[quote author="clintrubber"]
Does all this different capsule stuff make sense ?
Could I lose the internal TX and still get 200 ?
Or doesn't it really matter much if there's still an internal TX (either in the signal path or attached to the circuit but not transforming)
Who knows more ?
[/quote]
Hi Peter,
Is that picture above from Sennheiser or Beyer? Let's not get confused!
Why does the HLM digram only have a two-position switch? My memory is going again.... Does one switch position offer two impedances depending on which pins you use?
I was working (repairing) a Sennheiser HN microphone earlier today. The 200 Ohms on them is derived straight from the capsule.
I'm not sure if I agree about Beyer using different capsules - they usually use moving-coils which are 200 Ohms and do not use transformers. Therefore, I would guess the transformer would just provide 500 Ohms and Hi-Z as a step-up. As far as I know, there is no point in removing the transformer.
You can test this theory by opening up the mic and checking continuity between each output pin and each side of the capsule coil. If there is continuity then the transformer is being bypassed.
I don't understand the wiring description in the Beyer catalogue - as far as I knew, you just changed the switch on the mic... Wait a second... :idea: ... that's why mine and Hejsan's one hummed - the earth is via the tuchel barrel. I rewired mine.
I'll need to read through this again tomnorrow - I've had a few beers.
Does all this different capsule stuff make sense ?
Could I lose the internal TX and still get 200 ?
Or doesn't it really matter much if there's still an internal TX (either in the signal path or attached to the circuit but not transforming)
Who knows more ?
[/quote]
Hi Peter,
Is that picture above from Sennheiser or Beyer? Let's not get confused!
Why does the HLM digram only have a two-position switch? My memory is going again.... Does one switch position offer two impedances depending on which pins you use?
I was working (repairing) a Sennheiser HN microphone earlier today. The 200 Ohms on them is derived straight from the capsule.
I'm not sure if I agree about Beyer using different capsules - they usually use moving-coils which are 200 Ohms and do not use transformers. Therefore, I would guess the transformer would just provide 500 Ohms and Hi-Z as a step-up. As far as I know, there is no point in removing the transformer.
You can test this theory by opening up the mic and checking continuity between each output pin and each side of the capsule coil. If there is continuity then the transformer is being bypassed.
I don't understand the wiring description in the Beyer catalogue - as far as I knew, you just changed the switch on the mic... Wait a second... :idea: ... that's why mine and Hejsan's one hummed - the earth is via the tuchel barrel. I rewired mine.
I'll need to read through this again tomnorrow - I've had a few beers.