JL Audio C7-350CM 3.5″ 3-Way Component Midrange Speaker – Each – #99758

Brand: JL Audio
Model Number: C7-350CM
UPC: 699440997584
Model Number: C7-350CM
UPC: 699440997584

JL Audio C7-350cm 3.5″ Component Midrange Car Speaker – #99758

  • 3.5″ C7 Midrange Component Driver
  • 50-150 watts RMS power handling
  • 300-10,000 Hz frequency response
  • 5 dB at 2.83 volts sensitivity
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JL Audio C7-350cm 3.5″ Component Midrange Car Speaker – #99758

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 C7-350cm component midrange is designed to operate in a 3-way system, with a woofer and tweeter. Conceived and purpose-built from the ground up, it offers exceptional transient response and outstanding linearity, resulting in unsurpassed clarity and natural mid-range reproduction. 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, or a VXi amplifier with built-in DSP, with 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.

JL Audio’s flagship car speaker series

Whoa... That’s about all I could muster after demoing JL Audio’s C7-350cm component system at their headquarters. I was floored. Track to track, moment to moment, I was astounded by the clarity and presence reproduced by these speakers. Impactful loudness, rich detail, imaging that seemed almost magical — all of it facilitated an emotional connection that rivaled live performance.

Note: The C7 Series 6-1/2″ woofer, 3-1/2″ midrange, and 1″ tweeter are all sold singly.

The voice of your system

This C7-350cm 3-1/2″ midrange driver is a powerhouse, handling frequencies from 300 to 10,000 Hz, which account for most vocals, piano, and guitar. Have no doubt — this little guy is seriously up to the task. JL Audio uses a mineral-filled polypropylene cone for excellent damping and a specially designed concave dust cap to make it a versatile player within a 3-way system. A one-of-a-kind machined motor and oversized voice coil ensure minimal distortion under any appropriate powering scenario. And with an elegant grille like no other for custom installation, this speaker will be the star of your dream system.

Make it part of an active system

The ultra-premium C7 Series has been years in the making, but its unveiling was contingent on JL Audio providing the ultimate tuning solution for optimal speaker performance — and that’s TüN, their latest audio-tuning software. Each C7-350cm speaker is sold à la carte to give you the freedom to design whatever system your ears desire. You’ll need an active crossover to use C7 speakers —  JL Audio’ recommends using their TwK™ 88 digital signal processor, which gives you access to the awesome sound-shaping power that TüN offers. The JL Audio engineers designed the C7-350cm to be neutral, without coloration, so that you can use TüN to craft exactly the right sound for you and your vehicle.

C7-350cm Design Notes:

  • Cone and Dust Cap: Vacuum-formed, mineral-filled polypropylene material offers excellent damping and low mass. The cone body features a gentle curvilinear profile to optimize response. A concave dust cap further improves high frequency behavior.
  • Suspension design: The moving assembly is suspended and damped via a linear profile spider formed from a Nomex®/polycotton blend, and a positive-roll, rubber surround. The two combine to provide optimum damping without prematurely restricting excursion.
  • Motor Design: The C7-350cm employs a high-density magnetic circuit with a high-grade, neodymium magnet, and a specially machined, U-Yoke motor topology. Motor magnetics have been precisely optimized utilizing advanced FEA tools to reduce distortion and provide linear motor force throughout the driver’s performance range.
  • A 36 mm (1.42 inch) diameter, overhung voice coil is employed, wound with copper-clad aluminum wire onto a fiberglass voice coil former. The oversized voice coil offers extended power handling capability, minimizing thermal compression and distortion at higher listening levels.

Chassis Design: A purpose-engineered cast alloy basket is employed, featuring thin spokes to maximize rear open area.

Design Bandwidth:

With 48 dB/octave filters: 300 Hz – 10 kHz
With 24 dB/octave filters: 400 Hz – 10 kHz
With 12 dB/octave filters: 500 Hz – 10 kHz

C7-350cm Dimensions

C7-350cm_Dimensions.svg
Frame Outer Diameter (A) 3.45 in / 88 mm
Bolt Hole Circle Diameter (B) 3.15 in / 80 mm
Mounting Hole Diameter (C) 2.87 in / 73 mm
Grille Tray Outer Diameter (D) 3.95 in / 100 mm
Frontal Grille Protrusion (E) 0.58 in / 15 mm
Mounting Depth (F) 1.46 in / 37 mm
Motor Outer Diameter (G) 2.36 in / 60 mm

Sold individually, with a cast-alloy grille tray, one fine mesh steel grille insert and one spiral steel grille insert.

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.

Brand JL Audio   Model JL Audio C7-350CM
Product: JL Audio C7-350CM 3.5″ 3-Way Component Midrange Speaker – Each – #99758
Specifications

Speaker Size: 3 1/2"
Design: 3-way
Impedance: 4 Ohms
Woofer Surround: Rubber
Sensitivity (1W at 1 meter): 86.5
Sensitivity at 2.83 volts: 89.5
Frequency Response: 300 – 10k Hz
Minimum RMS Wattage: 50
Maximum RMS Wattage: 100
Peak Power Handling: 200 Watts
Top-mount Depth: 1 1/2"
Bottom-mount Depth: 1 11/16"
Cutout Diameter or Length: 2 7/8"
Mounting Height: 0.244"

What's in the box

JL Audio C7-350cm owner's manual
One C7-350cm Component midrange
Trim ring
Fine mesh grille
Spiral grille
Four 1-1/4" Screws
1 Crimp-on 0.187" Female quick slide (16-14 Gauge)
1 Crimp-on 0.110" Female quick slide (16-14 Gauge)
Inspection sheet
Specs printed on the box

Speaker Design

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Speaker Sensitivity

Speaker Size

Impedance

RMS Power

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JL Audio Canada 1 Year Limited Warranty

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