It's so fascinating to see how something so small can produce sound that changes the competition in such a vast manner. I guess that's the magic of knowledge and development. Amazing teardown video!

4:55 Two words: "Inverted Polarity" 🤫

it's actually really interesting to see this teardown and how much engineering actually goes into these things. also, i like the clear-coat look, lets you see the internals. Cool

Superb tear down. Learning so much... Big Thanks...

These seem like they are really carefully crafted. Cause it sounds like one small adjustment out of place can completely alter the sound of iems. Didn't know iems were so sophisticated in their internals

Great work thank you HiFri👍👍👍

It is deliberate. It forms a crossover attenuation of same freq from drivers. Back in the day, cheap speakers used this, so they didn't need an elaborate crossover.

After reading your review, I'm going straight to the order!

Good stuff man. Thank you.

Inverting drivers polarity it´s not weird at all. Pretty common for compensating xover phase shifts...

@hi-friaudioman

10 ай бұрын

True, I wasn't sure if that was a thing or not. I do it in my 1+3 iem. I invert both mid-range BA and I've had good success with it but it's rare that I've seen it in iem's.

Great stuff.

Bruh you saved my life i managed to pull out the dampeners to clean my hexa

very peaky and meticolous, very good job haha!

Super informative 🙏

i usually hate when people destroy products, but this video was rather entertaining/informative.

Great job as always. maybe i ask if the glue that the BA used has some sort of green-ish / brown-ish nature to them? i think delta fyre mistook that as oxidation.

@hi-friaudioman

Жыл бұрын

Yeah its a brownish glue. It's some gross stuff and definitely not oxidation.

I wonder how hard it'd be to 3d print a new faceplate. Great video

New subs here, thanks for your videos. If I may ask you honest opinion, which one would you recomend between HEXA and KZ PR1 PRO? Which one have better sound quality and soundstage? I'm looking for upgrade from ARIA. Thanks for your response man 😊👍

Yeah the Hexa is known to have fully inverted polarity. Big debate over whether it's a bad thing in terms of sound.

@Gabrielnfs

Жыл бұрын

Objectively speaking it's at the very least wrong and a bad practice. Subjectively speaking it's arguable whether or not it's that big of a deal. I'd prefer if they just got the polarity right.

@kweekeongthen8470

Жыл бұрын

at least let consumer know your product are reversed polarity not follow original recording. People can choose which tuning are suitable. Some people may prefer original red apple, some may prefer uncorrect blue apple.

@superdominator2010

Жыл бұрын

​@@kweekeongthen8470 but you can just plug a cable the opposite way and a problem will solve

@kweekeongthen8470

Жыл бұрын

@@superdominator2010 problem is i suggest people to reverse the cable to test. They think i am crazy people who like uncorrect polarity.

@SSAMGS

Жыл бұрын

@@kweekeongthen8470 The problem is reversing the cable wouldn't really work for fixing polarity for hexa since not all drivers are inverted and reversing the cable would just switch which drivers are inverted

Cool. I just gonna buy Hexa to see how much I can improve the tonality - lower the mids. I'm pretty good at loudspeaker crossovers, but headphones might be a little different without specialized CAD.

Just asking. Why not some kind of membership or patreon? Your videos are a lot of work and so much better than most "review" channel's. So maybe you can invest in some more high end teardown stuff. Or somewhere around the €500,- market to start. 250 -500

when i install in the fliter tip how can i distinguish knowles damper front side or back side? for example:my westone b30's damper(red one) the side of the arc its to the in side but another iem um pro 30's damper (white one) its another side. what a interest. 17:32 BQEYZ Autumn also have similer design. from Taiwan hi-fier, like your video bro.

I feel like one of the drivers in my right monitor gave up. There is an imbalance where the left sounds much fuller, probably the mids BA died. I have already eliminated the cable or the dampers as the cause. Will have to measure them. Sooo… should I open them and try to fix em or will I destroy the casing or the internals?

what's the tool you used to pull the dampener out called

Im surprised how much is in a fairly cheap iem .Great vid .Thank you .

i dropped mine upon opening them up unfortunately. i tried listening to them and they sound normal to me, surely they can take a fall and remain undamaged right?

Is it possible to remove the stucked pins in the iems when opened?

That's array driver or series installation it's supposed to be that way as far as I can tell.. Tell m if I am wrong and why as I have done this before in a small Bluetooth speaker I made

How exactly do those dampeners on the nozzle affect the sound?

Please do a full teardown with hm20 just like this

@hi-friaudioman

Жыл бұрын

Will do. :-)

why did you put clear coat on?

I hope it won't let me down.

So.. what happens to a normal user when something like earwax or lint eventually blocks that tiny hole the DD has?

@LaughterChief

6 ай бұрын

WW3

Inverted BA could be here just for tuning purposes. It might tame the DD a bit. This could be easily tested with a mic and software to show a graph with both, and single drivers active. Do it. Your channel will grow.

@FatOnAxis

Жыл бұрын

Naa Inverted does not show in magnitude response.

@veltruski

Жыл бұрын

@@FatOnAxis but it attenuates the overall frequency curve. It "irons out" the sum of frequencies.

@FatOnAxis

Жыл бұрын

@@veltruski no it doesn't show in magnitude response

@veltruski

Жыл бұрын

@@FatOnAxis I know you cant see it It affects the overall frequency. If it's used like that. You wouldn't be able to see it, but it would affect the response. Unless it's mute. Then it's there just for show.

@FatOnAxis

Жыл бұрын

@veltruski it affects phase response, not magnitude responce

Hi-Fri Audio, I had a KZ PR1 hi-fi version - annoying high frequencies interfered a lot, now a balance version has arrived - with high frequencies more or less, but massive bass often interferes. Is it possible to somehow reduce its mass - add compensation holes or in another way ??? Thanks in advance.

@hi-friaudioman

Жыл бұрын

If the bass is interfering you can try to use a needle to carefully poke the hole in the front to vent the bass, however this is irreversible and you can damage the driver if you poke too far. You can buy a dampener set on aliexpress if you make the hole too wide but they have to go on the outside of the shell and sweat and wear can make them fall off but they're pretty cheap and last a little while. You can also try changing/adding more dampener on the back of the planar and that might help the bass. This is the safest way to tune the bass but you will have to remove the faceplate to reach the back of the planar.

@genaishivatov1737

Жыл бұрын

@@hi-friaudioman and if you make small holes on the faceplate - a little bit, a little at once - but a few ???

How would you go about opening a mental shell like the moondrop aria? Some heat and pry? Would heat damage the driver?

@hi-friaudioman

Жыл бұрын

Heat will definitely damage the driver if too much heat it applied. You can try leaving them out in the sun for a couple hours which shouldn't hurt. Also I recommend buying a razor knife to split the seam. It's a little dangerous to attempt but a razor knife and a small hammer work well with heat. This is how I open 90% of my iems and it works well but takes time to figure out without accidentally cutting yourself or getting metal in your eye so just be careful.

@Ethan-mw1qx

Жыл бұрын

@@hi-friaudioman Awesome. Appreciate your videos and response. Always interesting to see all your different tear downs, not a lot of documented footage elsewhere.

So thruthear making the faceplate only attached with one screw so it's easy to remove, super clever. And does removing the damperner on that excess pressure really change the sound drastically?

@hi-friaudioman

Жыл бұрын

There is glue holding the faceplate too, also yeah the dampener makes a big difference when removed. It will destroy the bass though.

Are you gonna check out 7hz legato?

@sagaman4785

Жыл бұрын

7hz Legato looks interesting, bass canon, but looks well tuned. A review and tear down would be great! The Simgot EA 500 would be a good one to review as well.

@LISTEDGames

Жыл бұрын

@@sagaman4785 I like bass cannons!

@hi-friaudioman

Жыл бұрын

Hopefully. I don't want to spend the $100 but if someone wants to send it to me that would be cool.

@sagaman4785

Жыл бұрын

@@hi-friaudioman I was looking at the Penon audio IEMs and don’t know much about them. Are they any good? Akros is the only one that seems to be reviewing them.

23:23 XD

Are all the drivers in use? i ordered some kz zex pro. But apparently only one driver is in use so I got a refund.

@Chewwish7676

2 ай бұрын

that's just kz lol

Very interesting accent. As a person who speak rolled R natively, I am tingled by this 😂

Why’d you put clear coat on the translucent side? 😮 Also where can I buy those tiny filter tubes?

@hi-friaudioman

Жыл бұрын

They are normally cloudy and I wanted to see inside clearly. That is why I put clear coat on them. Here is a link to the filters. US $2.00 | LS damping acoustic impedance headphones tuned to dental frequency division filter moving iron damper is 2 PCS a.aliexpress.com/_mq4eJd4

@athenovae

Жыл бұрын

@@hi-friaudioman Thank you! 😀 Also I just had a look, and was wondering why they are differentiated in Ohms of resistance. Is it air resistance? 🤔

@fakedcastle5950

Жыл бұрын

@@hi-friaudioman Omg. This saved my ass. Had problems with my old filters. Shenshenaudio told me filters don't exist. Randomly found this, and now I have new filters for dirt cheap! thank you so much.

@jasonbrown31485

Жыл бұрын

Do you think clear nail polish would make them look more clear like this? If not what’s the cheapest and most simple way to make them more clear like this?

@veronic451

11 ай бұрын

@@hi-friaudioman which ones do I buy? green and yellow?

I cant get the backs off of mine for fucks sake

why is your hexa shiny

@soarcheetah

8 ай бұрын

19:57

does they wirth the hype? any real feedback about soundquality? they've been compared to blessing 2

ok but not everyone has spring break at the same time bruv (im in us )