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Open back HD25sp conversion

post #1 of 8
5/26/11 at 9:37am
Thread Starter 

Just a bit of fun... I have converted this old pair of HD25sp to open backs, fitted velour pads and re-cabled them. They sound much more open and airy with more detail.

 

Open backed HD25

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post #2 of 8
6/10/11 at 12:24pm

It is indeed weird that a headphone designed to be close works good open. where did you get the back of the cups?

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post #3 of 8
6/10/11 at 12:32pm
Thread Starter 
Quote:
Originally Posted by JamesMcProgger View Post

It is indeed weird that a headphone designed to be close works good open. where did you get the back of the cups?



I Just popped the covers off the capsules... That is how they look underneath 

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post #4 of 8
6/10/11 at 12:37pm

Very cool mod!

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post #5 of 8
6/10/11 at 12:45pm
Quote:
Originally Posted by jfunk View Post





I Just popped the covers off the capsules... That is how they look underneath 



did the plastic cups had any sort of damping material inside, or was it solid plastic?

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post #6 of 8
6/10/11 at 12:49pm
Thread Starter 
Quote:
Originally Posted by JamesMcProgger View Post





did the plastic cups had any sort of damping material inside, or was it solid plastic?


Yeh... They have a disk of felt type sound absorbing material in them

Inside the HD25

 

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post #7 of 8
6/10/11 at 7:03pm
Perhaps try removing the felt or replacing it with something that's more open?
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post #8 of 8
6/10/11 at 11:34pm
Thread Starter 
Quote:
Originally Posted by cyberspyder View Post

Perhaps try removing the felt or replacing it with something that's more open?


Yep. Not a bad idea... These were just a but of fun, made up of bits I had knocking around and some second hand SPs I picked up on the bay to test vs the HD25-1 and HD25-13. All the headphones I had were closed backed so I thought I would try this to get that open back feel without having to fork out an money.

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