spritzer
Member of the Trade: Mjölnir Audio
- Joined
- Aug 22, 2002
- Posts
- 10,055
- Likes
- 191
Sure looks like it. That opens up a whole can of worms though...
Originally Posted by Kabeer /img/forum/go_quote.gif Has anyone seen these Electrostatic headphones? NordicNeuroLab - Making fMRI easy Seem rather interesting |
Originally Posted by edstrelow /img/forum/go_quote.gif Maybe there is some advantage in these medical applications in using non- magnetic drivers. For whatever its worth these are "FDA approved." |
Originally Posted by Beefy /img/forum/go_quote.gif No, it probably just means that they went to the effort of having them certified for the application. Medical device certification is a very difficult but lucrative process. |
Originally Posted by edstrelow /img/forum/go_quote.gif Since the "M" in "fMRI" refers to magnetic, I suspect that you could have problems placing magnetic drivers inside the magnetic field of an MRI machine. Maybe thats why they went electrostatic. |
Originally Posted by les_garten /img/forum/go_quote.gif Are the Stax drivers non Ferrous? |
Originally Posted by spritzer /img/forum/go_quote.gif All normal bias cans prior to the 1977 SR-Sigma used a 200V bias and the SRD units had 200V bias supplies. There was no harm in switching to 230V though, it just makes the phones a bit more efficient. |