Specification Sheet - C12R
12" - 25 W Vintage Ceramic Loudspeaker
C12R -
8Ω
General Characteristics | ||
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Nominal Overall Diameter | 306 mm | 12 in |
Nominal Voice Coil Diameter | 25 mm | 0.98 in |
Magnet Weight | 270 g | 10 oz |
Overall Weight | 1.4 kg | 3.09 lbs |
Flux Density | 1 T | |
Voice Coil Winding Depth | 8 mm | 0.31 in |
Magnetic Gap Depth | 6 mm | 0.24 in |
Thiele-Small Parameters |
8Ω
|
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Voice Coil DC Resistance | RE | 6.7 | Ω |
Resonance Frequency | ƒS | 88.3 | Hz |
Mechanical Q Factor | QMS | 18.52 | |
Total Q Factor | QTS | 2.47 | |
Mechanical Moving Mass | MMS | 29.5 | g |
Mechanical Compliance | CMS | 110 | µm/N |
Force Factor | BxL | 6.24 | Wb/m |
Equivalent Acoustic Volume | VAS | 37.5 | lt. |
Maximum Linear Displacement | XMAX | ±0.8 | mm |
Reference Efficiency | nO | 1.2 | % |
Diaphragm Area | SD | 490.9 | cm2 |
Losses Electrical Resistance | RES | 67 | Ω |
Voice Coil Inductance @ 1kHz | LE | 0.49 | mH |
Electrical Q Factor | QES | 2.85 |
Constructive Characteristics | ||
---|---|---|
Magnet | Ferrite | |
Voice Coil Winding | Copper | |
Voice Coil Former | Kapton | |
Cone Material | Paper | |
Surround Material | Integrated Paper | |
Dust Dome Material | Felt | |
Basket Material | Pressed Sheet Steel | |
Surround Treatment | No |