JL Audio SXE-C1-400x 4 Inch (100mm) Coaxial Car Speakers | 2-Way | 105 Watts

Upgrade your car audio with the JL Audio C1-400x 4″ Coaxial Car Speaker System, a premium entry-level speaker pair from JL Audio’s renowned C1 Series. Engineered with advanced materials and design, these coaxial speakers deliver surprisingly rich and detailed sound that far exceeds typical factory replacements.

At the heart of the C1-400x system is a mineral-filled injection-molded polypropylene woofer suspended on a durable rubber surround, delivering smooth low and midrange sound with reliability and reduced distortion. Coupled with an aluminium edge-driven dome tweeter, these speakers produce crisp, clear high frequencies with excellent off-axis response — bringing out nuance and depth in vocals and instruments.

The speakers drop into most standard 4″ mounting locations behind factory grilles. Breakaway mounting tabs allow for flexibility in four-hole or two-hole mounting configurations. Whether you’re replacing worn factory speakers or building a quality upgrade on a budget, the C1-400x pair enhances your vehicle’s soundstage with balanced, distortion-controlled audio that makes every drive more enjoyable.

Superior Sound Quality

The C1-400X speakers feature a 4-inch (100 mm) woofer with a mineral-filled, injection-moulded polypropylene cone and a rubber surround, ensuring smooth, dynamic sound with exceptional low-frequency response. Paired with a 0.75-inch (19 mm) aluminium dome tweeter, these JL Audio speakers provide superior high-frequency clarity and definition, allowing you to hear every detail in your music.

Easy Installation

Designed for seamless integration, the C1-400X speakers are perfect for replacing original 4" speakers or fitting in custom enclosures. With a mounting depth of 1.81 inches (46 mm) and a mounting hole diameter of 3.70 inches (94 mm), these speakers are compatible with a wide range of vehicles, making installation straightforward and hassle-free.

Durable Construction

Built to last, the C1-400X speakers feature a proprietary, stamped steel frame and a DMA-optimized motor system, ensuring durability and consistent performance. The carefully engineered spider at the top of the voice coil precisely controls motion, preventing impact between the voice coil and the back plate, while the tinsel leads are routed and attached to prevent fatigue and buzzing.

Why Choose JL Audio C1-400X?

As the authorized UK distributor of JL Audio, InCarTec offers genuine products that provide excellent sound quality and durability. Whether you're upgrading your car audio system or replacing factory car speakers, the C1-400X speakers are the perfect solution for those who want high-quality sound without breaking the bank.

Specifications:

• Continuous Power Handling (RMS): 35 W

• Recommended Amplifier Power (RMS): 10 - 50 W / Ch.

• System Efficiency: 84.5 dB @ 1 W / 1 m

• System Nominal Impedance: 4 Ω

• System Frequency Response: 64 Hz - 24 KHz ± 3 dB

Physical Specifications:

• Frame Outer Diameter: 4.03 in / 102 mm

• Motor Outer Diameter: 2.33 in / 59 mm

• Frontal Coaxial Tweeter Protrusion: 0.61 in / 16 mm

• Mounting Hole Diameter: 3.70 in / 94 mm

• Mounting Depth: 1.81 in / 46 mm

  
  

  Sold as a pair. Grilles not included.

Are 10cm/ 4 inch speakers good for my vehicle?

4-inch or 10cm speakers are a compact audio solution that delivers impressive sound quality in a small package. Ideal replacements in popular smaller 3-door cars like the Vauxhall Corsa D and select Alfa Romeo, Fiat, and BMW, these lightweight speakers can easily be installed in rear doors, ensuring an unobtrusive fit. Despite their size, they produce powerful and immersive audio, making them perfect for music lovers who seek clarity without the bulk of larger equipment. Whether you're upgrading your vehicle's sound system or simply looking to reduce the size of your car audio set up, 4-inch speakers provide a remarkable audio experience that doesn’t compromise on performance.

What size speakers are in my car? 

If your unsure what speakers fit your car we would recommend using our market-leading Search By Car feature