Description
Pre-owned Jensen P12Q 40-Watt Speaker (8 ohms). In excellent condition.
| Nominal Overall Diameter | 306 mm | 12 in |
| Nominal Voice Coil Diameter | 32 mm | 1.26 in |
| Magnet Weight | 300 g | 11 oz |
| Overall Weight | 1.9 kg | 4.19 lbs |
| Flux Density | 0.98 T | |
| Voice Coil Winding Depth | 8 mm | 0.31 in |
| Magnetic Gap Depth | 6 mm | 0.24 in |
| Nominal Impedance | 8Ω | 16Ω | 32Ω | |
|---|---|---|---|---|
| Voice Coil DC Resistance | RE | 5.6 Ω | 12.45 Ω | 25.2 Ω |
| Resonance Frequency | ƒS | 90.5 Hz | 90 Hz | 85.6 Hz |
| Mechanical Q Factor | QMS | 11.57 | 12.68 | 10.94 |
| Electrical Q Factor | QES | 3.33 | ||
| Total Q Factor | QTS | 2.03 | 2.3 | 2.55 |
| Mechanical Moving Mass | MMS | 26.8 g | 25.9 g | 25.3 g |
| Mechanical Compliance | CMS | 115 µm/N | 122 µm/N | 138 µm/N |
| Force Factor | BxL | 5.88 Wb/m | 8.05 Wb/m | 10.15 Wb/m |
| Equivalent Acoustic Volume | VAS | 39.5 lt. | 41.2 lt. | 46.6 lt. |
| Maximum Linear Displacement | XMAX | ± 1 mm | ± 1 mm | ± 1 mm |
| Reference Efficiency | nO | 1.42 % | 1.02 % | 0.84 % |
| Diaphragm Area | SD | 490.9 cm2 | 490.9 cm2 | 490 cm2 |
| Losses Electrical Resistance | RES | 25.5 Ω | 56.3 Ω | 82.7 Ω |
| Voice Coil Inductance @ 1kHz | LE | 0.67 mH | 0.6 mH | 1.59 mH |
| Magnet | Alnico | |
| Voice Coil Winding | Copper | |
| Voice Coil Former | Nomex | |
| Cone Material | Paper | |
| Surround Material | Integrated Paper | |
| Dust Dome Material | Solid Paper | |
| Basket Material | Pressed Sheet Steel | |
| Surround Treatment | No |
| Nominal Impedance | 8Ω | 16Ω | 32Ω | |
|---|---|---|---|---|
| Rated Power | 40 W | 40 W | 40 W | |
| Musical Power | 80 W | 80 W | 80 W | |
| Sensitivity@1W,1m | 94.4 dB | 96.1 dB | 92.3 dB |
12",
40 watts
The P12Q is a lower power sibling to the P12N, with a smaller voice coil and a vintage steel basket, nicknamed the “hot dog” or “sausage” because of the shape of the openings in its basket frame. Warm and balanced sounding, with a nice bite in the upper midrange, it is a very interesting allrounder, for many different applications from the traditional country and jazz tones to the more aggressive rock and roll and blues application. Typically it was found in ‘holy grail’ amps such as the vintage Tweed Deluxe and other similar models as well as the Ampeg® Jet, Gibson® GA-20 and many more.