JL Audio C7-100ct -1" (25 mm) 100W RMS Corundum Ceramic-Coated Component Tweeter

JL Audio's flagship car speaker series

C7 is the pinnacle of JL Audio automotive loudspeaker design, benefiting from our most advanced development tools and a complete commitment to precision manufacturing.

The C7-100ct 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 with 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 with C7 drivers, as they are designed for active systems. Instead, we recommend a high-quality tuning DSP, such as the JL Audio TwK™ 88 or D8, and a dedicated amplifier channel for each C7 loudspeaker in the system. Precise setup of equalization, delay and crossover filters will ensure optimal in-vehicle performance.

C7-100ct 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. The two combine to provide optimum damping without unduly restricting excursion.

Motor Design: The C7-100ct employs a high-density magnetic circuit with a neodymium magnet and U-Yoke motor topology. An under-hung voice coil is employed, wound with copper-clad aluminum wire onto an aluminum voice coil former. Motor magnetics have been precisely optimized utilizing advanced FEA tools to lower even order distortion and IMD/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.

Design Bandwidth:
With 48 dB/octave filters: 3,000 Hz - 30,000 Hz
With 24 dB/octave filters: 4,000 Hz - 30,000 Hz
With 12 dB/octave filters: 5,000 Hz - 30,000 Hz

Sold individually, with flush and surface mounting fixtures and hardware. One 15μF tweeter protection capacitor is also included.

The performance of every C7 driver is tested and verified, then assigned a unique serial number. Register your C7 loudspeaker online to receive a copy of its specific Acoustical Test Report.

In Utopia line, pure Beryllium inverted dome shape tweeter gives an unrivaled treble sound in your car.TBe tweeter has been designed for flush mounting (recommended) or surface mounting installation.

Due to its incredible rigidity, Beryllium represents the ultimate material for a tweeter dome. After two years of research and development, Focal produced a world first: a pure Beryllium inverted dome, able to cover more than five octaves. You will improve the perception of transients and other micro details. As well, the linearity of the speaker’s response curve is mainly a function of three opposite parameters: lightness, rigidity, and damping.

1" (2.5cm) Beryllium inverted Drone Tweeters

Product Features:

• 1" C7 Tweeter Component Driver
• Built in the USA with international pieces
• Specific bandwidth boosting, cavity back tweeter housing
• Underhung voice coil with aluminum former
• Power Handling:
• RMS: 100 watts
• Recommended Power Range: 50 - 150 watts RMS per channel
• Corundum ceramic coated, aluminum alloy diaphragm
• Treated silk S-roll surround with ferrofluid damped rear magnetic gap
• Neodymium magnet with custom machined U-Yoke
• Top-mount Depth: .73"
• Cutout Dimensions: 1.88"
• Flush and surface mounting fixtures and hardware included
• Tweeter protection capacitor included
• 4 ohms impedance
• Frequency Response: 300-30,000 Hz
• Sensitivity: 89.5dB
• Sold Individually
• UK Internet Dealer
• 1-year Manufacturer's Warranty
• Priced Individually