Quote: Originally Posted by ofajen 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. I didn't really like this setup too well, since I ended up listening to...

Quote: Originally Posted by CareyB I like my 580s too. Rocktboy has a feedback thread here so you can post your positive experience there. Thanks! Now I know where to handle those posts. Cheers, Otto

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...

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...

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...

Quote: Originally Posted by ofajen The other needed step is to actually calibrate the HP levels to the same SPL reference level. I've tried an SPL meter inside the headphones to do the same sort of calibration, but I think I get more accurate results by simply using the sensitivity...

I didn't see a thread on this, so here goes... The broad questions are: 1) do you try to consistently set HP monitoring levels? 2) do you try to qualitatively or quantitatively adjust for the "loudness" (degree of compression) of the program material? and finally 3) do you set...

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...

Quote: Originally Posted by MaloS Why did you not get something like akg k240m or equation rp21? They are headphones designed for studio use, and will do a much better job at that >.< Much of the time I prefer to use open headphones, not closed, because they sound so much better...

Quote: Originally Posted by Skylab I own a Sound Devices headphone amp, which is a pro amp. It is built in a chassis that could be run over by a semi and suffer no damage. It will drive 3 headphones to ear-splitting levels, and sounds good. It does not have the refinement of my more...

Quote: Originally Posted by Gradofan2 Get some K1000's... AKG says they need a minimum of 30 watts per channel into 8 ohms out of a speaker amplifier to perform well. Otherwise... it's probably best to scrap the Halfer and get a good head amp. Someday I may get K1000s but...

Quote: Originally Posted by Sinwerm I think it would be better just to get his 540s refitted and fixed. Seems the easy solution. Thanks. I thought of that, but it's not so easy. Sennheiser USA can't get replacements. Headphonesdirect is a site they referred me to in the UK, but...

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...

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)...

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...

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...

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...

Hi, folks. This is my first post. This place is a handy source of way more info than I'll probably ever need on headphones. Very cool! I'll post a bit of my history here to get started and more later in the headphones forum, but right now I'm thinking about amps. I've mainly been using a pair...