Jensen Loudspeakers P12Q Vintage Alnico 16 Ohm 12'' Speaker - 40 Watt

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.

Specifications

General Characteristics
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)

Thiele-Small Parameters
Nominal Impedance: 16Ω
Voice Coil DC Resistance: 12.45 Ω
Resonance Frequency: 90 Hz
Mechanical Q Factor: 12.68
Total Q Factor: 2.3
Mechanical Moving Mass: 25.9 g
Mechanical Compliance: 122 um/N
Force Factor: 8.05 Wb/m
Equivalent Acoustic Volume: 41.2 lt.
Maximum Linear Displacement: + 1 mm
Reference Efficiency: 1.02 %
Diaphragm Area: 490.9 cm2
Losses Electrical Resistance: 56.3 Ω
Voice Coil Inductance @ 1kHz: 0.6 mH

Constructive Characteristics
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

Electrical Characteristics
Nominal Impedance: 16Ω
Rated Power: 40 W
Musical Power: 80 W
Sensitivity@1W,1m: 96.1 dB