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Showing content with the highest reputation on 10/27/19 in all areas

  1. Are these the same one hit wonder Korgis from the 80's who released the "Everybody's got to learn sometime"? I'm listening to a recent bootleg recording of the Brad Mehldau Trio Hyogo Performing Arts Center Kobelco Grand Hall Nishinomiya, Hyogo pref., Japan May 30, 2019 No front cover art to show, sorry.
  2. More power outage prepping
  3. Spookily portentous. Home made rat-loaf. Yummy! 1938 Phantom Corsair - 6 seat, 2 door sedan concept car.
  4. I published a modification for the Stax SRM-T1/T1S/006 in AudioXpress July 2017, which is just out. The modification adds 5.1 kilohm output safety resistors and cascoded constant current output loads, which with their heatsink fits the space vacated by the plate resistors - see photo. Spritzer did something similar a few years ago with an SRM-007, adding constant current loads, but he also changed to 6S4A outputs. Unlike plate resistors, constant current loads burn up practically no signal current, so while the stock amp burns up 9.2 mA signal current in the plate and feedback resistors at its specified 300 VRMS maximum output, the modified amplifier only uses 2.8 mA driving the feedback resistors, leaving much more current available to drive the headphones. Since the output tubes are much less stressed, distortion is decreased and 2 dB of extra headroom gained. The modified amp circuit is very similar to a KGST or KGDT. This is no accident, as the KGST was designed to be “a Stax SRM-007t with no cost or retail considerations,” and the 007t is a higher power T1. The modification lacks the KGST’s regulated power supply, but larger power supply caps have been fitted. Since the amplifier is fully differential pure class A with current sources or loads at every stage, the current draw is pretty constant, minimizing power supply effects. The modified T1 can drive demanding headphones like the SR-007 Mk I, something that the stock design strains to do. The relatively flabby bass, somewhat dark tonality and soft treble are largely eliminated. Replacing all the old electrolytic power supply caps should also be done as routine maintenance. Parts cost for the modification is about $35, so total parts cost is around $100. With T1 amplifiers going for $400-$700, this is the best bang for the buck, a good starter project for someone wanting to get into electrostatic amp DIY without going to a full build.
  5. The man who taught me guitar; well, in spirit as it were; And the man who reminded me that heritage isn't necessarily a bad thing. The more North you go, the more must you smile and use body language ^^
  6. Any good Компромат, comrade?
  7. 1 point
    I think it's a very strange looking watch, myself. I think it may just be the relatively wide bracelet. The details are all as you would expect from an ALS, but I'm not sure why I would buy this over, say, a train, which I could also afford.
  8. Ooh... A laser So nice! Can’t wait to see some pics. I was thinking something different for the brush. Let me see what you’ve come up with before you bother sending anything. I can probably just get it locally if it’s what I think. Thanks though.
  9. Django Reinhardt "20 Chansons D´or"
  10. 1 point
    Done and some nostalgia as it's been a decade since this was going on...
  11. My preamp. I'm still working on it.
  12. Copying KG and Birgir's posts from the Stax Huddler thread
  13. It might also be helpful to have Kevin's voltage and current measurements in this thread as well. Reposted from the other site: Voltage More added later Current

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