JL Audio C7-100ct 1″ Component Dome Tweeter – Single Tweeter

The C7-100ct represents the pinnacle of JL Audio’s automotive speaker design, crafted with precision engineering and cutting-edge technology. This high-performance component tweeter delivers exceptional high-frequency accuracy, ensuring an immersive and detailed listening experience.

Unrivaled High-Frequency Performance
Designed for active sound systems, the C7-100ct does not include passive crossover networks. Instead, JL Audio recommends using a high-quality tuning DSP, such as the TwK™ 88 or D8, along with a dedicated amplifier channel for each C7 driver. With precise tuning of equalization, delay, and crossover filters, the C7-100ct achieves optimal in-vehicle audio performance.

Advanced Engineering and Design

Premium Dome Diaphragm
Corundum ceramic-coated aluminum alloy diaphragm – Ultra-rigid, lightweight, and environmentally stable
True piston operation at high frequencies – Delivers exceptional detail without added moving mass

Optimized Suspension System
Treated silk S-roll surround – Ensures smooth, controlled movement of the diaphragm
Ferrofluid in the magnetic gap – Enhances damping while maintaining unrestricted excursion

High-Precision Motor Design
Neodymium magnet with U-Yoke motor topology – Provides a high-density magnetic circuit
Under-hung voice coil – Copper-clad aluminum wire on an aluminum former for reduced distortion
Advanced FEA-optimized magnetics – Minimizes even-order distortion, IMD, and AMD, resulting in superior clarity

Acoustic Housing and Directivity Control
Tweeter housing shape enhances sensitivity – Boosts response in a specific frequency range
Improved directivity control – Ensures consistent, balanced sound dispersion

Design Bandwidth and Frequency Response
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

Each C7 tweeter undergoes rigorous performance verification, and owners can register their unit online to receive a copy of its specific Acoustical Test Report.

Sold individually.

Specifications

General Specifications
Continuous Power Handling (RMS) 100 W
Peak Music Power 200 W
Recommended Amplifier Power (RMS) 50 – 150 W / Ch.
Nominal Impedance 4 Ω
Frequency Response 3 kHz – 30 KHz ± 3 dB

Parameters
Voice Coil Resistance (Re) 3.20 Ω
Free Air Resonance (Fs) 1450 Hz
Reference Efficiency (no) 0.267%
Efficiency 86.5 dB @ 1W / 1m
92.5 dB @ 1W / 0.5m
Sensitivity 89.5 dB @ 2.83V / 1m

Tweeter Physical Specifications
Flush Mount Fixture Diameter (A1) 2.13 in / 54 mm
Surface Mount Fixture Diameter (A2) 2.16 in / 55 mm
Flush Mount Mounting Hole Diameter (B) 1.88 in / 48 mm
Flush Mount Mounting Depth (C) 0.73 in / 19 mm
Flush Mount Tweeter Frontal Protrusion (D1) 0.33 in / 8 mm
Surface Mount Tweeter Frontal Protrusion (D2) 1.06 in / 27 mm