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Posts by Aero Dynamik

Very interesting! I was of course aware of the phenomenon but not aware that it had been scientifically mapped. So in short, SPL has a fundamental effect on how we perceive FR. That would explain why I intuitively prefer different volumes with different IEMs. It could definitely also help to explain why different people experience the same IEM with the same recording differently. For example, when the DN-2000J came out quite a few knowledgeable Head-Fi:ers - to my surprise...
[[SPOILER]] Thanks mark88888! I'm afraid not. As I mention in my post I sold it as I felt that it was underperforming in the lowest frequencies. Many others have expressed such concerns/objections over the years about the previous ER4 versions, and if I'm not misinformed that's why Etymotic finally decided to something about it; hence the ER4XR. Do note that in no way do I experience the XR as bass heavy but in fact still very, very accurate. I find the implementation of...
For those of you having a hard time to choose between the ER4SR and the ER4XR, here is why I ultimately decided to go with the ER4XR.   I have a history with the ER4PT and the reason to why I (at the end of the day) sold it was that I felt it wasn’t accurate; that it was depressed in the very lowest frequencies (< 40 Hz or so). Of course, from a clinical point of view the bass frequencies of the ER4PT weren’t depressed but that’s how I heard it.   I should mention that...
John! Let us know why you prefer the DN2002. Your opinion matters!
For anyone possibly interested I just want to mention that I made a few minor alterations to my "ER4XR mini-review (the stuff that interests me)" in an attempt to balance my wordings a bit more. I also added a link to a post where I compare the ER4XR and DUNU-2000J with a few additional words.
I agree, if we can't easily tell the difference between L and R it's a problem. Comply Foam have the 100 series ear tips (recommend by CF for many ER4s) which come in various colors. That is, you could use different colors for L and R. However, a big warning here! The T-100 medium size I've tried with the ER4XR didn't work very well at all. They felt much too soft and the isolation was (to my surprise) very substandard.
Can't say for sure as I haven't heard the SR, but a qualified guess would be the ER4SR. Personally, I'd stay away from the SR and pick up the XR. That is, if sub bass is at all important to you at - what I experience as - "normal" listening volume.
Though questions but I'll do my best to answer them... Well "better" just doesn't cut it, but I'd say the XR is cleaner (more transparent) and more accurate for acoustic instruments. But it's not that easy. Unlike the 2KJ, with the XR you do not really have the option of listening at low volumes to pick up details in treble and bass. The XR requires at the very least a "normal" listening volume to be able to shine in all frequencies. For non-classical music - where lots of...
For those of you interested I just posted my impressions of the new Etymotic ER4XR (the legendary neutral reference IEM) in this post and made a few comparisons with my beloved DN2000J.
You’re welcome, and thanks!Also, thank you guys for adding reputation to my post! As you know; it takes a bit of effort to put your thoughts together in writing, so much appreciated! I should take the opportunity to mention how happy I am I gave the “ER4 concept” another chance. As I have a history with the ER4PT I pretty much knew what to expect. And as I’m one of many having expressed a wish for a tad bit of extended bass response in the past, I felt obliged to give it...
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