12" Tornado

General Characteristics: 
Nominal Overall Diameter307 mm12 in
Nominal Voice Coil Diameter50 mm2 in
Magnet Weight200 g7 oz
Overall Weight4.45 lbs
Flux Density1.20 T
Thiele-Small Parameters: 
Voice Coil DC ResistanceRE6.94 Ω
Resonance FrequencyƒS72.4 Hz
Mechanical Q FactorQMS13.60
Electrical Q FactorQES0.63
Total Q FactorQTS0.60
Mechanical Moving MassMMS33.8 g
Mechanical ComplianceCMS143 µm/N
Force FactorBxL13.00 Wb/m
Equivalent Acoustic VolumeVAS48.7 lt.
Maximum Linear DisplacementXMAX+/- 1.0 mm
Reference EfficiencynO2.82 %
Diaphragm AreaSD490.9 cm2
Losses Electrical ResistanceRES148.9 Ω
Voice Coil Inductance @ 1kHzLE0.7 mH
Constructive Characteristics: 
MagnetNeodymium
Voice Coil WindingCopper
Voice Coil FormerNomex
ConePaper
SurroundIntegrated Paper
Dust DomeNon Treated Cloth
BasketPressed Sheet Steel
Electrical Characteristics: 
Nominal Impedance8 Ω
Rated Power100 W
Musical Power200 W
Sensitivity@1W,1m97.3 dB
JN12-100TR
12", 100 watts, 4Ω/8Ω/16Ω

The Jensen Jet Tornado has a crystal clear tone, accented with shimmering highs with each note sounding tight and well defined. Even when overdriven the notes remain defined with lots of bite

Sound Samples: 
Clean Sound Sample
Overdriven Sound Sample
Specification Sheet: 
JN12-100TR_Specification_Sheet.pdf
Product Dimensions: 
Frequency Response Chart: 
Try our new Tone GeneratorJensen Tone ChartVideos

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