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Heir Audio - new high end custom IEM company - Page 37

post #541 of 778
2/3/12 at 10:34am
Thread Starter 
Quote:
Originally Posted by riffola View Post

Based on my conversation with Dr. Moulton, it's a poor seal issue with the testing machine. I am listening closely to the music I know by heart, and I haven't heard anything off so far. In fact all I hear is amazing clarity and accuracy.

 

If there was a 10db difference, I am sure I'd notice. I'll still listen carefully. If anything is truly off, which I doubt is the case, then I know Heir Audio will go out of their way to fix it. They're good people and I am not worried about giving them my business.



That seems like a reasonable explanation. I know Tyll hasn't tried measuring customs for that same reason. 

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post #542 of 778
2/3/12 at 3:51pm


 

Quote:
Originally Posted by project86 View Post



To some degree, yes. It looks pretty much just like I'd expect it to look, until around 6kHz or so. From there is just gets wacky. The drivers look totally mismatched, and the response pretty much drops off altogether above 10kHz. That's not what I'm hearing from mine at all, and I bet it isn't what you are hearing either. With dual high and dual super-high frequency drivers, there's just no way this is an acceptable representation of the 8.A sound. Either yours are defective, or this chart is wrong (and I'm leaning towards the latter being the best explanation). 



I guess i will be sending the 8.As back after a listening to em for a couple of minutes.

 

Firstly, the 8.As are giving me a fatiguing listening experience within a minute or so. The highs are pretty messed up and i am experiencing sibilance and is nowhere closed to the 'smooth' treble experience that is mentioned in many of the reviews out there. Instrument seperation is a hit and miss and i know it could be better.

 

Well the good news is despite receiving a partially defective unit, i could already see the potential in the 8.A particularly in the bass and vocal region. It strives to achieve musicality and perfect accuracy at the same time.

 

The lows are fantastic (it goes deep and hard hitting) and the mids are a worthy competitor to my ES5s. I tested with pure vocal tracks and i dont face this problem. I have emailed John regarding this and will be expecting a response from him soon. Wow dang i am probably the first 8.A user with such problem here :(

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post #543 of 778
2/3/12 at 3:55pm

I find my J3 makes a mess of driving custom IEMs (poor treble and poor bass response) - I don't know how the Z1070 handles low-impedance multi-BA CIEMs, but I'd suggest you try your 8.As with a better amp (and burn them in a bit) before sending them back to China.

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post #544 of 778
2/3/12 at 3:56pm
Quote:
Originally Posted by underhysteria View Post


 



I guess i will be sending the 8.As back after a listening to em for a couple of minutes.

 

Firstly, the 8.As are giving me a fatiguing listening experience within a minute or so. The highs are pretty messed up and i am experiencing sibilance and is nowhere closed to the 'smooth' treble experience that is mentioned in many of the reviews out there. Instrument seperation is a hit and miss and i know it could be better.

 

Well the good news is despite receiving a partially defective unit, i could already see the potential in the 8.A particularly in the bass and vocal region. It strives to achieve musicality and perfect accuracy at the same time.

 

The lows are fantastic (it goes deep and hard hitting) and the mids are a worthy competitor to my ES5s. I tested with pure vocal tracks and i dont face this problem. I have emailed John regarding this and will be expecting a response from him soon. Wow dang i am probably the first 8.A user with such problem here :(


This doesn't make me feel good!

 

Be sure and post his response. They are swamped right now so maybe that has something to do with it. Rushed it out the door. I would happily wait 6 weeks than have to ship it back.

 

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post #545 of 778
2/3/12 at 4:07pm
Quote:
Originally Posted by Mython View Post

I find my J3 makes a mess of driving custom IEMs (poor treble and poor bass response) - I don't know how the Z1070 handles low-impedance multi-BA CIEMs, but I'd suggest you try your 8.As with a better amp (and burn them in a bit) before sending them back to China.



The thing is that i am not experiencing such issues with my ES5s. I am getting pretty much the same results after a LOD to my fiio amp. It is not a high end amp but the imperfections i receive in the highs are quite prevalent. 

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post #546 of 778
2/3/12 at 4:09pm

well it doesnt matter anyway.. i will be most probably sending them back for a musician fit as i prefer the canals to go in deep o2smile.gif

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post #547 of 778
2/3/12 at 4:26pm

I am no good with describing music based on frequencies but i did try playing some treble eccentric songs( from rock to the heavy death metal) to find where the fault lies. The cymbals and double pedals are definitely harsh. I will definitely go deaf if this carries on.

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post #548 of 778
2/3/12 at 5:44pm
Quote:
Originally Posted by underhysteria View Post

I am no good with describing music based on frequencies but i did try playing some treble eccentric songs( from rock to the heavy death metal) to find where the fault lies. The cymbals and double pedals are definitely harsh. I will definitely go deaf if this carries on.



hmm what EQ setting are you using with your J3?   

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post #549 of 778
2/3/12 at 7:27pm

No EQ. The results are the same with my walkman and sansa (both LOD to E11 amp)

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post #550 of 778
2/4/12 at 12:14am

 

 

Quote:
Originally Posted by underhysteria View Post

well it doesnt matter anyway.. i will be most probably sending them back for a musician fit as i prefer the canals to go in deep o2smile.gif



your es5 has deeper/longer canals?

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post #551 of 778
2/4/12 at 2:26am
Quote:
Originally Posted by klyzon View Post

 

 



your es5 has deeper/longer canals?


Yes. The canals of my es5s are past the 2nd bend in the ear
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post #552 of 778
2/4/12 at 4:35am
Quote:
Originally Posted by underhysteria View Post


Yes. The canals of my es5s are past the 2nd bend in the ear


wow i didn't know that, was it by choice or by default?

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post #553 of 778
2/4/12 at 7:56am
Quote:
Originally Posted by klyzon View Post



wow i didn't know that, was it by choice or by default?



Default (probably a 'mistake' on their part?). It was quite uncomfortable for a while but it is actually quite stable and allows for better volume control.

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post #554 of 778
2/4/12 at 8:02am
Thread Starter 

Check out this pic of my UM Merlin graph. This is the prototype Merlin with somewhat more subdued bass than the final design, but it is close enough.

 

my Proto Merlin.jpg

 

 

Look how similar it is to the 8.A chart posted earlier - from 20Hz to around 6kHz, it has a very similar curve. But then look at the rest of the chart. In my humble opinion, there is no way that 8.A chart is accurate in the region above 6kHz. 

 

93e24814_P2030054.jpeg

 

The boost at 5-6kHz looks worse than it really is - most TWFK based designs have a similar appearance, which is meant to compensate for the loss that we aren't getting from the external ear (which would give a natural boost in that range when using full size cans or speakers). Plenty of UM designs have a similar boost, many of them looking closer to the above 8.A chart than my Merlin chart. So that isn't the issue at all. 


Edited by project86 - 2/4/12 at 8:14am
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post #555 of 778
2/7/12 at 6:31am

Got an email last night that said some 8.A's were headed my way. biggrin.gif

 

 

1.JPG

2.JPG

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