mashuto
Headphoneus Supremus
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- Sep 23, 2016
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Yes it's really important to keep the phone away from the cable or jack of these sensitive IEM's otherwise you will pick up noise. Essentially the cable acts like a massive antenna.
On Poly the same applies that if the IEM cable runs close to the black plastic antenna window then it can pick up noise.
I should add that this only happens on a few of the really sensitive IEMs.
Originally IEM's were designed for stage and live sound use where the receiver packs/amplifiers are low power and the extra sensitivity was required to get enough gain so the artist could actually hear the foldback track over the PA on stage. The downside to this high sensitivity is that it can reveal induced noise from high power radio transmitters built into products such as mobile phones. Hopefully this will help to explain why this is happening.
This all makes sense, but the noise I hear happens regardless of whether the phone is close to the poly or farther away, and regardless of whether the IEM cable is next to the antenna window or not (though worse when right next to it). From my laymens understanding of whats going on, the noise is being generated (or at least transmitted) by the wifi radio on the poly and then send directly to the mojo, so no amount of fiddling seems to reduce it, since its internal at that point. Maybe internal shielding could have helped... maybe not. And I should mention that using the same IEMs on my phone I hear no radio interference noise.
So, it seems at this point that there is nothing wrong with my mojo or poly, and that they just dont play as nicely with sensitive IEMs. I really wouldnt be making as big a deal over this, but at the price point, I dont think its too much of an ask to not have that interference. As I mentioned its annoying enough to me that I barely use it anymore. So, if there really is nothing to be done about this and thats just the way the mojo and poly are, it might be time for me to move on from them, as much as I love the sound the rest of the time.
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