Jump to content

Leaderboard

Popular Content

Showing content with the highest reputation on 03/25/2016 in Posts

  1. I didn't manage to slow down fast enough to take pictures of the plate with red chard and couscous but this is the broiled pork tenderloin I made tonight
    8 points
  2. Egg baked in an avocado with chives and salsa. Sent from my iPhone using Tapatalk
    4 points
  3. Pretty sweet. The dealer put in the wrong remote start in it (key fob installed, but cell phone based ordered) so that will need to be fixed but otherwise seems great. Also noticed that there was a scratch on the one of the passenger windows of my Focus ST and they have agreed to replace it. Expensive for them but the car should be pristine when new.
    3 points
  4. The event is going pretty good size with many vendors (well we are still working on it). I can certainly bring along the KGSSHV Carbon + SR009 for the gang to check out.
    2 points
  5. I think state farm is counting on you just accepting it. Tell them geico is offering it for $542
    2 points
  6. I wonder if Al would like to spend a year in Karyl's doghouse?
    2 points
  7. Not restaurant quality plating but yummy. Thai basil seafood
    2 points
  8. Look on the bright side: you'll have plenty of time to listen to the beautiful, beautiful music. Just set up a little rig in the dog house, get a comfy chair. Boom, done. **BRENT**
    1 point
  9. I wonder if Karyl would like to spend our 40th anniversary (that weekend) visiting with HCers and oogling Canlanta?
    1 point
  10. Dagnabit, why'd I miss this show. Also, she's being really cute in this short video: One more:
    1 point
  11. 1 point
  12. RIP Garry - one of my all time favs - I went to a taping of his "It's Garry Shandling's Show" back in the day I liked it so much. I will miss him. http://comediansincarsgettingcoffee.com/garry-shandling-its-great-that-garry-shandling-is-still-alive
    1 point
  13. I have to try that! That sounds so good!
    1 point
  14. Oh man that's sad the world needs laughter, RIP Garry.
    1 point
  15. Alright, your turn to post the recipe. Nice.
    1 point
  16. 1 point
  17. I didn't spray the entire board, but I used a conformal pen to specifically insulate the high voltage pads that face upwards (ie though the ventilation holes in the top plate. I've used conformal spray on boards that will or might be working in a damp environment - like wet level damp. It is common on mil spec stuff for that reason.
    1 point
  18. Will be great to see you guys here again! I can't wait really.
    1 point
  19. A couple things. Put simply, a choke is an inductor and an electrostatic headphone looks kind of like a capacitor. Look in any electronics textbook and you will see that when you connect an inductor with a capacitor you get a resonant circuit, which means you can have a peak in the frequency response at the resonance frequency. I said the headphone looks “kind of” like a capacitor. It doesn’t exactly resemble a capacitor because it makes sound, which means it uses power. The power spectrum of music is highest in the mid-bass to lower mid-range areas (approximately 50-300 Hz). The impedance of a choke rises with frequency, which means that it requires more current to drive it at low frequencies, exactly where the headphone is requiring the most current and voltage to make music. This increases the distortion of the output device. The largest commercial plate choke I have found runs around 200H. This has an impedance around 25 kilohms at 20 Hz, rising linearly with frequency from there so at 40 Hz its impedance is 50 kHz, which is a typical resistance for a stat amp plate resistor. So at the lowest bass frequencies it requires/diverts more current from the headphone than a typical plate resistor. This is all based on an ideal choke, ignoring the possible resonances and other imperfections of a real world device. With a resistor load, you don't have the possibility of a peak in the frequency response but the resistor requires curent to drive it through the whole frequency spectrum. In fact, with a resistor load, the amplifier actually wastes more current (and power) driving the resistor than driving the headphone. By comparison a really good current source load demands a negligible amount of current, which means all the standing current of the output device is available to drive the headphones, which is what you want. As I said elsewhere, it converts an amp for driving output resistors to an amp for driving headphones. It is simply a better technology. This is why Stax has used current source loads in its solid state amps in place of resistor loads since the 1970s.
    1 point
  20. Two of these for dinner with some of my best friends from law school.
    1 point
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.