Jensen Vintage Alnico Series
P12Q
12", 40 watts, 8/16/32 Ω
The P12Q has a very warm, mid-focused bite with clear, bright highs. When presented with overdrive distortion the P12Q remains well-balanced.
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General Characteristics |
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| Nominal Overall Diameter | 306 mm | 12 in |
| Nominal Voice Coil Diameter | 32 mm | 1.25 in |
| Magnet Weight | 300 g | 10.5 oz |
| Overall Weight | 4.10 lbs | |
| Flux Density | 0.98 T | |
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Thiele-Small Parameters |
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| Voice Coil DC Resistance | RE | 5.72 Ω |
| Resonance Frequency | ƒS | 90.4 Hz |
| Mechanical Q Factor | QMS | 10.62 |
| Electrical Q Factor | QES | 2.38 |
| Total Q Factor | QTS | 1.94 |
| Mechanical Moving Mass | MMS | 22.1 g |
| Mechanical Compliance | CMS | 140 µm/N |
| Force Factor | BxL | 5.50 Wb/m |
| Equivalent Acoustic Volume | VAS | 47.5 lt. |
| Maximum Linear Displacement | XMAX | 1.0 mm |
| Reference Efficiency | nO | 1.42 % |
| Diaphragm Area | SD | 490.8 cm2 |
| Losses Electrical Resistance | RES | 25.5 Ω |
| Voice Coil Inductance @ 1kHz | LE | 0.67 mH |
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Constructive Characteristics |
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| Magnet | AlNiCo | |
| Voice Coil Winding | Copper | |
| Voice Coil Former | Nomex | |
| Cone | Paper | |
| Surround | Integrated Paper | |
| Dust Dome | Solid Paper | |
| Basket | Pressed Sheet Steel | |
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Electrical Characteristics |
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| Nominal Impedance | 8 Ω | |
| Rated Power | 40 W | |
| Musical Power | 80 W | |
| Sensitivity@1W,1m | 95.0 dB | |
