Knowles balanced armature speakers - TWFK/WBFK Series

TWFK Series:

The world’s smallest dual balanced armature speaker, the TWFK is designed for pro-audio in-ear applications.
Enables customized cross-over systems to achieve target frequency response in a package size smaller than the ED Series.

• • • Single sound port for simplified earphone design
    • Extreme wideband frequency response
    • Unique woofer/tweeter combination
    • Enables leading-edge earphone designs for miniature size and performance

WBFK Series:

Same package size as FK Series, WBFK has extended high frequency response.
It is recommended as a high frequency component to be combined with low/midrange speaker for music earphones.

• • • Lower low/mid-band sensitivity compared to FK Series
    • Best high frequency response of any Knowles element
    • Combine with low/mid-range speaker for extended frequency response
    • TWFK pairs WBFK with low frequency FK