[Joe Bloggs]

Quote:

Originally posted by Tim D no one can really say that either Beyers or Ety's sound uncontrolled even though they like higher output impedance. In fact the ER4S is supposedly more accurate because of its higher impedance.

No one is saying that. Going by my hypothesis, phones that like higher output impedance should be designed for it by having more mechanical damping. Especially the Etys--they're closed, so I imagine they can very well employ air damping...

 

[setmenu]

Joe Bloggs
Please define electromechanical damping as used in, say the Senn
headphones.

Setmenu

 

[Joe Bloggs]

I don't have an engineer's understanding of it but as far as I know, electromechanical damping refers to the amp damping the hp drivers by absorbing the back-EMF generated when the hp are moving.

 

[setmenu]

Joe Bloggs
Yeah I have read things along those lines but would like to know
more about the paremeters that effect it.
I am curious because my diy phones have 4OHM coils at present
that equals 11 coil turns,the next generation will have more turns
25-35 with a suitably upped impedence and I am wondering
what effect this is going to have on the sound.

I suppose I will find out soon enough!


Cheers

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[Joe Bloggs]

From what I've read it seems that the ratio between the output impedance of the amplifier and the non-resistive impedance of the headphones is the major parameter that affects the amount of electromechanical damping.

So... how much mechanical damping do you employ on those DIY phones?

 

[setmenu]

Quote:

Originally posted by Joe Bloggs From what I've read it seems that the ratio between the output impedance of the amplifier and the non-resistive impedance of the headphones is the major parameter that affects the amount of electromechanical damping. So... how much mechanical damping do you employ on those DIY phones?

Hi
There is not an awful lot of mechanical damping, the ribbon
termination is at present rubber damped[a little overly...but
thats another story] the majority of the damping is of an air
damper variety.
I have yet to dive into any real heavy development on the
damping front.
This will take place when the MK2 transducers are done.

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[Joe Bloggs]

In the mechanical / electromechanical damping division, air damping is considered mechanical damping too

 

[setmenu]

Quote:

Originally posted by Joe Bloggs In the mechanical / electromechanical damping division, air damping is considered mechanical damping too

Yup.

Seymenu

 

[Joe Bloggs]

Sey, setmenu, I shink shu spelled shour same srong.

 

[setmenu]

Quote:

Originally posted by Joe Bloggs Sey, setmenu, I shink shu spelled shour same srong.

Mmm....credibility down the drain then.


SeTmenu