Clutz
Tells us when we're offset.
- Joined
- Jun 7, 2002
- Posts
- 2,483
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Greetings all,
This will likely demonstrate yet again my poor understanding of electronics.
One of the standard reasons given why a Cmoy headphone amplifier does not amplify low Z cans as effectively as high Z cans is because low Z cans need lots of current and the Cmoy headphone amp increases voltage gain. Hence, if people want to power low Z cans like Grados the use of a buffer is often advised in order to provide the necessary/desired current.
Why not take a high voltage gain circuit - maybe using something like a Cmoy with 637s in it and a pretty high voltage gain, and connect it to an output transformer to decrease the voltage and increase the current. I realize there must be a good reason for doing this, but it is unclear to me what that is. For a while I thought that this must be due to the fact that transformers are adding non-linearities into the audio signal and that's a big no-no, but I recently read a post (I believe it was by Garbz) where he made a device to convert a balenced to unbalanced source (or vice versa) using transformer - which suggests that there must be another reason for not using transformers.
Thanks so much,
Cheers,
Clutz
This will likely demonstrate yet again my poor understanding of electronics.
One of the standard reasons given why a Cmoy headphone amplifier does not amplify low Z cans as effectively as high Z cans is because low Z cans need lots of current and the Cmoy headphone amp increases voltage gain. Hence, if people want to power low Z cans like Grados the use of a buffer is often advised in order to provide the necessary/desired current.
Why not take a high voltage gain circuit - maybe using something like a Cmoy with 637s in it and a pretty high voltage gain, and connect it to an output transformer to decrease the voltage and increase the current. I realize there must be a good reason for doing this, but it is unclear to me what that is. For a while I thought that this must be due to the fact that transformers are adding non-linearities into the audio signal and that's a big no-no, but I recently read a post (I believe it was by Garbz) where he made a device to convert a balenced to unbalanced source (or vice versa) using transformer - which suggests that there must be another reason for not using transformers.
Thanks so much,
Cheers,
Clutz