D2000, DX1000, Edition 9: A Comparison - Page 6

Now this discussion suggests some interesting information. People are saying the UE9 has a bass boom compared with some others, say those that have a distinct impedance peak in the mid-bass region. Amplifiers that are designed to handle those headphones may be boomy with a headphone like the UE9 that are very flat until it goes below 40 hz. When the headphone has a peak impedance we should expect an increase in sound pressure in that area over the other frequencies. So take the HD650 and its complimentary amplifier. The HD650 and GS1K both have peaks in their impedance curves in the mid bass areas. Now match their amps with the UE9 and the hardwire equalization built into those amps should result in much more bass bloom than those with the impedance peaks.

This would be a technical response to why some may hear a boominess with the UE9. Use an amp without the built in equalization and you may find a different result. This is not to say that the amp is not flat under standard test conditions but with a dynamic load where the load has large impedance swings that amp if flat then will not be with a load that has a fairly flat impedance curve.

This speaks to synergy. In my gallery if you can get to it are several curves showing various headphone impedance curves.

Not sure I understand this ( I am no EE so I would welcome explanations, especially where I am wrong!). Measurements performed (and posted by companies like headroom) are pressure / voltage responses right? Then, I would have assumed that the impedance load affects the current draw from the amp but if it is properly designed, it won't prevent it from driving the headphone (supplying the right voltage swing). Maybe the actual control of the diaphragm is affected by the actual amp design but would that be visible in a frequency-response measurement?

I am just surprised to hear than any proper headphone amp drastically changes the fr. response of a headphone (i.e. output pressure / input voltage) depending the frequency dependent headphone impedance!

IMO boominess is one thing and emphasis is another completely different, if you like the bass presentation of the 750 better because it is less pronounced, that is one thing, that we completelly understand, others like completelly lean cans, that is not an issue. But to state that the 750 bass is better than the ED9 is another thing completelly different, the ED9 goes deeper, and with more definition, than the 750, and of course it has a lot more "presence", and that is probably what you do not like too much...

I hope there is no such thing as an Ed9 Posse... I am personally a "fan" of this headphone sound signature but the above implies something very negative! Like for example that Ed9 defenders are not objective, and so on...

Anyway, I think I was in the same boat as you: I did confuse bass quantity with boominess. Turns out that boominess truly is part of the recording not the headphone itself. Solution for me: just pay attention to the positioning of the ear relative to the earpiece. In my case (and for other people too: http://www.head-fi.org/forums/showthread.php?t=253503 ), it makes a huge difference in terms of bass loudness.

This headphone is just too good to get obsessed by the bass emphasis. I feel like (and it's a natural behavior for most people I guess) people are trying really hard to find a fault with these headphones because it's irritating when a headphone is unanimously praised (especially if you own something else or have a different opinion!). IMO, it's exceeding all the other cans I heard in quite a few areas. We get into the balance (bass vs. the rest) cause indeed these cans are not shy to show the bass in the recording...

sov, that wasn't me who heard the 750... But you figured me right here: see my post above...

Sorry I miss the original poster of the comparison, but anyway for whomever posted that, there is a diffrence between the two terms in audio...

Guys...I extended the olive branch so as not to enflame the situation.

But I stand by my impressions. I believe the Ed9's bass is [slightly] boomier than the 750's--and I understand that you guys think I've got it wrong.

4N6: maybe we could trade the Stax for the Ed9's for a couple weeks?

There is soooo A ED9 posse.

How do you know your in it???

Do you have the ED9 in your avatar??.....yes, ....your in it...

I think that you maybe have an ["slightly"] wrong concept of what boominess is....

Boy you guys are making it hard on me. I don't care to spend the money on the 9's if they are boomy (at all) but I also understand that there are two very strong opinions on this. Well I guess I will just continue to watch and read. I really would like to get a pair of headphones I would consider near reference quality one of these days not that I have some big expensive amp but I do know sound. Oh, does the Ed. come with the 2.5 or the 3.5. :^) LOL

LOL!

Admit it people, you are all super Bass Heads!

That is NOT going to go over well with the Ed9 Posse!

I never thought I was but now I realize I probably am! I've been spoiled though:




and now I miss it when it's not there. On some electronic music there are whole "instruments" under 60hz that aren't even there on some equipment. I know it's there and miss it when it's missing. The ED9 don't go as low as my sub but come closer than I had expected and are capable of fully reproducing 95% of the music I listen to.

More importantly, they do it well, without boom, bloom or muddiness. The bass is fast enough to resolve details you may not have heard before, like individual vibrations of a bass guitar note, where other cans I've heard (sig) show it as one long constant tone. This is with my system though and I'm sure other systems will sound different. Although the ED9 sound good out of every source I've tried, except PC jack, but what does?

I'm sure there are cans with faster bass though, I haven't heard R10, L3000, PS-1, or any electrostats, yet.

OK I admit it too, I'm in the posse. I'm a fan, so what, sometimes people like some things! As long as you aren't defensive or unreasonable and let your enthusiasm blur your judgment or make you emotional, then I think it's ok. I post in defense of ED9 for the same reason I post anything that's not a question. To share what I believe to be true in case it helps someone, as other peoples posts have helped me. If I see something that I feel isn't true, I speak up so that people don't make decisions on what I think is incorrect information.

In this case I certainly respect the opinions of those who don't like the ED9 bass and I understand why. If you're not a basshead than ED9 might not be for you. They suit me well but I'm still curious to hear more.

"My name is stevenkelby...and I am a bass-head."

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