[dta116]

I wonder if a better way to match impedance with different headphones attached to a Meta42 would be to have a custom inline adapter for each headphone instead of installing seperate jacks on the amp. The problem is I am not sure what RC (serial or Parallel) to use in each adapter.
My current Headphones are:
Senn 580 - 300 ohm
Grado 225 - 32 ohm
Beyer 770 pro - 250 ohm

(be nice to be able to determine input and ouptut impedances by measurment or calculations, but that's another thread.)

Any Help here?

 

[puppyslugg]

Another possibilty may be to use a switch to choose the output impedence. Take a look at the Corda's output:

http://headwize2.powerpill.org/proje...=meier_prj.htm

 

[dta116]

Did not see a switched output, only saw dual jacks. Are there any other suggestions to help me configure adapters for the outputs as the front panel space is at a premium on my project.

 

[puppyslugg]

dta116:

I think you should be able to use a similar configuraton as the Corda, minus the jacks, run the outputs thru a switch, to a jack. You should be able then to select which output(impedence), to use.

 

[dta116]

I would still prefer to use adapters on the end of the headphones, is there some way to determine which RC network to use with each one?