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  1. ofajen

    HD580s are a hit!

    I now have my two headphone outputs on the M-Audio unit calibrated to the same reference level, one for the HD540s, the other for the HD580s for easy use and comparison. One other possible factor for the HD540s seeming slightly more detailed is that the foam liner inside long since disintegrated...
  2. ofajen

    HD580s are a hit!

    About the first thing I did here on Head-Fi was to locate a new pair of headphones. Probably not that rare. My old HD540s have a flaky connection in one capsule. I bought rocktboy's modded HD580s. I'm not sure if there is another place for this, but I can't post on his for sale thread yet, so I...
  3. ofajen

    Anyone calibrate their monitoring gain?

    Quote: Originally Posted by Skylab I guess I do. I use an SPL meter to keep my levels at 80db peak (A Weighted). But I use program material (stuff I know is "loud", i.e. recorded/mastered with very high levels), not sine waves or pink noise. That's enough to ensure you protect...
  4. ofajen

    Has anyone compared pro headphone amps to domestic amps?

    Quote: Originally Posted by RatFarm Just asking because of my experience with pro vs 'audiophile' power amps. I have owned in the past amps from Krell, Counterpoint, Aragon, Adcom, Classe to name most of them. As an experiment I purchased a Crown XTi2000 DSP professional amp (325w/ch...
  5. ofajen

    Thoughts on using Hafler power amp with HD580s?

    Quote: Originally Posted by amb Using an inline resistor to attenuate the voltage is not a good thing. That resistor forms a voltage divider with the headphone impedance, which for the HD580 is nominally 300 ohms. However, the headphone impedance is not linear with respect to frequency...
  6. ofajen

    First post in this forum and a question

    Quote: Originally Posted by majkel Instead of believing in what people say, simply trust your impressions. Mine say that sounds from headphones almost never go through my head. Uhhh.... it's not just "some guy saying something". F. Alton Everest (then ancient and now deceased)...
  7. ofajen

    Thoughts on using Hafler power amp with HD580s?

    Quote: Originally Posted by ofajen Based on 200mW load and 600 ohms, I could still be swinging 10V P-P, so I figure I'll start with attenuating the output voltage by a factor of 6. If I can find power resistors up around 3K ohms, that should do it. Probably buy some 1500 ohm resistors...
  8. ofajen

    Thoughts on using Hafler power amp with HD580s?

    Quote: Originally Posted by Sinwerm How much you figure it is gonna cost to "rig up a little box" to drop the output from the power amp ? If you have the parts and the know how and it sure seems you do I guess not much. The sensitivity of the 580s should be 97dB the max load should be...
  9. ofajen

    First post in this forum and a question

    I posted my first message over in the amp forum, since that's what I'm working on. In brief, I'm not a headphones first kind of guy. I mainly work on my own recordings of my own music and have a high resolution monitoring rig and monitoring space for that. Headphones are what keep me going...
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