons on the back, then 32A cable to 30A NEMA connectors on a distribution block. Got to keep that mains impedance low
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The Knuckledragger 3rd Memorial Slow Forum Post
Did Jacobson die from liver damage? Did he die from alcohol induced dementia? No. He continued working as a freelance journalist and writer after an illustrious and prize winning career in war journalism, pretty much until he died age 79 - from meningitis. But wow - did he live a classic Fleet Street life!
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Linkwitz Labs LX Mini
Absolutely - I have a pair of LX521, which I am about to upgrade to LX521.4 . His speaker designs are absolutely awesome. They simply disappear acoustically. The LX-mini is much more forgiving of room layout, since it is a monopole and not a dipole. Someone I know has the LX-mini, and came across and we did a shoot out between them and the LX521. The only significant difference was the relative lack of bass on the -mini, which is overcome when paired with the subs. They also sounded more "forward" as compared with the LX521. But still pulled off the disappearing trick. And they are a whole lot cheaper to build than the LX521 by a very long margin. Nelson Pass has done a discrete FET analog crossover for the -mini (see SL's site), circuit boards for this are apparently going to be made available on diyAudio. SL is apparently very happy to let people come over and listen - and since you are local, why not get in touch with him? LX521's in my listening room