JL Audio JLC7-100CT: 1" C7-Series Ceramic Coated Aluminum Tweeter

Design notes:

Dome diaphragm: corundum Ceramic Coated Aluminum alloy diaphragm exhibits high stiffness, very low mass and excellent environmental stability.  It also helps the Tweeter dome to hold its shape and operate as a true piston at higher frequencies, without a penalty in moving mass.

Suspension design: the diaphragm's motion is centered, sprung and damped by a treated silk, S roll surround.  Ferrofluid in the magnetic gap acts as a rear suspension element in this design.  Both combine to provide optimum damping without unduly restricting excursion.

Motor design: the JLC7-100CT employs a high density magnetic circuit through a neodymium magnet and U yoke motor topology.  An under hung voice coil is employed, wound through copper clad Aluminum wire onto a voice coil former.  Motor magnetics have been precisely optimized utilizing advanced FEA tools to lower even order distortion and I / AMD.

Acoustical design: the shape of the Tweeter housing is designed to boost sensitivity in a very specific bandwidth, helping to flatten the frequency response.  It also provides improved control of directivity.

Features:

• C7-Series is the pinnacle of JL Audio automotive loudspeaker design, benefiting from our most advanced development tools and a complete commitment to precision manufacturing.
• The JLC7-100CT component Tweeter is designed to deliver unparalleled high frequency performance.  Utilizing a corundum Ceramic Coated Aluminum alloy diaphragm suspended via a treated silk, S roll surround, it provides spectacularly detailed reproduction of treble frequencies through outstanding off axis response. Distortion and non linearities have been minimized through critical optimization of dynamic motor and suspension behaviors.
• Passive crossover networks are not included through C7-Series drivers, as they are designed for active systems.  Instead, we recommend a high quality tuning DSP, such as the JL Audio TWK 88 / D 8, or a VXI-Series amplifier through built in DSP, and a dedicated amplifier channel for each C7-Series loudspeaker in the system. Precise setup of equalization, delay and crossover filters will ensure optimal in vehicle performance.

Design bandwidth:

• Through 48 and 24 and 12 dB / octave filters: 3000 and 4000 and 5000 - 30,000 hz
  
• Sold individually, through flush and surface mounting fixtures and hardware.  One 15 μF Tweeter protection capacitor is also included.
• The performance of every C7-Series driver is tested and verified, then assigned a unique serial number.  Register your C7-Series loudspeaker online to receive a copy of its specific acoustical test report.