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Low end. Cheap. Generic. Otherwise bang for buck cable thread!

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  1. superuser1
    Last edited: Apr 18, 2019
    hakuzen, Slater and BadReligionPunk like this.
  2. music_man
    Look at my other post. For a little more you get the best bar none. So why not spend a bit more? I mean not much more than these. Also Dyson Audio on Ebay will build you anything you want for dirt cheap. Cables in the store have crazy mark ups.
  3. BadReligionPunk
    yea I have a multimeter.
    Those are what I have. Very soft and flexable. Just confused by them.
    Slater likes this.
  4. BadReligionPunk
    By the way thanks guys :]

    So if Im understanding correctly. The blue line is + and should plug into the rounded part of the c10? I was just cornfused because the blue line is on the same side as the red pin so I was wondering if its + or -
    Last edited: Apr 19, 2019
    sareer007 likes this.
  5. candlejack
    Does it really matter though? It should only affect polarity, which makes no real difference, right? The drivers are pretty much "symmetrical" aren't they?
    Last edited: Apr 19, 2019
  6. Slater
    If the earphone has a crossover, it does matter. The crossover components (such as capacitors) can be permanently destroyed by reversing + and —.

    I’ve never personally had it happen to me, but I talked to a guy who knew the owner of a CIEM shop who did have 2-pin CIEMs returned because of destroyed crossover components. The reason? Plugging it in backwards.

    Obviously, it’s not an issue with mmcx.
    Last edited: Apr 19, 2019
    BadReligionPunk likes this.
  7. candlejack
    Then probably my understanding is lacking here (never was much of an electrical/electronics engineer). Because the way I see it, it's not that + signal is always greater than -, but that - is "ground", so a stable reference, while + is an oscillating signal that goes above and below the value of -. In the graph of a sine wave, the x axis would be the -, and the sine curve itself would be the +.

    Did a quick google search and capacitors can be symmetrical or asymmetrical, but when using asymmetrical capacitors I would imagine there are some diodes or something that ensure the correct polarity at that point in the electrical circuit.

    So you and I cannot be correct at the same time. If you are right, then what am I missing?
  8. geagle
    @Slater @candlejack I'm even less of a electrical guy than Candlejack, myself - I plug things in, they work (or not :)) - that's about it for me:), but on the IMR R1 thread there was a long discussion about the first batch of R1 Zeniths having some problems with the right piece being wired reversed. This led, in turn, to a situation in which, when ordinary 2-pin wires were being plugged in normally, the IEMs were out of phase, and this was audible, while if you reversed the right wire (only), things were fine (as it matched the the wiring of the right piece) - you can test that online, for instance here: https://www.audiocheck.net/audiotests_polaritycheck.php .

    So I imagine that crossover destruction is not the only one problem you can get (though maybe the only permanent one?), by reversing polarity.
  9. Slater
    Well, I am not an EE either (just a hobbyist), so I am certainly no expert on the subject.

    But I do know that it all depends on how the particular manufacturer designs the crossover circuit, what exact type of components (such as capacitors) are used, etc.

    I have personally never seen an IEM crossover with a diode. That would be a great way to add protection to the circuit though. I suspect they’re not used because they must add some sort of unwanted characteristic (perhaps affecting the sound in some negative way).

    Also, some capacitors are more forgiving than others. Tantalum capacitors (the kind used in most IEM crossovers) are, I believe, particularly sensitive to reverse polarity. Some go into a degraded state that they can recover from, similar to a circuit breaker tripping. Others can actually blow open like a fuse, and be permanently damaged. In the case of the CIEM manufacturer I mentioned, that is apparently what happened and they sounded extremely bad. They had to be sent back to the manufacturer for replacement of the damaged components.

    Also, from the research I did previously when looking into this exact topic, I seem to remember one of the defining differences when considering the capacitor damage risk was the fact that audio voltages use AC not DC. I don’t remember the exact specifics of why that mattered, but the articles I found on the topic had an explanation that made perfect sense at the time.

    Before that, I never really cared too much about it because I never seemed to have any problems. But ever since reading that information, I am anal about determining the correct polarity of cables and IEMs before I even use them for the 1st time. So much so that I usually engrave a very small dot or mark (to indicate +) on the cable and IEM itself so I don’t screw it up down the road. Since doing that, it makes it idiot proof and easy to keep it all straight, especially since I’m always swapping around aftermarket cables a lot.

    If you search Google for capacitor polarity and tantalum capacitor information, there was quite a bit of information on the topic and I’m sure you’ll run into many of the same resources I found.
    Last edited: Apr 19, 2019
    perfecious likes this.
  10. Slater
    So that audiocheck thing is actually testing phase, which is different from polarity.

    I know the terms are sometimes used interchangeably in the audio world, and even that site uses it wrong. But they are 2 different things.

    Phase would be when 1 of the 2 speakers are wired opposite of one another. In other words, if your left side had the + pin of the cable plugged into the - of the IEM socket. And the Right side was correctly plugged in (ie + pin of the cable plugged into the + of the IEM socket).

    Reverse polarity would be both plugged in backwards. In that case you could be in phase but your have reverse polarity.

    So basically you always want to be in phase and have correct polarity.

    If you are out of phase, then at least 1 side has reverse polarity.

    I will also mention that polarity does not matter on single dynamic driver IEMs as long as they are wired in phase with one another. It’s only when you have multi-driver IEMs when it is important to ensure correct polarity.
    Last edited: Apr 19, 2019
    geagle likes this.
  11. hakuzen
    blue mark was negative signal (balanced) / ground (single end) in every unit of that kind of cable i purchased (nicehck 16 cores copper, 16 cores spc, 8 cores copper, 8 cores spc).
    but @superuser1 unit is different (blue mark is +).
    so better use your multimeter to ensure polarity of yours.
    superuser1 likes this.
  12. PhonoPhi
    I am not sure if it will help or will add to more confusion: on my preformed similar cables - the blue dot is outside (away from the nozzle). It is actually a rounded side in my KZ AS10, & CCAs C10 & C16.
  13. bk123
    I have the black 16 core spc of NiceHck and the blue dot is found negative when I got it multi-meter tested.
    hakuzen likes this.
  14. BadReligionPunk
    So whats up with the red pins? The red pins suggest +, but the red pins on both sides are on the same side as the blue marks. Clearly you can see even on their stock photos, so I am assuming all of them are exactly the same.

    Weird. Seems like they need instructions or Im overthinking it too much. Unfortunately my Multimeter is one of those free ones from harbor freight, and I have no idea how to test this. there is no beep/continuity and don't know what else to do. Checking resistance doesn't give me anything either.
  15. assassin10000

    Put it on 200ohm (in the green section on bottom/left). See what the leads are by themselves and then check if any different to each side of the connectors. Or if it doesnt register, then you know no continuity.
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