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Is this damage or normal?

post #1 of 30
1/4/12 at 9:04am
Thread Starter 

I0uG2.jpg

Picture is the right side of a pair of Yuin PK2s. The cover kept popping out, and i noticed the right side sounded significantly softer than the left (even when i put the right earbud in my left ear). I sent it back for repair, and the seller replied saying that it is normal for the cover to be removable and that he tested the sound and it is balanced in both ears.

I'm pretty sure hes ********ting about the cover being removable because ive never had a removable cover for the PK2s in 4+ different sets....

My main question is there any way to check if a earphone is producing equal sound for both ears?

P.S. If anyone knows a way to contact the Yuin company, that would be great.


Edited by Question2 - 1/4/12 at 9:10am
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post #2 of 30
1/4/12 at 11:32am
Use a multimeter to check the resistances of each earpiece using the jack. They should both be within 10% of the specification.
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post #3 of 30
1/4/12 at 11:52am
Thread Starter 

I dont have a multimeter...but how are you supposed to use it anyway?

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post #4 of 30
1/4/12 at 12:19pm
The plug of your headphones will have 3 contacts, left, right, and ground, starting at the tip. Touching left to ground and right to ground will give you the resistance of each signal path respectively, assuming you have the multimeter set to resistance (Ohms). Touching right and left contacts together should not register a resistance since right and left channels should be separate.
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post #5 of 30
1/4/12 at 8:28pm
Thread Starter 

bump

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post #6 of 30
1/4/12 at 9:24pm

Definitely not 'normal'

 

Find a few people to do a blind test, swap the earpiece a few times (Left <-> right) and ask them if they heard any difference.

 

Yuin doesn't take call personally. All warranty is handled by dealer.

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post #7 of 30
1/5/12 at 12:04am
Thread Starter 

The earphones are still at the seller. What can i do if the seller refuses to fix it or send it back for repair?

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post #8 of 30
1/5/12 at 2:16am
Quote:
Originally Posted by Question2 View Post

The earphones are still at the seller. What can i do if the seller refuses to fix it or send it back for repair?

That depends on where / who you got the earbuds from. I don't think any legit seller will risk his name for one earbud, but you never know.
 

 

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post #9 of 30
1/5/12 at 2:41am
Thread Starter 

Its an ebay seller called deskfi. Recommended by one of the members here when i was looking for a replacement a few months ago. Problem is its been more than 45 days so i cant leave negative feedback if i wanted to, nor can i report him to ebay...so i cant really do anything if he decides to screw me ove

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post #10 of 30
1/5/12 at 9:37pm
Thread Starter 

bump,

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post #11 of 30
1/5/12 at 9:48pm

You are right since the seller has the item, there is nothing you can do if he decides to screw you.
 


Edited by ijchan223 - 1/5/12 at 9:50pm
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post #12 of 30
1/6/12 at 12:34am

Unfortunately that seems to be the case here.

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post #13 of 30
1/6/12 at 12:12pm
Thread Starter 

So...anyone knows how to contact yuin? I remember reading that they sent out samples to reviewers in the UK...so they should speak english at least...

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post #14 of 30
1/6/12 at 7:17pm
Quote:
Originally Posted by Question2 View Post

So...anyone knows how to contact yuin? I remember reading that they sent out samples to reviewers in the UK...so they should speak english at least...


Yuin is a tiny company made out of a few guys. They don't even have a website of their own right now, not even in Chinese. For all the oversea business, Head-Direct is supposed to be the only authorised distributor. But in your case, I double the seller is authorised dealer (which means warranty is pretty much out of the window). Trying to contact Yuin directly really won't help you much. You'll have to sort it out will the seller. As for those UK samples - the was an unauthorised Yuin dealer in U.K. a few years ago. It was that company that sent out the samples, not Yuin (or more correctly, Head-Direct).

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post #15 of 30
1/9/12 at 8:35am
Thread Starter 

Seller still insisting there is nothing wrong with the earphones even after i sent him the picture of the cover popping out :(. First time i got scammed by an ebay seller. And this one has high feedback rating and a 9+ years old account....

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