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justin

Manufacturer/MoT
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Everything posted by justin

  1. heh. i would have set up a new account for the $2k order i placed last week
  2. WTF is OnTrac?
  3. you have to touch together 2 bare wires to make a change in volume
  4. you dealt with momo? good luck
  5. Have you measured the PSU voltage or are you just going by what the board says? Building it at +/-350V would result in less max voltage swing. Yes, the sum of the string of zener diodes controls the max output voltage. However, if the transformer secondaries are not high enough to support +/-400V you would end up with an unregulated power supply. Also, if you do change the diodes you'd want to make sure that the power supply capacitors installed are OK for the higher voltage (they would need to be at least 450VDC caps) What i meant was if you adjusted the bias supply so it measures 560V at the headphone jack, with your voltmeter that's either a 5M or 10M input, then you would have actually have set it around 1000V (which i dont think is possible) and I assume you could easily damage the headphones
  6. The Blue Hawaii article says +/-400V The board may be labeled +/-350V because that was the voltage for the KGSS, which is what the boards were used for before the Blue Hawaii was ever built -- if your Blue Hawaii has one of my boards in it. If you are actually measuring +/-350V from the boards, and this is a DIY amp, then the person must have built it that way for any of the following reasons - Because the board was labeled for a 50V zener diode and they didn't understand what they were doing - Power consumption/heat was too much at +/-400V The bias voltage will measure low because the 5 meg resistor in series with it forms a voltage divider with the input of your multimeter. You have to measure before the 5M resistor. Goodbye headphones...
  7. justin

    Cool Stuff

    that's a lot of money that can't be reclaimed once you buy it i'll have to stick with my everyday folk glued together woods
  8. i know who you are.
  9. Thicker cables, more bass, and the math that proves it
  10. Ken your taxes are almost as much as my mortgage payment any more pics?
  11. how much for just the garage?
  12. if anyone needs .1uF/1000V caps for electrostatic amp stuff..
  13. true, i contacted them and they only make it with wire leads now. oh well. that's really annoying to assemble in production. on the plus side, when the attenuator fails or they change the design again, it doesn't need to fit onto a specific PCB. it seems like its about the same size as the Alps RK50, maybe a little longer
  14. if the tax was 1% you might have just paid it Way to go CA
  15. i'm interested in the Khozmo attenuators, but the unknown is how those switches are going to hold up after years of use
  16. no, he said he only dates 17 boys
  17. sounds good but i don't think kicking back, trading non-essential services and consuming big screen TVs is a good long-term economic plan
  18. yen went from 80 per $ to 84 in the past few days
  19. worked for Grado. how much to make a pair of these out of SR-009s?
  20. i like how when an amp with a lot of power comes out everyone says "Good, more power sounds great" And when an amp that can only swing 1Vrms comes out they say "We dont really need much power, it's the quality that counts" So when you say... Just wait until something really weak comes out and see all those people change their mind. That's all this is.
  21. just happened to be my next check...
  22. is this because the BHSE is #17?
  23. how much will PCBs cost and can you send me a BOM for Mouser/Digikey?
  24. If you buy the Sennheisers, you'll have to re-register
  25. first ipod wasn't released until 10/23/01, and only interfaced with Macs. 2nd version had Windows compatibility but that wasn't until mid-2002.
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