Guitar Amp Repair - Mods - Jensen Speakers

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This 12" speaker is the embodiment of vintage tone in both clean and in distortion modes. Without a doubt it is the classic 12" AlNiCo speaker. Appearing first in the 1950's, it is the lead guitar speaker from which all others have taken their roots.

Bell Cover must be ordered separately

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General Characteristics

Nominal Overall Diameter
307mm
12 in
Nominal Voice Coil Diameter
38 mm
1.5 in
Magnet Weight
355 g
12.5 oz
Flux Density
1.26 T

Thiele-Small Parameters

Voice Coil DC Resistance RE
6.20 Ω
Resonance Frequency ƒS
90.0 Hz
Mechanical Q Factor QMS
5.72
Electrical Q Factor QES
0.82
Total Q Factor QTS
0.72
Mechanical Moving Mass MMS
26.7 g
Mechanical Compliance CMS
119 µm/N
Force Factor BxL
10.64Wb/m
Equivalent Acoustic Volume VAS
40.2 lt.
Maximum Linear Displacement XMAX
1.0 mm
Reference Efficiency nO
3.4 %
Diaphragm Area SD
490.8 cm2
Losses Electrical Resistance RES
43.0 Ω
Voice Coil Inductance @ 1kHz LE
0.87 mH

Constructive Characteristics

Magnet
AlNiCo
Voice Coil Winding
Copper
Voice Coil Former
Kapton
Cone
Paper
Surround
Integrated Paper
Dust Dome
Solid Paper
Basket
Pressed Sheet Steel

Electrical Characteristics

Nominal Impedance
8/16 Ω
Rated Power
50 W
Musical Power
100 W
Sensitivity@1W, 1m
98.4 dB