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T-PEOS H-200 - new triple hybrid IEM - Appreciation thread - Page 18

post #256 of 2573
Quote:
Originally Posted by FlySweep View Post

Putente, H2O, and myself will be getting reivew samples.  A Shinwoo rep that we've been in contact with was supposed to send out the samples to us last Friday.. that got pushed back to this last Monday (yesterday, 4/15).. and now he's said the samples will ship out to us at the end of this week (Friday).  He apologized & mentioned the delay was due to some final tuning tweaks.  How significant these 'final tweaks' will be remains unknown, but considering that they're being done this close to the official RTM date, I can't imagine that they'll being anything drastic.

 

So if Shinwoo is on schedule, the highly anticipated first samples should soon be winging their way to our respected reviewers since it is now Saturday in Korea. Hopefully they are on track but naturally perfecting the tuning is paramount. 

post #257 of 2573

Rin's data analysis for Seeko

 

They tamed a peak but created a big dip. Similar tonality to H100, similar bass levels. High distortion :/ like the H100


Edited by Inks - 4/22/13 at 9:27pm
post #258 of 2573
Egads..... 😨
post #259 of 2573

Aren't those charts of the work-in-progress build prototype  and not the final tuned retail version?

 

Or is that all from the finalized version that has yet to ship out and he got one of the final retail ones before any of the demo reviewers


Edited by nick n - 4/22/13 at 9:48pm
post #260 of 2573

It's the final product, Seeko is Korea based and keeps in close contact with T-Peos. Time will validate this, Seeko makes the disclaimer otherwise.


Edited by Inks - 4/22/13 at 9:52pm
post #261 of 2573
that's really odd with the dip between 3-10k
the csd shows ringing in the top highs as well doesn't it? the dip is just “:/“
if these are correct measurements I don't think I want one.
Edited by svyr - 4/23/13 at 1:24am
post #262 of 2573
dbl post
Edited by svyr - 4/23/13 at 1:23am
post #263 of 2573

The phase/impedance behavior, along with the big dip, confirms this is a TWFK wired in normal phase to both drivers. To avoid the big dip, they need to reverse the phase on FK when they wire a capacitor to high-pass it... However, there will still be a resonant peak up at 8.5k, and the FK will lose bandwidth below 2.5k, so the dynamic driver has to provide some midrange effect to hit the target FR. I also have no idea how reversing the phase hookup of the FK will impact the sound. There's probably not enough room to wire both a cap to the FK and the WBFK, and still hide it in a small enough footprint. Looking at the assembly, there should be plenty of room... nevermind.

 

EDIT: I'll speak to a Knowles engineer that I know to see what's up here, but I should be right.


Edited by tomscy2000 - 4/23/13 at 3:29am
post #264 of 2573

TWFK should cover 500 & above region very well. I dont think they should be using Dynamic driver for mid range above 500Hz.  TWFK implementation or tuning certainly seems wrong here if that dip is not coming from measurement rig.

post #265 of 2573
Quote:
Originally Posted by MuZo2 View Post  TWFK should cover 500 & above region very well. I dont think they should be using Dynamic driver for mid range above 500Hz.  TWFK implementation or tuning certainly seems wrong here if that dip is not coming from measurement rig.

 

Take a close look at what they're trying to do; because they're trying to fulfill the GoldenEars' target, they're trying to match the steep SPL climb of the canal gain from 800-2500, but the FK doesn't peak that high, so they're instituting a high-pass to pull it up higher. However, in normal phase, the FK quickly loses bandwidth above 3k, and the WBFK can't make up the gap. This TWFK "gap phenomenon" occurs pretty much everywhere when designers are trying to reach certain SPL targets at specific frequencies. It's what caused the rukus with the 4.Ai a few months back as well. I'm not saying they're "using" the dynamic driver, but if they choose to reverse phase the FK like I mentioned, then the corner frequency of the low-pass will have to be raised to match the target. It likely won't be much, but how much, I don't know.

post #266 of 2573
Quote:
Originally Posted by Inks View Post

Rin's data analysis for Seeko

 

They tamed a peak but created a big dip. Similar tonality to H100, similar bass levels. High distortion :/ like the H100

 

山米舛 (San Mi Cheon), He is not an official audio engineer. Just an audiophile like us. And really hostile to Golden Ears' measuring.

I can't acknowledge his information before Golden Ears has any report about H-200.

post #267 of 2573
Quote:
Originally Posted by Inks View Post

It's the final product, Seeko is Korea based and keeps in close contact with T-Peos. Time will validate this, Seeko makes the disclaimer otherwise.

 

Actually, T-PEOS has contacted to Seeko instead of Golden Ears.

T-PEOS will no longer contact to Golden Ears.

post #268 of 2573
Quote:
Originally Posted by svyr View Post

that's really odd with the dip between 3-10k
the csd shows ringing in the top highs as well doesn't it? the dip is just “:/“
if these are correct measurements I don't think I want one.

 

I don't think it is not a correctly measured graph.

And I can't understand my experience and that strange graph.

post #269 of 2573

Not phased by any graphs and looking forward to receiving a pair to judge with my ears, the important part in any IEM.

post #270 of 2573
Quote:
Originally Posted by Sinth View Post

Not phased by any graphs and looking forward to receiving a pair to judge with my ears, the important part in any IEM.

 

*fazed (for future reference),

 

and I agree with you that graphs don't tell the whole story. Unfortunately, they did in the case of the H-100. They seem to be going in the exact same direction with the 200, following some phantom idea of an ideal curve that most find unlistenable. They're the ones following the graph.

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