sabzingeur
New Head-Fier
- Joined
- Jan 10, 2012
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Quote:
The HD598 has a more or less neutral frequency response, with less bass and treble, and more mids than the DT990.
In that case, which headphones do you suggest?
The HD598 has a more or less neutral frequency response, with less bass and treble, and more mids than the DT990.
Ignore the "headphone impedance range" spec, it is only marketing, just like the frequency response specified by the manufacturer for headphones. The fact that the output voltage of the Audio 4 DJ halves with a 100Ω load suggests that it has 100Ω output impedance, which is not great for the AH-D2000. You want the output impedance to be clearly lower (preferably by a factor of 8 or more if possible, but at least 2-3) than that of the headphone. It would output about 15.4 mW to the Denon, and about 11.7 mW to the DT990, which is not too much but maybe enough (you will have to use high volume settings with the DT990) if you do not need particularly high volume or dynamic range.
For the E9, the 2 Vrms is not relevant, it is a line output level. The headphone output is actually about 7 Vrms max. through 10Ω output impedance if you use the 1/4" jack, or 43Ω output impedance if you use the 1/8" jack. Therefore, the E9 is a much more powerful source. In case you intend to upgrade the Audio 4 DJ to a Xonar Essence ST or STX, note that these have a built-in headphone amplifier that matches the maximum power and output impedance of the E9.
Just so you know you want the impedance to be the same in the driver/amp and the headphone, that is when you will get peak power out
In that case, which headphones do you suggest?
Recently bought from e-bay a pair of fake ath-m50 headphones and it was a terrible experience since i had to go with buyer protection way..
Now i am about to make another attempt from this seller http://www.ebay.co.uk/itm/Audio-Technica-ATH-M50-Professional-Studio-Monitor-Headphones-Black-New-/330679023943?pt=UK_AudioVisualElectronics_HomeAudioHiFi_Headphones&hash=item4cfe017947 , has anyone bought from him? Does he selling fakes also? I saw he is a top-rated-seller and also i checked his feedbacks and none was complaining about fakes, but i got to be sure before proceeding so if someone know something please let me know.
I am not sure you understood what I wrote, the output impedance of the source being as low as possible relative that of the load is an advantage not for the purpose of getting the maximum possible power, but to improve electrical damping, and ultimately sound quality. If the ratio of the load/source impedance is not high enough, it will change the frequency response, add resonance (typically in the bass range with full size dynamic headphones), and increase distortion, all of this due to less control over the drivers.
If you have a source with 0.5Ω output impedance, you definitely do not want a 0.5Ω headphone, and because of the limited current it would not even give the maximum power output anyway.
Not sure where you are from but can you order the real thing (click yellow tab for additional discount) from a real retailer like this:
http://www.soundprofessionals.com/cgi-bin/gold/item/ATH-M50s
http://www.soundprofessionals.com/cgi-bin/gold/item/ATH-M50
I understood entirely what you wrote, and the way that electronics work is by balancing
from your example if you have a source with an output impedance of 0.5Ω you would most assuredly want headphones with an impedance of 0.5Ω or as close to that as possible, that is where you get the most power transfer
That is only true if the source can output enough current into the combined load of only 1Ω at the maximum voltage, which is quite possibly not the case. Good amplifiers are designed to have as low output impedance as possible, but can only supply limited current. For example, a speaker amp for 8Ω speakers may have an output impedance of less than 0.1Ω, but limited to a few A of current, which would make the theoretical "optimal" load of 0.1Ω (which is almost a short circuit) useless. A low output impedance also maximizes power efficiency, since a greater percentage of the power drawn from the supply is actually delivered to the load, rather than dissipated as heat.
But assume we are stuck with a source with very high output impedance (say, 100Ω) that is never current limited. While it is true that it will output the maximum possible power to a 100Ω load, the resulting damping factor of 1 is poor, and is sufficiently low to audibly change the sound. With a 300Ω load, the power output will decrease to 75% (that is only about 1.25 dB quieter) of the theoretical maximum, but the change from a damping factor of 1 to 3 is enough to be audible with many headphones, so in practice the improved sound quality is worth the minor reduction in power, unless loudness is everything you want. The 300Ω load will also deliver the 75% power while only drawing 50% compared to the 100Ω one from the supply.
First off if you have a 0.5Ω source and a 0.5Ω headphone the total resistance will not be 1Ω it will be .25Ω
Originally Posted by GreenGiant /img/forum/go_quote.gif
"Higher electrical damping of the loudspeaker is not necessarily better. Some loudspeakers sound better with lower electrical damping. A lower damping factor helps to greatly enhance the bass response of the loudspeaker, which is useful if only a single amplifier is used for the entire audio range."
Not sure where you are from but can you order the real thing (click yellow tab for additional discount) from a real retailer like this:
http://www.soundprofessionals.com/cgi-bin/gold/item/ATH-M50s
http://www.soundprofessionals.com/cgi-bin/gold/item/ATH-M50
New here.
Looking for a new pair of headphones.
Budget-$500 for amp and pair of headphones, if an amp is absolutely needed.
They will be used for minor gaming, mostly for music. The thing is that I listen to almost everything. From Dave Matthews to In Flames, Tech N9ne to KoL, Tupac to Ben Harper.
Basically looking for a good all around headphone.
Any other suggestions? I was thinking a set of HD 600 and a Maverick Audio A1.