[Boognish]

Definetly something to watch out for, I have also read about some users getting small shocks from the right side of the phone too. Another post on here about someone having 2 sets of UM1 die.

http://www6.head-fi.org/forums/showthread.php?t=157686

 

[Dimitris]

Now theres something to make me feel a bit better for my 3G Ipod. I wonder if it will happen through the line out as well.

 

[swmtnbiker]

The sky is falling! The sky is falling!

There is no EMPIRICAL evidence that the iPod is causing headphone/earphone failure. All we have is a bunch of ANECDOTAL evidence from iLounge that MIGHT indicate something's wrong. Until there's more concrete information and some hard data showing conclusively that an issue exists, I say keep your pants on. Or as Douglas Adams would say, "Don't panic!"

 

[allenf]

Bizarre.
99% of people who post in a "My iPod blew it's right earbud thread" report that their iPod blew their right earbud.
<scratches head>

 

[Weeman]

Quote:

Originally Posted by ManMower Interesting. I'm thinking it's time someone gets out a multimeter or an oscope and checks for DC offset or high powered sub/superaudible tones.

If I had one, or knew what that was, I would. Someone, please find out the source of this. Apple sure won't.

Weeman, wannabe-audiophile

 

[sgrossklass]

Parallel universe, err, thread in Portable Audio:
http://www6.head-fi.org/forums/showthread.php?t=158979
Quote:

Originally Posted by Weeman Quote: Originally Posted by ManMower Interesting. I'm thinking it's time someone gets out a multimeter or an oscope and checks for DC offset or high powered sub/superaudible tones. If I had one, or knew what that was, I would. Someone, please find out the source of this. Apple sure won't.

DC offset: With silence being played, the voltage from R and L to ground should be equally zero. If there is some constant voltage present, that's a DC offset.
Sub/superaudible tones: tones with frequencies below and above the audible range, respectively.

 

[Weeman]

And either DC offset or sub/superaudible tones will blow a headphone driver?

 

[wnewport]

Quote:

Originally Posted by sgrossklass Parallel universe, err, thread in Portable Audio: http://www6.head-fi.org/forums/showthread.php?t=158979 DC offset: With silence being played, the voltage from R and L to ground should be equally zero. If there is some constant voltage present, that's a DC offset. Sub/superaudible tones: tones with frequencies below and above the audible range, respectively.

I've never used my buds and I have zero problems, guess I am lucky. I was one of the first ones to get the new 5g, so I wonder if it is a more recent problem with the newer ones.

 

[The Monkey]

Quote:

Originally Posted by Weeman And either DC offset or sub/superaudible tones will blow a headphone driver?

Yes: http://www.tangentsoft.net/audio/input-cap.html

 

[leftshoe]

ok. I've got a 5th gen ipod and a multimeter. Its time somebody tested the DC offset.

Looks like my 30gig model has a DC offset of 0.002-0.001V with no music playing. Thats less then my cmoy, so I figure I'm safe. I've got a cheap multimeter, so it could be less then that.
It could just be certain defective ipods that have high offset.

 

[Jasper994]

Hmmm guess I'll be having Edwood test mine the next time I visit him. It would really suck if it blew my UE-10s!!!

 

[m_memmory]

Quote:

Originally Posted by Jasper994 Hmmm guess I'll be having Edwood test mine the next time I visit him. It would really suck if it blew my UE-10s!!!

If my DAP blew a set of UE-10s I'd be so screw*** p****** that I reckon I'd be up for any kind of vengence going!! I can't even begin to think about affording something like that yet I already realise what they must sound like, and even the thought of something like that being destroyed is just sacruligeous!!

 

[Ploop]

just another reason not to buy the iPod.

Their are other choices you know. Creative Vision:M Toshiba Gigabeat S (those are the ones with video). Plus the iAudio X5, Zen Sleek (or Photo).

The 5G iPod sounds nice (yall probably have amps) but what the point of buying a portable player when you need to get a dock to even use it safely.

 

[sxr71]

Anyone who uses the headphone out of their iPods should test for DC offset.

Just take any old mini-mini cable and two wires connected to a sensitive LED (a dollar at Radio Shack) and bare on the other side. Connect one end of the mini to mini cable to the headphone out of the iPod play music at maximum volume.

Touch the bare end of one those wires to the long metal section closest to the base of the exposed plug and the other wire to the middle metal section and then change that wire to the end metal section of the plug.

Then you have to have switch the wires such that the wire you used on the two outer sections of the plug is now touched to the long metal section closest to the base of the plug and the other wire is now tested on the two smaller metal sections. If you see the LED light up at any time during the four combinations you tested you have a problem.

I wish I could draw it out and I hope you understand how to do it or that someone else explains it better than I can. I urge you test out your iPod it's pretty simple.

 

[papakoks]

this is disturbing really....but looks like it only happens to a selected few...as for me, ive had the 5g ipod for about 3 months now, and unfortunately, the stock earbuds did have a problem with the right earpiece, and had apple replace it...then after that, been using the UM2 (unamped) for 2 months...but i have not had any problem with the UM2 before i switched to lineout...