JL Audio C7-350CM

Beschreibung

The  C7-350CM is a 3" (8cm) midrange speaker from renowned manufacturer JL Audio. This state-of-the-art midrange speaker stands out for its exceptional transient response and excellent linearity. At the heart of the design is JL Audio's commitment to precision manufacturing and advanced development tools. The C7-350CM is specifically designed for use in a 3-way system and is ideal for active applications. With its diverse bandwidth and robust yet lightweight construction, the C7-350CM sets new standards in the clarity and natural reproduction of midrange tones. Note that the C7-350CM does not come with a passive crossover and a tuning DSP is recommended for optimal operation. More precise tuning to your vehicle is ensured by precise tuning parameters. The performance of this midrange speaker is tested and verified, ensuring optimal performance. As a premium audio enthusiast, you look for these details for high-quality sound. The C7-350CM offers just that.

characteristics

• 90 mm (3.5 inch) component midrange driver, with grille
  
• C7 is the pinnacle of JL Audio's car speaker design, benefiting from JL's most advanced development tools and full commitment to precision manufacturing.
  
• Designed to operate in a 3-way system with a woofer and a tweeter, the C7-350cm component midrange driver has been redesigned and engineered from the ground up to provide exceptional transient response and linearity, resulting in unmatched clarity and natural midrange reproduction.
• Distortions and nonlinearities were minimized by optimizing the dynamic engine and suspension behavior.
  
• Passive crossovers are not included with the C7 drivers as they are designed for active systems. Instead, JL recommends 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 speaker in the system. Precise adjustment of equalization, delay and crossover filters ensures optimum performance in the vehicle.
  
• C7-350cm Construction Notes:
  
• Cone and dust cap: Vacuum-formed, mineral-filled polypropylene material provides excellent damping and low mass. The cone body has a gently curved profile to optimize response. A concave dust cap further improves high frequency response.
  
• Suspension design: The moving assembly is suspended and damped by a linear profile gear ring made of a Nomex® /poly-cotton blend and a positive roller rubber surround. Both together ensure optimal damping without prematurely restricting the deflection.
  
• Motor Design: The C7-350cm uses a high-density magnetic circuit with a high-quality neodymium magnet and a specially machined U-Yoke motor topology. The motor magnets have been precisely optimized using advanced FEA tools to reduce distortion and ensure linear motor force across the entire driver power range.
  
• It uses a 36 mm (1.42 in.) diameter voice coil wound with copper-clad aluminum wire on a fiberglass voice coil former. The oversized voice coil provides extended power handling and minimizes thermal compression and distortion at higher listening levels.
  
• Chassis Construction: A specially designed cast alloy basket is used, featuring thin spokes to maximize the rear open area.
• 48 dB/octave filtering: 300 Hz - 10 kHz
  
• 24dB/Octave Filter: 400Hz - 10kHz
  
• 12 dB/octave filter: 500 Hz - 10 kHz
  
• Built in the USA
  
• Available individually, with a cast alloy mesh insert, a fine mesh steel mesh insert and a spiral steel mesh insert.
  
• The performance of each C7 driver is tested and verified, then assigned a unique serial number. Register your C7 speaker online to receive a copy of its specific acoustic test report.

General Specifications

• Continuous power handling (RMS): 100 W
  
• Recommended amplifier power (RMS): 50 - 150 W / Ch.
  
• Nominal impedance: 4 Ω
  
• Frequency response: 300 Hz - 10 KHz ± 3 dB
Dimensions


• Frame outer diameter (A): 88 mm / 3.45 inches
  
• Bolt circle diameter (B): 80 mm / 3.15 inches
  
• Mounting hole diameter (C) : 73 mm / 2.87 inches
  
• Outer diameter of the grill bowl (D): 100 mm / 3.95 inches
  
• Frontal grille projection (E) : 15 mm / 0.58 inches
  
• Installation depth (F): 37 mm (1.46 inches)
  
• Motor outer diameter (G): 60 mm / 2.36 inches

parameter

• Resistance of the voice coil (Re): 3.245 Ω
  
• Free-air resonance (Fs): 156.9 Hz
  
• Reference efficiency (no): 0.270%
  
• Efficiency: 86.5 dB at 1W / 1m
  
• efficiency  :  92.5 dB at 1W / 0.5m
  
• Sensitivity: 89.5 dB at 2.83V / 1m
  
• Electrical "Q" (Qes) : 0.590
  
• Mechanical "Q" (Qms): 6.454
  
• Total quality "Q" (Qts) : 0.541
  
• Equivalent volume (Vas): 0.015 cu. ft. (0.430 liters)
  
• Moving mass (Mms): 4.009 g
  
• Mechanical compliance of the suspension (Cms) : 0.000257 m/N
  
• Magnetic Strength (BL) : 4.66 N/A
  
• Effective membrane area (Sd) : 5.31 square inches (0.003426 square meters)
  
• Simple linear deflection (Xmax): 1 mm