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DESIGN & TECHNOLOGIES
Dome Diaphragm:
1
Corundum ceramic-coated aluminum alloy
diaphragm exhibits high stiffness, very low mass
and excellent environmental stability.
Suspension Design:
2
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:
3
The C7-100ct employs a high-density magnetic
circuit with a high-grade, neodymium
magnet, and a specially machined, 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:
4
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 control of directivity.
C7-100ct: 1-inch (25 mm) Component Tweeter
INTRODUCTION
Thank you for choosing JL Audio C7 loudspeakers
for your automotive sound system. C7 is the
pinnacle of JL Audio loudspeaker design, benefitting
from patented technologies and our most advanced
development tools.
The C7-100ct is a component tweeter designed to
deliver unparalleled high-frequency performance.
Utilizing a corundum ceramic-coated aluminum
alloy diaphragm with a treated silk, s-roll surround,
it provides spectacularly detailed reproduction
of treble frequencies and outstanding off-axis
response. Distortion and non-linearities have been
minimized through critical optimization of dynamic
motor, diaphragm and suspension behaviors.
Flush and surface mounting fixtures are included
to fit a variety of installation applications, as well as a
15μF protection capacitor to guard against damage
from transient electrical pops (turn-on/off). This
capacitor is not a substitute for high-pass filtering,
but must be connected in all installations.
We do not recommend the use of passive
crossover networks with C7 loudspeakers. Instead,
we recommend a high-quality tuning DSP 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.
Should you have any questions regarding the
instructions in this manual, please contact your
authorized JL Audio dealer for assistance, or contact
the JL Audio Technical Support Department.
