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justin

Manufacturer/MoT
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Everything posted by justin

  1. FAIL unless you've already received a prototype from SumR and tested it with the PSU and Dynafet amp
  2. Maybe he was being nagged and turned away
  3. n/m, i think the brown caps are for outputs
  4. Resistor Types--Does It Matter?
  5. I also had Wake making a run. I had too many #1s and #2s going all the way, and a #4 sounded good. just picked the wrong one.. Also forgot to take the longer 3 point distance into account. It could cut down on the number of upsets
  6. You should get a resistor rated for at least 3-5x the amount of power used. Physically larger resistors can also be lower noise
  7. I'm not doing fantastic so far, but good news is we're almost done with Round 1 and I can still get up to 15 of the Sweet 16 teams
  8. It's not, although you could argue that a transformer should be used, or a discrete amplifier. If they're advertising it as a completely discrete amplifier, then it is a little misleading. BTW I have no idea how its been marketed
  9. The vast majority of sources that have both balanced and RCA outputs use an op-amp for balanced to SE conversion, and this is how you get your RCA outputs. What this means is most likely the RCA inputs to the Luxman will be superior, unless you have a really poor quality source with balanced outputs, or are running very long cables. What would be epic fail would be to take a phono stage that has an op-amp at the output for single ended to balanced conversion, and then connect that to the Luxman's balanced input with an op-amp to convert to single ended. But who would do such a thing
  10. justin

    Feline hum

    I would get a de-humidifier and rub your cat with a fleece blanket
  11. 1149 shipped
  12. Pico is equal or slightly better than AE-2 except in battery life and RCA connectors
  13. wat? the standard BH is 10W bias per tube 10W CCS x4 = 40W 10W EL34 plate x4 = 40W 1.6A x 6.3V x 4 = 40W voltage regulation = +15% transformer efficiency = +15% total = 166W then add in the -300V regulators, a couple watts for the +/-15V, and its easily 175W
  14. don't forget the filaments, power supply regulation, and transformer inefficiency
  15. Really not sure that this applies to many amps OTL tube amps with capacitor output (Singlepowers, RSA, many others): All of these if they are built properly have a resistor load on the output to prevent the output capacitor from discharging into the headphones transformer coupled amps: Not sure, do they require a load on the secondary? In the case of headphone amps, many of these may be 8-16 ohm outputs and already have a resistor load internally. OTL tube amps, DC coupled: This is like the Blue Hawaii. A Stax headphone is a capacitor load anyway. I would think the feedback loop would count as a resistive load on the output of the amp.
  16. The amp input would be shorted if the volume is at 0
  17. Here are a few more pics of the first BHSE burning in:
  18. When I asked everyone what color they wanted, that wasn't supposed to be something that could be changed later. Changing the color now would likely mean someone else wouldn't be able to receive what they asked for. Small modifications may be possible Here is the first one trying out the packaging: Goodbye bubblewrap, you sucked
  19. justin

    slow forum

    Laser Marking and Laser Engraving Services Available at Northeast Laser & Electropolish "When you see it, you'll shit bricks"
  20. There should be more explanation here. I've never seen a tube amp (for headphones) that is AUTO BIAS. Auto Bias means there is circuitry inside the amp constantly adjusting the bias so you don't have to. Fixed Bias is what is in most headphone amps, meaning you can't adjust it, and it may not be ideal for the tubes you've put in. as Nate said, there are trim pots accessible from the top panel to adjust the amp.
  21. i've never looked inside one of these but it might be cheaper for them to include that many connectors, even ones unlikely to be used more than once or twice such as the S-Video. each column of connectors could be attached to one of many identical PCB cards
  22. No, the GS-X does not convert SE to balanced
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