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  #1  
Old 07-15-2013, 04:25 AM
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BruceBanner BruceBanner is offline
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Default What is wrong with my XBA3?

So today i tested out my new XBA3's at work. about 2.5hrs into the day and i noticed the left channel was sounding less than good. It didn't suddenly switch from being normal sounding to less, it kinda gradually got worse over a minute or so.
At first i thought my insertion had gone faulty, so i pulled out and reinserted, nope... still no good. A little more later and i swear I almost lost all sound out of the left speaker, I had to pull the right channel out my ear just to see if there was still sound coming from the left (and there was but barely). I ensured the balance of the player was not a culprit, and i swopped the speakers (left to right, right to left) to make sure it wasn't my actual ear being weird, but the fault was replicated in my right ear with the left speaker, so it was definitely the left speaker that had issues..

I tried the usual suspect places such as the insertion of jack to player, and fiddled with wires at connection points to see if there was a loose connection, there wasn't.

This wasn't a fail like other IEMs whereby there is a short, touch the wires gently and you get sound back, let go and it cuts out etc, this wasn't like that.

The best way I can describe it was like some components inside started to deteriorate and perform quieter and quieter, like woofer switching off etc.

I immediately put my Soundmagic E10's in and everything was fine so I concluded that the XBA3's were faulty and that something had 'gone' internally in the left speaker.

This evening (several hours later) I tried them again (expecting the same result), to my surprise all channels sounded the same again.

My dad reckons a possible explanation is that if i was listening too loud for too long (and that is a strong possibility as we all know I like my music fairly loud) then the overload cut in...

Never experienced this with any other IEM before, but then again the XBA3's are a different technology to other IEMs i've owned.

So, what's going on?


Also, I was wearing the left speaker 'upside down' by wrapping the wire behind my ear and then down, would that have anything to do with it? I mention this only as i was wearing the right channel normally in my ear (not wrapped behind the ear).

Also also, why is the left cable very short and the right cable very long (where they fork in two), what purpose does this serve? (i find it annoying).

Cheers,

Bruce
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  #2  
Old 07-15-2013, 05:16 AM
Sleep mode zZ Sleep mode zZ is offline
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I remember that some had possible similar experiences with the Sony MH1c - the explanation was moisture in the driver. When it dries the sound is fine again. (The MC1c is especially susceptible to condensated moisture in cold temperatures.)
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Old 07-15-2013, 05:21 AM
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interesting, we're in winter here in oz, can go from 2 degrees to 22 in 8hrs..
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Old 07-15-2013, 08:36 AM
Sleep mode zZ Sleep mode zZ is offline
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You're not totally alone, here is one report:
http://www.head-fi.org/t/626569/are-...5#post_8707348
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Old 07-15-2013, 09:10 AM
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About the MH1 and cold temperatures:
Quote:
Originally Posted by ClieOS on Head-Fi
I mentioned this before when several member try to mod the filter, but it is worth to bring up the topic again - early MH1 has issue on moisture condensation inside the earpeice (warm body meets cold aluminium) that causes this issue. That's why they added a layer of moisture barrier (the white mesh filter) to prevent it from happening.
The XBA3 seems to have an inner housing of magnesium so maybe the same explanation is possible.
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Old 07-15-2013, 04:58 PM
Mikerman Mikerman is offline
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I had a somewhat similar experience, but longer lasting. With a nice and not-inexpensive pair of Shure in-ear phones that I really liked and used constantly, the left phone started getting softer, until it leveled out at about 1/2 the volume of the right. Everything else was fine--there just was this imbalance. I couldn't find any issue but thought it perhaps could be wax/debris inside the tip, and so cleaned them out, although there was little. It didn't help. Being stubborn, I kept on using the phones, and the situation miraculously cleared up over time (a few months)--now, everything is back to normal.

Weird. I attribute it to the nature of electronics. And my luck with them (I touch them, they break).
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Old 07-15-2013, 08:18 PM
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Well i'm keeping them for now, will see if the problem persists or was just a one off thing.
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