Bill Fagal
Stunt Coordinator
- Joined
- Jul 8, 2002
- Messages
- 166
Board seems kind of dead, so I thought I'd have some fun with a little speculation.
Anyone besides me still intrigued with Adire's XBL2 technology? Now that XBL2 drivers have been shipping for some time, they won't mind if we indulge in a little reverse engineering, will they?
So for the sake of public edification, anyone willing to take their Brahma/Tumult down to their local metalshop and bandsaw the motor in half so we can see a cross section? Didn't think so.
Well, short of that, here's a sketch of my guess at the innards of a Tumult XBL2 motor. The brilliance of this topology is how the voice coil traverses between two gaps, with special attention paid to keeping the fringing fields symmetrical and the VC winding hight optimized for a constant BL over the transition.
http://image1ex.villagephotos.com/pu...sp?id_=2297319
Any thoughts?
If I have some time over lunch, I'll try to do a quick finite element model of the field density distribution and post it.
Bill
(Edit: Switched to a link to save bandwidth.)
Anyone besides me still intrigued with Adire's XBL2 technology? Now that XBL2 drivers have been shipping for some time, they won't mind if we indulge in a little reverse engineering, will they?
So for the sake of public edification, anyone willing to take their Brahma/Tumult down to their local metalshop and bandsaw the motor in half so we can see a cross section? Didn't think so.
Well, short of that, here's a sketch of my guess at the innards of a Tumult XBL2 motor. The brilliance of this topology is how the voice coil traverses between two gaps, with special attention paid to keeping the fringing fields symmetrical and the VC winding hight optimized for a constant BL over the transition.
http://image1ex.villagephotos.com/pu...sp?id_=2297319
Any thoughts?
If I have some time over lunch, I'll try to do a quick finite element model of the field density distribution and post it.
Bill
(Edit: Switched to a link to save bandwidth.)