JL Audio C7-100ct Manuel utilisateur

OWNER’S MANUAL

1-inch (25 mm) Component Tweeter

DESIGN & TECHNOLOGIES

Dome Diaphragm:

Corundum ceramic-coated aluminum alloy

diaphragm exhibits high stiffness, very low mass

and excellent environmental stability.

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 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:

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.

100

OOhhmmss

ddBB

40 kHz30 kHz20 kHz5 kHz3 kHz 10 kHz1 kHz500 Hz

0 deg.

30 deg.

45 deg.

Impedance

C7-100ct: Specifications and Crossover Setting Guidelines

C7100ct SPECIFICATIONS

Speaker Type: Component Tweeter

Nominal Diameter: 1 in. (25 mm)

Nominal Impedance (Znom): 4 ohms

Continuous Power Handling: 100W

Recommended Amplifier Power: 50-150W (RMS)

Net Weight: 0.25 lbs. (110 kg)

Parameters:

Voice Coil Resistance (Re): 3.20 ohms

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

Design Bandwidth:

With 48 dB/octave filters: 3 kHz - 30 kHz

With 24 dB/octave filters: 4 kHz - 30 kHz

With 12 dB/octave filters: 5 kHz - 30 kHz

INCLUDED COMPONENT & PARTS

• One (1) C7-100ct 1.0-inch (25 mm) tweeter

• One (1) surface-mount fixture

• One (1) flush-mount fixture

• One (1) #8 metal spring clip (for flush-mounting)

• One (1) #8 flat metal spring nut (for surface-mounting)

• One (1) M4 x 30 mm machine screw

• One (1) #8 x 1.0-inch (25 mm) sheet metal screw

• One (1) 4.7 mm male crimpable connector

• One (1) 2.8 mm male crimpable connector

• One (1) 150 µF tweeter protection capacitor

dB SPL

20 kHz10 kHz5 kHz1 kHz 2 kHz100 Hz50 Hz 200 Hz 500 Hz20 Hz

Sum

Tweeter

Woofer

dB SPL

20 kHz10 kHz5 kHz1 kHz 2 kHz100 Hz50 Hz 200 Hz 500 Hz20 Hz

Sum

Tweeter

MidrangeWoofer

C7 3-Way Speaker System

C7-650cw Woofer

Low-Pass: 24 dB/octave Linkwitz-Riley @ 400 Hz

Level Offset: 0 dB

C7-350cm Midrange

High-Pass: 24 dB/octave Linkwitz-Riley @ 480 Hz

Low-Pass: 24 dB/octave Linkwitz-Riley @ 3500 Hz

Level Offset: 0 dB

C7-100ct Tweeter

High-Pass: 24 dB/octave Linkwitz-Riley @ 4500 Hz

Level Offset: -1.0 dB

Please note: These are recommended starting points

for tuning. In-vehicle measurements should be made

to optimize the crossover for speaker placement

and vehicle acoustics.

C7 2-Way Speaker System

C7-650cw Woofer

Low-Pass: 24 dB/octave Linkwitz-Riley @ 2700 Hz

Level Offset: 0 dB

C7-100ct Tweeter

High-Pass: 24 dB/octave Linkwitz-Riley @ 4000 Hz

Level Offset: -1.0 dB

Please note: These are recommended starting points

for tuning. In-vehicle measurements should be made

to optimize the crossover for speaker placement

and vehicle acoustics.

C7-100ct: Dimensions

1.88in.

48 mm

.73 in.

19 mm

.33 in.

8 mm

2.13 in.

54 mm

2.16 in.

55 mm

1.06 in.

27 mm

C7-100ct: Installation

PROTECTION CAPACITOR

A high-quality 15μF protection capacitor is

included with the C7-100ct to guard against damage

from transient electrical pops (turn-on/off). This

capacitor is not a substitute for high-pass filtering

and must be connected in all installations. The

capacitors value has been selected so as not to

interfere with a properly set active high-pass filter.

The protection capacitor supplied with your

C7-100ct should be installed in a dry location and

as near as possible to the tweeter. Connect the

protection capacitor in-line (series) with the tweeter’s

positive (+) lead, as shown in Diagram A below. The

capacitor is bipolar and may be connected in either

direction. Make sure to insulate the capacitor’s leads

to guard from touching against any exposed metal.

Use plastic cable ties or a similar fastener to securely

mount the capacitor to avoid coming loose in the

event of a collision, sudden jolt or repeated vibrations

during normal use. Make sure that your mounting

location will not cause damage to wiring or any other

vital component of your vehicle.

TWEETER CONNECTIONS

Run the wire leads from the tweeter mounting

locations to the amplifier outputs. Then connect the

harness wire leads to the speaker/amplifier outputs

and tweeters, observing correct polarity. See

Diagram A below for details.

WARNING

It is absolutely vital that the protection capacitor

is connected, as shown in Diagram A. Failure to

connect the protection capicitor as shown will result

in damage which is NOT covered under warranty.

TWEETER INSTALLATION

C7 tweeters have been designed for surface or

flush-mounting. Before choosing a method, carefully

inspect the desired mounting location to determine

which method will work best.

Surface-Mount: uses the supplied surface-

mount fixture and requires the drilling of three

holes (two for the wires and one for the mounting

screw). This application is useful when mounting the

tweeters to a panel that has insufficient clearance

behind it for the tweeter’s magnet structure.

Flush-Mount: yields a custom-installed

appearance and requires a 1.88-inch (48 mm)

diameter hole to be cut in the vehicle panel. At least

1.75-inch (44 mm) of clearance is required behind

the tweeter mounting surface for the spring clip and

1-inch machine screw used to mount the fixture.

In limited depth applications, it may be necessary

to cut down the length of the machine screw, or to

use a shorter screw (not supplied). Hand-tighten the

machine screw until the fixture is secure, as shown

in Diagram C.

From Amplier

Tweeter

Diagram A:

Tweeter / Protection Capacitor Wiring

C7-100ct: Surface-Mount Installation

1) Remove the vehicle panel and check

to ensure that the mounting screw

will have adequate clearance.

2) Place the surface-mount fixture on the vehicle

panel at the desired mounting location and

mark the locations of the center mounting screw

hole and the approximate center of the left

and right semicircular cutouts (for the wires).

3) Using a 1/16-inch (1.5 mm) drill bit, drill a pilot hole

through the panel at the center screw location.

4) Using a 1/4-inch (6 mm) drill bit, drill a

hole for each of the tweeter’s wires at

the locations you marked in step 2.

5) Screw the surface-mount fixture to the vehicle

panel using the supplied #8 sheet metal screw

(hand-tighten) and #8 flat metal spring nut.

Feed a tweeter wire through each semicircular

cutout in the mounting fixture and the

1/4-inch holes you drilled in the panel.

6) To attach the tweeter to the fixture, observe the

indented locking slots on the outer edge of the

tweeter body and align these with the tabs visible

on the inside walls of the fixture. Slide the tweeter

into the fixture and secure by pressing down on

the tweeter and giving it a small clockwise turn.

7) Connect the tweeter’s wires to the wire leads from

the amplifier, observing correct polarity. Install

the protection capacitor as noted on page 5.

8) Re-install the vehicle panel, taking care to route the

new wiring so as not to interfere with any vehicle

mechanisms (window mechanisms, for example).

Diagram B:

Surface-Mount Fixture Installation

C7-100ct: Flush-Mount Installation

1) Remove the vehicle panel and check

the desired mounting location to ensure

that there is adequate clearance behind

the panel for the tweeter’s magnet

structure and mounting hardware.

2) Carefully cut a 1.88-inch (48 mm) diameter hole in

the vehicle panel. This will achieve a snug fit and

allow the tweeter flange to conceal the cut line.

3) Insert the flush-mount fixture from the front of the

panel and place the M4 machine screw through the

center hole of the fixture.

4) From behind the panel, thread the spring clip onto

the M4 machine screw and hand-tighten until the

fixture is secure.

5) Feed a tweeter wire through each semicircular

cutout in the fixture from the front of the panel.

6) To attach the tweeter to the fixture, observe the

indented locking slots on the outer edge of the

tweeter body and align these with the tabs visible

on the inside walls of the fixture. Slide the tweeter

into the fixture and secure by pressing down on

the tweeter and giving it a small clockwise turn.

8) Connect the tweeter’s wires to the wire leads from

the amplifier, observing correct polarity. Install the

protection capacitor as noted on page 5.

9) Re-install the vehicle panel, taking care to

route the new wiring so as not to interfere

with any vehicle mechanisms (window

mechanisms, for example).

Diagram C:

Flush-Mount Fixture Installation

Limited Warranty

C7-100ct-MAN 012518

“How we play.”, “Ahead of the Curve”, “JLAudio” and the JLAudio logo are registered trademarks of JLAudio, Inc.

“C7” and its respective logo are trademarks of JLAudio, Inc.

©2017 JLAudio, Inc. • For more detailed information please visit us online at www.jlaudio.com. Due to our policy of continuous product development, all specifications are subject to change without notice.

www.jlaudio.com

10369 North Commerce Parkway • Miramar, Florida • 33025 • USA

JL AUDIO warrants this speaker to be free of defects in materials and

workmanship for a period of one (1) year from the original date of purchase.

This warranty is not transferrable and applies only to the original purchaser

of the product from an authorized JL AUDIO dealer. Should service be necessary

under this warranty for any reason due to manufacturing defect or malfunction,

JL AUDIO will, at its discretion, repair or replace the defective product with new

or remanufactured product at no charge.

Damage caused by the following is not covered under warranty: accident,

misuse, abuse, product modification or neglect, failure to follow installation

instructions, unauthorized repair attempts, misrepresentations by the seller.

This warranty does not cover incidental or consequential damages and does not

cover the cost of removing or reinstalling the unit(s). Cosmetic damage due to

accident or normal wear and tear is not covered under warranty.

Any applicable implied warranties are limited in duration to the period of

the express warranty as provided herein beginning with the date of the original

purchase at retail, and no warranties, whether express or implied, shall apply

to this product thereafter. Some states do not allow limitations on implied

warranties, therefore these exclusions may not apply to you. This warranty gives

you specific legal rights, and you may also have other rights which vary from

state to state.

If you need service on your JL AUDIO product:

All warranty returns should be sent to JL AUDIO freight prepaid through an

authorized JL AUDIO dealer and must be accompanied by proof of purchase

(a copy of the original sales receipt). Direct returns from consumers or non-

authorized dealers will be refused unless specifically authorized by JL AUDIO

with a valid return authorization number. Warranty expiration on products

returned without proof of purchase will be determined from the manufacturing

date code. Coverage may be invalidated as this date is previous to purchase

date. Return only defective components. Non-defective items received will be

returned freight-collect. The customer is responsible for shipping charges and

insurance in sending the product to JL AUDIO. Freight damage on returns is not

covered under warranty. Always include proof of purchase (sales receipt).

For Service Information in the U.S.A. please call:

JLAudio customer service: (954) 443-1100 during

normal business hours (Eastern Time)

JLAudio, Inc

10369 North Commerce Parkway, Miramar, FL 33025

International Warranties:

Products purchased outside the United States of America are covered only by

that country’s distributor and not by JLAudio, Inc.

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