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TRUTHEAR x Crinacle Zero IEM Review
- Thread starter amirm
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Ok. I've played a bit with my measurement gear to be confident enough in the results. So now I can start to measure all this stack before I giving them to my friends. This is for fun and learning purposes. And I'm glad to hear your questions/corrections/recommendations/etc
Here is my clean and simple measurement setup:
Apple USB-C 3.5 dongle -> Headphones/Mic splitter -> Truthear Zero -> cheap IEC 60318-4 Clone Coupler -> splitter -> Apple USB-C 3.5 dongle
I've bought my coupler here: (75$) https://www.aliexpress.com/item/4000918270847.html
CAUTION! This coupler seems to have inverted polarity
P.S. It's actually my wife's desk. Mine isn't look so tidy and I don't want to show it ))
Here is my clean and simple measurement setup:
Apple USB-C 3.5 dongle -> Headphones/Mic splitter -> Truthear Zero -> cheap IEC 60318-4 Clone Coupler -> splitter -> Apple USB-C 3.5 dongle
I've bought my coupler here: (75$) https://www.aliexpress.com/item/4000918270847.html
CAUTION! This coupler seems to have inverted polarity
P.S. It's actually my wife's desk. Mine isn't look so tidy and I don't want to show it ))
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staticV3
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I've seen this in other thread but haven't gone into details yet. Are these 3 clone coupler samples? Were they measured using provided calibration data? Сan you tell a little more about this?
As I see such clone is almost perfect up to 1k. And up to 7k the error is within +/- 1 dB which is pretty good. Am I right? I'm not really interested in absolute values above 7k 'cause I know it's a clutter.
And one of the reasons I got the coupler is to make a proper eq. And check how consistent are different samples of TCZ. And maybe better match left & right earphones
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staticV3
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Yes.
They were measured Raw. The provided Cal file is next to useless.
Hmm. Where can I read more about this? Do you recommend to use it raw?
Here my cal data in Red. Green 1/6 smoothed
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So what's your simple explanation for why?
I've measured 6 samples from 3 orders from AliExpress (one pair at Sep 17; 2 pairs at Nov 1; 3 pairs at Nov 24) to check how consistent they are.
All the measurements below was done with the same signal level using small silicon tip (with bigger bore) and deep insertion with resonant peak matched at about 9kHz. This way I managed to achieve very good repeatability. For each earphone I've taken average of 3-4 measurements (without reseat) just to smooth run to run variations especially at 20-80 Hz. From my observation this seat gets FR that has less peak at 5kHz that is seen in other measurements. 5kHz peak quite differs with different tips and reseats. Two digits in the graph names is only last two digits of SN so they aren't in order of production. If I'll find some relation between SN range and measurements I'll inform you.
Here's screenshot from REW - it shows not only FR shape but also difference in sensitivity:
Here's all graphs matched at 500 Hz:
So my conclusion is that the difference is a bit bigger than I expected. When all graphs placed on top of each other this looks like the difference is spread almost evenly. But it is not. There's few (out of 12) earphones which is quite far at 200Hz, 2.5kHz and 5kHz. And in some pairs difference between left and right is quite substantial. I'm going to chose pairs which matches better and give to my friends with individual measurements report.
If there's something more I can check for you feel free to ask
All the measurements below was done with the same signal level using small silicon tip (with bigger bore) and deep insertion with resonant peak matched at about 9kHz. This way I managed to achieve very good repeatability. For each earphone I've taken average of 3-4 measurements (without reseat) just to smooth run to run variations especially at 20-80 Hz. From my observation this seat gets FR that has less peak at 5kHz that is seen in other measurements. 5kHz peak quite differs with different tips and reseats. Two digits in the graph names is only last two digits of SN so they aren't in order of production. If I'll find some relation between SN range and measurements I'll inform you.
Here's screenshot from REW - it shows not only FR shape but also difference in sensitivity:
Here's all graphs matched at 500 Hz:
So my conclusion is that the difference is a bit bigger than I expected. When all graphs placed on top of each other this looks like the difference is spread almost evenly. But it is not. There's few (out of 12) earphones which is quite far at 200Hz, 2.5kHz and 5kHz. And in some pairs difference between left and right is quite substantial. I'm going to chose pairs which matches better and give to my friends with individual measurements report.
If there's something more I can check for you feel free to ask
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It's grammatically, semantically and logically incoherent.
And forgot one thing. One earphone came without a metal grid:
staticV3
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maybe it came loose during shipping and is still somewhere in the box?
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That's the second one of those at least I have seen in this thread
Really?)))Mine came with two extra grids, maybe it is for a reason
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They are in one of the many envelopes /baggies somewhere
MajoloBama
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I'd say that is amazingly close…probably measuring diffs.....I've measured 6 samples from 3 orders from AliExpress (one pair at Sep 17; 2 pairs at Nov 1; 3 pairs at Nov 24) to check how consistent they are.
All the measurements below was done with the same signal level using small silicon tip (with bigger bore) and deep insertion with resonant peak moved to about 9kHz. This way I managed to achieve very good repeatability. For each earphone I've taken average of 3-4 measurements (without reseat) just to smooth run to run variations especially at 20-80 Hz. From my observation this seat gets FR that has less peak at 5kHz that is seen in other measurements. 5kHz peak quite differs with different tips and reseats. Two digits in the graph names is only last two digits of SN so they aren't in order of production. If I'll find some relation between SN range and measurements I'll inform you.
Here's screenshot from REW - it shows not only FR shape but also difference in sensitivity:
View attachment 251730
Here's all graphs matched at 500 Hz:
View attachment 251732
So my conclusion is that the difference is a bit bigger than I expected. When all graphs placed on top of each other this looks like the difference is spread almost evenly. But it is not. There's few (out of 12) earphones which is quite far at 200Hz, 2.5kHz and 5kHz. And in some pairs difference between left and right is quite substantial. I'm going to chose pairs which matches better and give to my friends with individual measurements report.
If there's something more I can check for you feel free to ask
Lol, he's been on a roll with that for the last week, at least he's consistent!
yeah, mine too.
I've already matched pairs and can show you extreme example:
This picture shows that we all can love or blame shoutyness but it's actually can be quite different between samples
This picture shows that we all can love or blame shoutyness but it's actually can be quite different between samples
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They close, yes. But it's not measuring diffs I assure you. The repeatability of the described method is so excellent that I am myself surprised
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