JL Audio 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 tweeter protection capacitor is also included.

C7-100ct Specifications

Speaker Type:

Component Tweeter Nominal Diameter: 1 in. (25 mm)

Design Bandwidth: 3 kHz - 30 kHz

Nominal Impedance (Znom): 4 ohms

Continuous Power Handling: 100W

Recommended Amplifier Power: 50-150W

Net Weight: 0.25 lbs. (110 g)

Parameters: Voice Coil Resistance (Re): 3.20 ohms

Free Air Resonance (Fs): 1450 Hz

Reference Efficiency (no): 0.267%

Efficiency @ 1W/1m: 86.5 dB SPL

Sensitivity @ 2.83V/1m: 89.5 dB SPL

C7-100ct Specifications Speaker Type: Component Tweeter Nominal Diameter: 1 in. (25 mm) Design Bandwidth: 3 kHz - 30 kHz Nominal Impedance (Znom): 4 ohms Continuous Power Handling: 100W Recommended Amplifier Power: 50-150W Net Weight: 0.25 lbs. (110 g) Parameters: Voice Coil Resistance (Re): 3.20 ohms Free Air Resonance (Fs): 1450 Hz Reference Efficiency (no): 0.267% Efficiency @ 1W/1m: 86.5 dB SPL Sensitivity @ 2.83V/1m: 89.5 dB SPL Please Note: The specifications in this document are based on pre-production testing and are subject to change once production begins.