Audio IEM Design IEMs Knowledge

Balanced Armature Drivers Like You’ve Never Seen Them Before!

Growing up, I was always inspired by the awesome-looking cutaway diagrams in magazines like Popular Mechanics, so I decided to try my own hand at doing something similar…

So, I took the wire frame models used by Knowles Electronics to design their balanced armature components and pictorially enhanced them for your viewing pleasure. See the internal structure of the drivers used to power your favorite IEMs in 3D splendor!

First, it’s everyone’s favorite dual receiver the TWFK — it’s one of the most complex drivers that Knowles has ever produced, and you can definitely tell just by looking at the wire frame!

Knowles Electronics TWFK-30017 separated into FK and WBFK portions by false color
Knowles Electronics TWFK-30017 in false color 3D

Then, it’s a seldom used driver, the WBHC. I often wonder why manufacturers don’t use this driver more, but regardless, I think it looks mighty pretty in our false color renders!

Knowles Electronics WBHC-23910 in false color 3D

Note: All pictures were generated via readily downloadable 3D models from Knowles Electronics’ website (


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