Specification Sheet - C15N

15" - 50 W Vintage Ceramic Loudspeaker
C15N -
4Ω /
8Ω /
16Ω
General Characteristics
Nominal Overall Diameter 385 mm 15 in
Nominal Voice Coil Diameter 38 mm 1.5 in
Magnet Weight 810 g 29 oz
Overall Weight 4.2 kg 9.26 lbs
Flux Density 1 T
Voice Coil Winding Depth 10 mm 0.39 in
Magnetic Gap Depth 8 mm 0.31 in
Thiele-Small Parameters
16Ω
Voice Coil DC Resistance RE 3.12 6.2 12.3 Ω
Resonance Frequency ƒS 74.2 73 73.5 Hz
Mechanical Q Factor QMS 5.93 6.8 8.48
Total Q Factor QTS 0.87 1.11 1.46
Mechanical Moving Mass MMS 41.2 54.7 51 g
Mechanical Compliance CMS 112 87 92 µm/N
Force Factor BxL 7.68 10.85 12.81 Wb/m
Equivalent Acoustic Volume VAS 89.4 70.3 74.4 lt.
Maximum Linear Displacement XMAX ±1.5 ±1 ±1 mm
Reference Efficiency nO 3.46 2.84 1.61 %
Diaphragm Area SD 754.7 754.8 754.8 cm2
Losses Electrical Resistance RES 18.2 39 57 Ω
Voice Coil Inductance @ 1kHz LE 0.58 0.93 1.28 mH
Electrical Q Factor QES 1.02 1.33 1.76
Constructive Characteristics
Magnet Ferrite
Voice Coil Winding Copper
Voice Coil Former Kapton
Cone Material Paper
Surround Material Integrated Paper
Dust Dome Material Solid Paper
Basket Material Pressed Sheet Steel
Surround Treatment Yes
Electrical Characteristics
16Ω
Nominal Impedance 4 8 16 Ω
Rated Power 50 50 50 W
Musical Power 100 100 100 W
Sensitivity@1W,1m 98.5 96.3 95.4 dB
Product Dimensions
C15N angled view
C15N bottom view
C15N side view
C15N top view