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Broken DT770 driver after hair removal?

post #1 of 4
Thread Starter 

Hi everyone.

 

I own a pair of Beyerdynamic DT770 Pro 80 Ohm. My left driver has been rattling for a really long time at low frequencies. So I decided I would open it up and remove the hairs everyone was talking about. The driver was really hard to get out and I tried prying on the center of the driver cap(http://i.imgur.com/rdibj7C.jpg). The cap moved up a bit, but the rest of the driver didnt. Now I realise this could have damaged it. 

 

I finally got the driver out and saw all kinds of hairs (http://i.imgur.com/XGOS4FU.jpg).

 

 

I started removing the hairs carefully, but one of the hairs was stuck. It just didn't come off. Suddenly the cone deformed upwards(away from the driver) a bit as the hair broke in two. I gently tapped it back into place.

 

I tried testing the headphones, but my left driver had stopped working :(

 

Could this be because of the center cap moving  and/or the cone deformation? I was searching around and people seemed to have problems regarding poor cabling. I checked the tiny cables for the driver, but they seemed intact ( http://i.imgur.com/Pn3ct3l.jpg)

 

Can I fix this?

post #2 of 4

My guess would be that you broke the voice coil wire, which is very thin and delicate. If so, there is no way to fix that other than buying a replacement driver. 

EDIT -- I see that these wires are intact outside the driver, but you may have broken them somewhere inside. 

post #3 of 4
Thread Starter 
Quote:
Originally Posted by manbear View Post
 

My guess would be that you broke the voice coil wire, which is very thin and delicate. If so, there is no way to fix that other than buying a replacement driver. 

EDIT -- I see that these wires are intact outside the driver, but you may have broken them somewhere inside. 

Is there any way to test this? 

post #4 of 4

If you had a multimeter, you could measure across the + and - wires outside the driver. 

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