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Author Topic: A Korean website measured the JH Roxanne  (Read 5563 times)

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tomscy2000

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Re: A Korean website measured the JH Roxanne
« Reply #20 on: August 27, 2014, 05:39:26 PM »

This one also has the gigantic spike, perhaps similar to the first one.

I still think they're doing something incorrectly --- it's clear that guy is "SoonJa" as quoted in the Seeko reviews. One criticism I have about what they do is that they push the drive power far too high, at 1 mW, which sends everything into distorting madness, ruining a useful look at distortion profiles.

Also, I'm no rabid Jerry Harvey fan, and especially because of their business practices I won't be getting anything from them any time soon or ever, but I just can't plausibly see the Roxanne looking like that in a real ear. It doesn't measure like anything I've heard it sound like, and the choice of drivers, although excessive and definitely does tend toward that way in measurements:



Allow me to slot in my impressions:

Roxanne (Universal) vs JH13Pro (Demo):

Roxanne has this kinda weird hi-sound, like for eg. the hi-hat sounds too splashy compared to JH13Pro, which is to me an alright quantity. The bass is weird too, like felt smaller sounding yet not so tight. The stage has somehow widened because every instrument sounds "smaller" to my ears. 13 sounds rather clean and every instrument is clearly in place. Even the vocals have good breathing sound which i like very much.

The store advertised it as the Rock star IEM. I guess YMMV.

I heard the bolded parts opposite from you for some reason. Hi-hats come off less splashy in the universal Roxanne than the JH13FP demo, while the Roxanne at bass minimum still has more quantity than the JH13.
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Anaxilus

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Re: A Korean website measured the JH Roxanne
« Reply #21 on: August 27, 2014, 08:02:06 PM »

I heard the bolded parts opposite from you for some reason. Hi-hats come off less splashy in the universal Roxanne than the JH13FP demo, while the Roxanne at bass minimum still has more quantity than the JH13.

I think it's a matter of chosen vocabulary.  Agreed about the bass being more in the Roxanne no matter what.  I also agree with you about the 13 treble being more splashy.  I think phillip might be saying the Roxanne is less natural, perhaps dryer whereas the 13 although splashy is more 'sweet' sounding.  Or not...
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phillip88

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Re: A Korean website measured the JH Roxanne
« Reply #22 on: August 27, 2014, 11:32:03 PM »

I'm not entirely sure what would be the reason of the difference (or perhaps the choice of words). Roxanne has more bass but sometimes it feels "small". I mean, it sound kinda distance to my ears. Not just the bass, but other frequencies as well. Maybe it's due to the tips I used?

The first overall impression I got from Roxanne is :Weird. It's really uncommon to have such strange presentation. Definitely not "better" than 13.

One more, I wonder if this is due to Roxanne being more affected by the H/O 3 Ohm output compared to 13? Although I doubt this would have too much of an impact.
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slim8452

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Re: A Korean website measured the JH Roxanne
« Reply #23 on: August 28, 2014, 08:26:16 AM »

it was measured with  B&K 4157
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slim8452

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Re: A Korean website measured the JH Roxanne
« Reply #24 on: August 28, 2014, 08:33:21 AM »

This one also has the gigantic spike, perhaps similar to the first one

I posted that graph on head-fi. I hope you realize that it is a same graph that you post
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tomscy2000

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Re: A Korean website measured the JH Roxanne
« Reply #25 on: August 28, 2014, 11:02:26 AM »

I posted that graph on head-fi.

Hi, nice of you to join in the conversation!

I have a question about why you guys test THD @1 mW? Wouldn't it be more useful to set the output volume at 85 and 100 dB(A) and measure the distortion that way? 85 dB(A) is the recommended maximum listening volume over an 8 hour workday according to OSHA/NIOSH (and almost all international metrics on noise exposure), while 100 dBA is usually thought to be "very loud". Usually, depending on the headroom they have, the input sensitivities of IEMs, such as multi-BA IEMs, usually are over 110 dB/mW, meaning that the distortion profiles shown are well over acceptable drive volumes (and therefore not useful for responsible listeners, not saying anything about stupid teenagers that voluntarily want to go deaf).
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slim8452

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Re: A Korean website measured the JH Roxanne
« Reply #26 on: August 28, 2014, 06:31:24 PM »

I posted that graph on head-fi.

Hi, nice of you to join in the conversation!

I have a question about why you guys test THD @1 mW? Wouldn't it be more useful to set the output volume at 85 and 100 dB(A) and measure the distortion that way? 85 dB(A) is the recommended maximum listening volume over an 8 hour workday according to OSHA/NIOSH (and almost all international metrics on noise exposure), while 100 dBA is usually thought to be "very loud". Usually, depending on the headroom they have, the input sensitivities of IEMs, such as multi-BA IEMs, usually are over 110 dB/mW, meaning that the distortion profiles shown are well over acceptable drive volumes (and therefore not useful for responsible listeners, not saying anything about stupid teenagers that voluntarily want to go deaf).

Yes I agree with your THD measurement method. The community website is called Seeko.co.kr and I am one of the measurement believer there. Some of measurement believers including me had recommended seeko to measure THD with db level, yet it has not changed......
I know it is inconvenience way since all of iem has different sensitivity and impedance.
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tomscy2000

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Re: A Korean website measured the JH Roxanne
« Reply #27 on: August 29, 2014, 09:51:24 AM »

Ah, okay. I thought you were the one actually doing the measurements, sorry.
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