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JH Audio JH-13 PRO appreciation thread - Page 655

post #9811 of 10289

I originally purchased my JH-13s in January of 2012 and loved every moment of listening to them. A couple of weeks ago, I sent mine in for service due to issues with dirty filters affecting sound quality and the fit gradually became uncomfortable. I sent them in with a new set of impressions and they took care of the service and refit free of charge. When I got my package back from FedEx, FedEx had smashed the shipping box, which in turn smashed the Otter Box that came with my JH-13s. FedEx claims that they are not responsible for damage to contents of packages and was no help to me. I sent JH Audio an email about it and they've been helpful with finding me a replacement. 

 

From a sound signature perspective, my JH-13s have always been my favorite IEM. However, since I got my refit back, the sound signature has significantly changed, to the point where it is uncomfortable to listen to. I'm not great at describing sound, but there is certainly a new prominence in high range. I wouldn't say it is sibilant, but it certainly seems edgy, and every last bit of recording static/ noise comes in with an exaggerated quality. Some songs seem okay, but I can't even make it through London Grammar's Strong without taking off the headphones. 

 

I noticed a difference in the positioning and implementation of what I believe to be the high frequency armatures. Before, the high frequency armatures were actually placed in the canal, while they're set back now. What concerns me is easily visible in the photo below. On my old pair, a soft plastic tube accompanied the bores all the way to the tip of the canal on both bores. Now, only the bore for the low/ mids has the tube accompanying bore to the tip. The tube in the bore for the highs only extends about 2 mm past the filter, leaving the remaining 4 mm of the bore wider and exposed to the acrylic of the shell. I'm wondering if this is causing some sort of odd harmonics.  

 

...I'll be giving JH Audio a call on Monday to figure this out.

 

post #9812 of 10289

More pics = better, but it might just be the difference between pre-FreqPhase and FreqPhase. Tweeters are placed a lot farther than the subs. Not sure about the tubing, but what you're looking at doesn't look like tweeters to me.

post #9813 of 10289
Quote:
Originally Posted by Girls Generation View Post  More pics = better, but it might just be the difference between pre-FreqPhase and FreqPhase. Tweeters are placed a lot farther than the subs. Not sure about the tubing, but what you're looking at doesn't look like tweeters to me.

 

No, that's not FreqPhase positioning. Besides, FreqPhase uses different drivers (they look the same, but perform differently). This is strange. They're using a stepped horn segment, and I've never seen a JH13 constructed that way, FreqPhase or not.

 

Vansen, it's possible your tweeters were performing out of spec (roll-off) and so they attempted to offset the performance by using a stepped horn (amplifies high frequencies) without having to replace the tweeters. What you're hearing, however, may just be what is originally the JH13 sound signature. If your dampers had gotten so used that they needed to be replaced, it's possible you havent' been hearing the "real" JH13 sound signature for some time and your ears need time to readjust.

post #9814 of 10289

Looks like the woofers to me in that pick and the tweeter/mids are further back in the shell. They're not FPs (3 vs 2 bores) and the expanded bore may have just been for access to that filter. I think it's just needing to get used to clean filters again. You may have made some DAP or other choices to compensate for the previous dullness that you are now hearing as well.

post #9815 of 10289

I think I'm going to need another refit on these. My right monitor is a bit loose inside so it moves while I'm walking. It's definitely much better than the first time however. In any case I don't want to send them in since I really like how they sound but I'll do that later today I guess. 

post #9816 of 10289
Quote:
Originally Posted by goodvibes View Post
 

Looks like the woofers to me in that pick and the tweeter/mids are further back in the shell. They're not FPs (3 vs 2 bores) and the expanded bore may have just been for access to that filter. I think it's just needing to get used to clean filters again. You may have made some DAP or other choices to compensate for the previous dullness that you are now hearing as well.

 

Cool, thanks for clarifying which armatures those are. There is definitely not an issue with the bass response, so I'll put that hypothesis to rest.

 

Quote:
Originally Posted by tomscy2000 View Post
 

 

No, that's not FreqPhase positioning. Besides, FreqPhase uses different drivers (they look the same, but perform differently). This is strange. They're using a stepped horn segment, and I've never seen a JH13 constructed that way, FreqPhase or not.

 

Vansen, it's possible your tweeters were performing out of spec (roll-off) and so they attempted to offset the performance by using a stepped horn (amplifies high frequencies) without having to replace the tweeters. What you're hearing, however, may just be what is originally the JH13 sound signature. If your dampers had gotten so used that they needed to be replaced, it's possible you havent' been hearing the "real" JH13 sound signature for some time and your ears need time to readjust.

 

Mine are definitely pre-FreqPhase.

 

I was thinking the same thing (that I'm just not used to the signature), and hopefully that's my issue. I'll give them a few more days. When I sent them in, I knew they had issues, as my ER-4p ran circles around them at the time.

post #9817 of 10289
Quote:
Originally Posted by rawrster View Post
 

I think I'm going to need another refit on these. My right monitor is a bit loose inside so it moves while I'm walking. It's definitely much better than the first time however. In any case I don't want to send them in since I really like how they sound but I'll do that later today I guess. 

I just put a layer of clear acrylic nail polish where they needed it. Safe to remove as well as long as you protect the bores.


Edited by goodvibes - 12/16/13 at 11:59am
post #9818 of 10289
It's not a big deal to send them in so I'll do that. This is the reason why I refuse to deal outside of the country with customs. Shipping with insurance of 1k to a different country will get real expensive quick.
post #9819 of 10289
Quote:
Originally Posted by goodvibes View Post
 

I just put a layer of clear acrylic nail polish where they needed it. Safe to remove as well as long as you protect the bores.

How do you remove it, with nail polish remover? (I had assumed that wouldn't work since the earpieces are acrylic as well.)

post #9820 of 10289

Yes but cover the bores and test a small dot somewhere first but it has been no issue on mine as I've done do overs. For me it wasn't fit as much as nozzle aiming. I've also done some sanding and polishing and you could never tell but I'm very handy at this sort of thing. Not recommended and definitely warranty breaking though a layer of enamel should be fine if normal care is taken. The guys at JH aren't anal but I wouldn't expect them to cover things not of their doing.


Edited by goodvibes - 12/18/13 at 2:42pm
post #9821 of 10289
Quote:
Originally Posted by rawrster View Post

It's not a big deal to send them in so I'll do that. This is the reason why I refuse to deal outside of the country with customs. Shipping with insurance of 1k to a different country will get real expensive quick.

I feel the same way. I'm just anal about the fit so finished it of myself. This long distance stuff is tough.

post #9822 of 10289
I had that happen to me before with refits from a company out of my country and ended up selling it because of fit but lesson learned. Even one of the audiologists that know what they are doing doesn't guarantee a perfect fit. It's probably my ears as my right ear always has issues.

Anyway I'll probably send them tomorrow after work back to jh audio. My V6 Stage is about to get some serious time after.
post #9823 of 10289

 

Wanted to express my appreciation for this thread and add this picture to the club.  Been listening to these for about a week now and have to agree with all the positive feedback for the JH13FP. These sound so good straight out of the galaxy Note 3 with 320kb mp3 that I experience more detail retrieval and emotional pull-in than with my good old Senn 650, algorhythm solo, and continental v2 combo!  Time to pear down and be truly portable.  The comfort/fit is perfect.  

 

This has probably been stated but having had a couple sets of IEMS made, I prefer vigorously "chewing with my mouth open" while the impressions cure up.  I don't stop moving my jaw around until they are ready to take it out and it resulted in a perfect fit this time.  YMMV.  

post #9824 of 10289
Hope this is not a silly question, but as a basshead how does the quantity of the bass compare to Westone 3? (The W3 has a mid-bass hump).
post #9825 of 10289

The jh13 doesn't have a midbass hump. The bass sort of increases as the frequency drops.

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