JL Audio C3-100ct tweeter.

The silk dome tweeter is prized by audiophiles for delivering realistic, non-fatiguing, high-frequency performance.
The C3 component tweeters are built with 1-inch silk dome diaphragms that deliver powerful, extended response, on and off axis.
Flush-mounting and surface-mounting fixtures are included to fit a wide variety of installation needs.
They can also be installed coaxially onto the C3 woofers using the fixtures included with the C3 Component / Coaxial Systems.
Inline 12 dB / octave high-pass filters with tweeter protectors are included with this kit.
The C3-100ct is designed to operate above 4 kHz with a minimum high-pass slope of 12 dB / octave.

Price for 2 pcs (pair).