JL Audio C7-350CM

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 

 Voice Coil Resistance (Re) 3.245 Ω
Free Air Resonance (Fs) 156.9 Hz
Reference Efficiency (no) 0.270%
Efficiency 86.5 dB @ 1W / 1m, 92.5 dB @ 1W / 0.5m
Sensitivity 89.5 dB @ 2.83V / 1m
Electrical “Q” (Qes) 0.590
Mechanical “Q” (Qms) 6.454
Total Speaker “Q” (Qts) 0.541
Equivalent Compliance (Vas) 0.015 cu. ft. (0.430 liters)
Moving Mass (Mms) 4.009 g
Mechanical Compliance (Cms) 0.000257 m/N
Magnetic Strength (BL) 4.66 N/A
Effective Piston Area (Sd)
5.31 sq. in. (0.003426 sq. m)
One Way Linear Excursion (Xmax) 1 mm  

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