Leaderboard

R43,44 are the feedback resistors and R7,8 are the lower tube cathode resistors. LTspice simulation indicates that they all determine the gain of the amplifier. 100K and 100R, as in the original schematics, gives a gain of roughly 1000. With 270K and 2K resistors LTspice indicates a gain of 140. The resistor changes you have done will not change DC voltages at the small tube pins. Maybe your trouble is somewhere else than at the feedback and cathode resistors. But don’t give. It seems you are more than competent to build a mini T2 and, even more important, to fix it if it’s broken. I guess you will have a fully working mini T2 sooner than you now think.

Yesterday I took a Wednesday bellyful Pretty entertaining, I was expecting worse.

I like my beans fresh and my wine old...it keeps the math simple.

After listening/watching this ^^ I needed some more Paula Cole, so: American Quilt Paula Cole 2021 https://album.link/i/1558502979 Example: I wasn't sure about this to begin with. There are a bunch of styles on this album, that I was not sure would match Paula's voice. I was happily proven wrong track after track. The Example, plus the 'audiophile system setup quality'™️ of Bye Bye Blackbird will have me coming back to this album for more. Thanks Paula.

It was fun. Not as fun as expected, and I figured out who the killer was pretty early on.

Nice interview with Jenna Ortega....she talks about some music from the 70's/80's, many of which were mainstays in my musical playlists....

We watched this a while back, thinking it would be more tongue-in-cheek based on the title (it wasn't).... But enjoyed it a fair bit!

i'm glad you are making progress. As originally designed the mini t2 should be able to output about 500Vrms with around 0.02% distortion with about a 0.5Vrms input. At 100Vrms output distortion should be about 0.004%.I think this is what you should be aiming for. I would also strongly advise that you build the golden reference HV power supply for the amp. Its an extremely high performance power supply and is the core of most of the headphones amps designs here. Its also all through hole and easy to build. It will also provide the 580VDC bias needed for the stax headphones.

I hope this male cunt gets massively abused - physically and sexually - in that prison.... Not that I am a hater or anything.

I shamelessly pay for high quality, freshly roasted beans. I'm not proud of it... HS

It arrived. I ended up just sitting outside for 3 hours. Anyway, I love it. The internet has different thicknesses listed. I get 7.85 mm. It’s just thick enough to have some presence. Not much thicker than the hand wound Reverso ultra thin case, though a noticeable bit thicker than the Drive extra flat. The strap is the nicest alligator strap I’ve handled.

The doc Westwood: Punk, Icon, Activist is a great watch, free on Tubi, YT, etc. and available to rent elsewhere.

The funny looking cat is equal parts angel and hell beast. And I have the flu. But on the other hand a new Rega Elex integrated amp arrived minutes ago as well as a new headphone cable.

Just popping in to say hi. how you folks doing?

Phew... couple of days already finishing up the final wiring, setup and calibration of my CNC router. Ended up with a 2.2kW 400Hz water cooled spindle on a 4 axis machine that is connected to a Mach3 system with two LPT cards fully automating spindle start/stop, water pump start/stop for cooling, air cooling for the cutter, etc. Very happy for now how everything goes together. Need to fabricate a heavy duty cabinet for it holding all the electrical stuff and computer below the machine with some drawers as well for the cutting tools, fixtures, vacuum pump and water tank as well. Going to keep me busy for some time.

So I bought a lot of modified headphones on ebay, SR-Lambda Signature, SR-007Mk2 and SR-009. They looked to be in rough condition so I thought, worst case I'll tinker with them and have some more spare parts for my stock. Now... the first two units were bad... really bad but I fully rebuilt them from my stock of spare parts. Now I've been fixing up lost cause headphones for 20 years but still, these were the worst I've ever seen. Missing parts everywhere and utterly retarded ways of "improving" them by making everything worse. Now, I had left the 009's in their box until this morning and wow... just wow... So what are we looking at, these are the outside protection grills... taped to the outside of the housing with some rubber/butyl type tape. The earpads are fixed in place with it as well and it covers up the cable entry on both earcups. Now... this is after repairing two utter clusterfucks of incompetence and stupidity but yeah, not prepared for this one. Pull off the earpads and the tape around the cable entry and this is what greeted me. Just look at that soldering, the holes in the dust covers and well... the driver in backwards. These are dipoles like all Stax... it won't change anything to put it in backwards. There was nothing holding the earpads in except more of that glue and notice one missing screw on the driver. It gets worse though... Here is the driver removed and there is no dust cover at all. Yeah...nothing at all. Here is the other channel with just the tape over the cable entry removed. How this is supposed to improve performance is completely beyond me... Here is the housing with the driver removed and just look at all that adhesive residue. That ties into this, the earpads: Now they are utter trash at this point but look at the adhesive residue on them, that is hot glue! The most useless of adhesive which should only be used by kids in arts and bloody crafts! So end results is these headphones are completely fucked. The arc and housings can be used and the cable might be ok but the drivers are probably beyond hope. Add to this all the missing hardware and I'm not sure what I'll do with them. I might try to find a dead set of 009's with driver failure and make one good set out of the two or something creative. Final lesson, if somebody says they are modifying headphones and improving performance... odds are it is something like this.

https://wwd.com/eye/people/war-fashion-photographer-tony-vaccaro-dies-at-1235458580/ https://medium.com/vantage/the-life-of-tony-vaccaro-a-lens-into-modern-history-4d0e422b73eb

Photographer Tony Vaccaro passed on his 100th birthday. The range of his photos, from war-time ugliness to his beautiful fashion images, is incredible & always thought provoking.

RIP Barbara Walters.

R.I.P. Vivienne Westwood BBC News - Vivienne Westwood: Pioneering fashion designer dies aged 81 https://www.bbc.co.uk/news/uk-64122181 https://www.theguardian.com/lifeandstyle/gallery/2013/nov/30/vivienne-westwood-sexpistols

you won't believe it, many missiles from russia were shot down over my city in the morning, and I was sitting there trying to figure out why the board wasn't working properly. it was more interesting to me....

I'm doing OK but I'm ready for 2022 to end. I spent the day doing some woodworking with Steve and couldn't bring myself to clear the drains in the back yard before the next big rain we're supposed to get. Did you spend most of your day getting your fingers shredded by a furry land piranha?