Jensen Vintage Ceramic Series
C12R
12", 25 watts, 8/16 Ω
Warm low and mid response with smooth/bright highs. When presented with overdrive distortion, it presents smooth crunch with low-end focus.
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General Characteristics |
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| Nominal Overall Diameter | 306 mm | 12 in |
| Nominal Voice Coil Diameter | 25 mm | 1.0 in |
| Magnet Weight | 270 g | 10 oz |
| Overall Weight | 3.10 lbs | |
| Flux Density | 1.0 T | |
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Thiele-Small Parameters |
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| Voice Coil DC Resistance | RE | 6.50 Ω |
| Resonance Frequency | ƒS | 74.0 Hz |
| Mechanical Q Factor | QMS | 21.48 |
| Electrical Q Factor | QES | 2.06 |
| Total Q Factor | QTS | 1.88 |
| Mechanical Moving Mass | MMS | 24.6 g |
| Mechanical Compliance | CMS | 187 µm/N |
| Force Factor | BxL | 5.98 Wb/m |
| Equivalent Acoustic Volume | VAS | 63.2 lt. |
| Maximum Linear Displacement | XMAX | 0.8 mm |
| Reference Efficiency | nO | 1.2 % |
| Diaphragm Area | SD | 490.8 cm2 |
| Losses Electrical Resistance | RES | 67 Ω |
| Voice Coil Inductance @ 1kHz | LE | 0.49 mH |
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Constructive Characteristics |
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| Magnet | Ferrite | |
| Voice Coil Winding | Copper | |
| Voice Coil Former | Kapton | |
| Cone | Paper | |
| Surround | Integrated Paper | |
| Dust Dome | Felt | |
| Basket | Pressed Sheet Steel | |
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Electrical Characteristics |
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| Nominal Impedance | 8 Ω | |
| Rated Power | 25 W | |
| Musical Power | 50 W | |
| Sensitivity@1W,1m | 93.8 | |
