Head-Fi.org › Forums › Help and Getting Started › Introductions, Help and Recommendations › Reverse polarity in my HD555s
New Posts  All Forums:Forum Nav:

Reverse polarity in my HD555s

post #1 of 7
Thread Starter 

Hi,

 

I recently did some repairs on my sennheiser hd 555s and I use them now and I can hear a differense in the sound from what it was before. IT sounds like certain noises are very quiet and some sound normally. But generally the drivers are perfectly fine.

 

I also went to http://www.audiocheck.net/soundtests_headphones.php and checked the wiring section; the centred and twisted sound files sound opposite of what they should be compared to normal headphones.

 

It seems that I need to switch the polarity of my headphones, so I checked around and http://www.ehow.com/how_8498401_switch-polarity-headphones.html is the only thing I found, but it didnt work. (why?)

 

Is there anyway I can switch the polarity in my headphones? any wires to solder? help! Am I wrong in thinking that I need to switch the polarity?

 

I can post a pic of inside of my headphones if you want.

 

Thanks

post #2 of 7
Unless I am mistaken, that link to "switch polarity" is simply switching left<->right, but it isn't changing the +/- wiring, which is what I would normally think of when someone says "polarity". The "Center" and "Twisted" checks on the site you posted are checking for +/- wiring of the plug & drivers, so switching the left & right will do nothing - that's just the same as wearing the headphones backwards!

When you say you "did some repairs" - what exactly did you do? Did you do anything to the headphone plug or the headphone cable?
post #3 of 7
Thread Starter 
Quote:
Originally Posted by billybob_jcv View Post

Unless I am mistaken, that link to "switch polarity" is simply switching left<->right, but it isn't changing the +/- wiring, which is what I would normally think of when someone says "polarity". The "Center" and "Twisted" checks on the site you posted are checking for +/- wiring of the plug & drivers, so switching the left & right will do nothing - that's just the same as wearing the headphones backwards!



When you say you "did some repairs" - what exactly did you do? Did you do anything to the headphone plug or the headphone cable?

 



The cable running from between the two speakers was severed and had to be re attached together.

hd555-vs-hd595-open.jpg

If i were to un solder the two connections on the right side of the picture, then switch and re solder them, would that change the polarity?
post #4 of 7
Thread Starter 
The wire between the two speakers got severed. So I had to reconnect the wire.

http://mikebeauchamp.com/dump/hd555-vs-hd595/hd555-vs-hd595-open.jpg

you can see the 2 wires that are soldered? can i just switch those 2 to fix the polarity issue?
Edited by adawxawx - 4/9/14 at 10:10pm
post #5 of 7
Quote:
Originally Posted by adawxawx View Post

 

I also went to http://www.audiocheck.net/soundtests_headphones.php and checked the wiring section; the centred and twisted sound files sound opposite of what they should be compared to normal headphones.


Does this statement mean that left and right are switched now? If so, I wouldn't bother rewiring the headphones. Most audio players have an option to switch left and right. Just do that. Way easier. 

If you switched the + and - wires, whether or not its a problem depends on if you only did on one side of the headphones. If one driver has + and - switched and the other doesn't, that would cause audible problems. If both have + and - switched, it makes absolutely no difference at all. AKG reverses the polarity on purpose for all their headphones. 


Edited by manbear - 4/10/14 at 9:23am
post #6 of 7
Thread Starter 
So then how can i fix the issue with my headphones sounding really strange, as if the plug is only half way in?

Sorry for the double posts, for some reason the posts take hours to show up in the topic.
post #7 of 7
Thread Starter 
Well I fixed it myself, no thanks to you guys.
It turns out that switching the wires on one speaker fixed the problem.

Thanks!
New Posts  All Forums:Forum Nav:
  Return Home
Head-Fi.org › Forums › Help and Getting Started › Introductions, Help and Recommendations › Reverse polarity in my HD555s