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sennheiser HE60 use Stax 727 problem

post #1 of 9
Thread Starter 

Excuse me,does the sennheiser HE - 60 headphones cable top need add resistance when it work with stax 727 ?
Because I remember sennheiser HEV70 and stax 727 has different output voltage.
Please give me some advice.Thanks a lot!

post #2 of 9
I guess you mean they use different bias voltages. It'll be nice to series more resistance on HE-60 bias line, but it'll be fine without too.

Wachara C.
post #3 of 9

Usual practice is to put in a 4.7 megohm resistor in the bias lead.

 

As, from memory, the Senn has two bias leads and the Stax only one, the 2 Senn leads can be joined together and the resistor placed in series with the leads and the Stax plug.

post #4 of 9

The extra resistance does help the drivers perform better but it's not a necessity. 

post #5 of 9
Thread Starter 
Thank you!
post #6 of 9
Thread Starter 


If the bias is not sennheiser cable addition 4.7 megohm resistor will affect the Timbre? Or will shorten the life of the headphone?
I'm using them. Is no add 4.7 megohm resistor HE60.

post #7 of 9

It changes the charging characteristic of the diaphragm so it's a wide range of very subtle changes. Doesn't shorten the life of the drivers but I would recommend fitting a resistor. 


Edited by spritzer - 8/30/12 at 12:40pm
post #8 of 9
Thread Starter 
Quote:
Originally Posted by spritzer View Post

It changes the charging characteristic of the diaphragm so it's a wide range of very subtle changes. Doesn't shorten the life of the drivers but I would recommend fitting a resistor. 

 

Thank you!

Is there put in resistance DIY illustrate? To install in which a line?

post #9 of 9

You just install it in series with the bias line so it adds to the resistor already in the bias supply. 

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