JL Audio C1-400X

The C1-400X is a 4'' (10cm) coaxial speaker system, powered by the renowned manufacturer JL Audio. It is known for its high-grade audio performance and real substance. The C1-400X features a 4-inch bass-midrange driver and a 0.75-inch aluminum dome tweeter and is designed to be easily installed behind factory grilles. With cut-away mounting tabs on the woofer frame, it offers the flexibility for four-hole or two-hole mounting configurations. Special features such as the DMA-optimized motor system and the mineral-filled, injection-molded polypropylene cone make this speaker system a highlight.

• Coaxial speaker system with 4-inch (100 mm) bass-midrange driver and 0.75-inch (19 mm) aluminum dome tweeter
  
• The C1 speakers deliver real substance and great audio performance in a format designed to be easily fitted behind factory grilles.
  
• For ease of installation, cut-away mounting tabs on the woofer frame allow the C1-400x to be installed in four-hole or two-hole mounting configurations.
  
• The C1 woofer drivers benefit from JL Audio's proprietary FEA modeling and expertise in woofer development. This knowledge is used to develop speakers that can play loud while maintaining a smooth, dynamic, low-distortion sound.
• At the heart of the C1-400x is a proprietary 4-inch (100mm) stamped steel frame and a DMA-optimized motor system. A mineral-filled, injection-molded polypropylene cone is suspended with a rubber surround at the front and a carefully engineered spider at the top of the voice coil to precisely control movement and prevent shock between the voice coil and backplate.
• These are the same features and materials normally found in much more expensive speakers.
  
• Equipped with a true edge-driven aluminum dome tweeter, the C1 speakers further set themselves apart from other speakers in their category with their superior clarity and definition in the high frequency range.
• The tweeter design has inherently excellent off-axis response and high frequency extension. It also benefits from the damping of a silk surround suspension and ferrofluid in the voice coil gap, as well as the superior strength of a neodymium magnetic circuit. A true 2nd order high-pass filter is used to further increase smoothness and improve power handling.
  
• When it comes to value, C1 is the real deal!
  
• Sold as a pair. Grille not available.

• Continuous load capacity (RMS) : 35 W
  
• Recommended amplifier power (RMS) : 10 - 50 W / Ch.
  
• System efficiency : 84.5 dB at 1 W / 1 m
  
• Nominal system impedance : 4 Ω
  
• System frequency response : 64 Hz - 24 KHz ± 3 dB

• Outer frame diameter (A) : 4.03 inch / 102 mm
  
• Outer diameter of the mesh cable tray (B) : N/A
  
• Motor outer diameter (C) : 2.33 inch / 59 mm
  
• Front coaxial tweeter projection (D) : 16 mm (0.61 inch)
  
• Protrusion of the front grille (E) : N/A
  
• Diameter of the mounting hole (F) : 94 mm / 3.70 inch
  
• Installation depth (G): 46 mm (1.81 inch)