Specification Sheet - C12N

12" - 50 W Vintage Ceramic Loudspeaker
C12N -
4Ω /
8Ω /
16Ω
General Characteristics
Nominal Overall Diameter 307 mm 12 in
Nominal Voice Coil Diameter 38 mm 1.5 in
Magnet Weight 810 g 29 oz
Overall Weight 3.3 kg 7.28 lbs
Flux Density 1.15 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 6.5 6.05 12.5 Ω
Resonance Frequency ƒS 113.3 113 110 Hz
Mechanical Q Factor QMS 6.55 7.52 6.84
Electrical Q Factor QES 0.93 1.05 1.26
Total Q Factor QTS 0.82 1.02 1.06
Mechanical Moving Mass MMS 29.4 29.9 25.6 g
Mechanical Compliance CMS 67 66 83 µm/N
Force Factor BxL 8.6 10.46 13.35 Wb/m
Equivalent Acoustic Volume VAS 22.8 22.6 28 lt.
Maximum Linear Displacement XMAX ±1.5 ±1 ±1 mm
Reference Efficiency nO 3.4 3.48 2.8 %
Diaphragm Area SD 490.9 490.9 490.9 cm2
Losses Electrical Resistance RES 23.2 42.5 70 Ω
Voice Coil Inductance @ 1kHz LE 0.58 0.9 1.55 mH
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 No
Electrical Characteristics
16Ω
Nominal Impedance 4 8 16 Ω
Rated Power 50 50 50 W
Musical Power 100 100 100 W
Sensitivity@1W,1m 98.4 97.7 97.5 dB
2.7121.04.391.030.0277.0307.0n° 8 holes Ø 6.5at 45° on Ø 293.58.0Ø134.0