12" Tornado Classic 100

16Ω

General Characteristics for 4Ω

Nominal Overall Diameter
307 mm
12 in
Nominal Voice Coil Diameter
50 mm
2 in
Magnet Weight
200 g
7 oz
Overall Weight
2 kg
4.41 lbs
Flux Density
1.2 T
Voice Coil Winding Depth
10 mm
0.39 in
Magnetic Gap Depth
8 mm
0.31 in

Thiele-Small Parameters for 4Ω

Voice Coil DC Resistance
RE
3.31 Ω
Resonance Frequency
ƒS
76.5 Hz
Mechanical Q Factor
QMS
11.08
Electrical Q Factor
QES
0.61
Total Q Factor
QTS
0.58
Mechanical Moving Mass
MMS
31.2 g
Mechanical Compliance
CMS
138 µm/N
Force Factor
BxL
9.02 Wb/m
Equivalent Acoustic Volume
VAS
47.2 lt.
Maximum Linear Displacement
XMAX
± 1 mm
Reference Efficiency
nO
3.33 %
Diaphragm Area
SD
490.9 cm2
Losses Electrical Resistance
RES
60 Ω
Voice Coil Inductance @ 1kHz
LE
0.45 mH

Constructive Characteristics for 4Ω

Magnet
Neodymium
Voice Coil Winding
Copper
Voice Coil Former
Nomex
Cone Material
Paper
Surround Material
Integrated Paper
Dust Dome Material
Non-treated Cloth
Basket Material
Pressed Sheet Steel
Surround Treatment
Yes

Electrical Characteristics for 4Ω

Nominal Impedance
4 Ω
Rated Power
100 W
Musical Power
200 W
Sensitivity@1W,1m
98.2 dB

General Characteristics for 8Ω

Nominal Overall Diameter
307 mm
12 in
Nominal Voice Coil Diameter
50 mm
2 in
Magnet Weight
200 g
7 oz
Overall Weight
2 kg
4.41 lbs
Flux Density
1.2 T
Voice Coil Winding Depth
10 mm
0.39 in
Magnetic Gap Depth
8 mm
0.31 in

Thiele-Small Parameters for 8Ω

Voice Coil DC Resistance
RE
6.81 Ω
Resonance Frequency
ƒS
72 Hz
Mechanical Q Factor
QMS
9.51
Electrical Q Factor
QES
0.63
Total Q Factor
QTS
0.52
Mechanical Moving Mass
MMS
29.9 g
Mechanical Compliance
CMS
163 µm/N
Force Factor
BxL
12.93 Wb/m
Equivalent Acoustic Volume
VAS
55.9 lt.
Maximum Linear Displacement
XMAX
± 1 mm
Reference Efficiency
nO
2.82 %
Diaphragm Area
SD
490.9 cm2
Losses Electrical Resistance
RES
148.9 Ω
Voice Coil Inductance @ 1kHz
LE
0.7 mH

Constructive Characteristics for 8Ω

Magnet
Neodymium
Voice Coil Winding
Copper
Voice Coil Former
Nomex
Cone Material
Paper
Surround Material
Integrated Paper
Dust Dome Material
Non-treated Cloth
Basket Material
Pressed Sheet Steel
Surround Treatment
Yes

Electrical Characteristics for 8Ω

Nominal Impedance
8 Ω
Rated Power
100 W
Musical Power
200 W
Sensitivity@1W,1m
98.5 dB

General Characteristics for 16Ω

Nominal Overall Diameter
307 mm
12 in
Nominal Voice Coil Diameter
50 mm
2 in
Magnet Weight
200 g
7 oz
Overall Weight
2 kg
4.41 lbs
Flux Density
1.2 T
Voice Coil Winding Depth
10 mm
0.39 in
Magnetic Gap Depth
8 mm
0.31 in

Thiele-Small Parameters for 16Ω

Voice Coil DC Resistance
RE
13.12 Ω
Resonance Frequency
ƒS
70 Hz
Mechanical Q Factor
QMS
14.28
Electrical Q Factor
QES
0.74
Total Q Factor
QTS
0.7
Mechanical Moving Mass
MMS
31.9 g
Mechanical Compliance
CMS
163 µm/N
Force Factor
BxL
15.72 Wb/m
Equivalent Acoustic Volume
VAS
55.7 lt.
Maximum Linear Displacement
XMAX
± 1 mm
Reference Efficiency
nO
2.45 %
Diaphragm Area
SD
490.9 cm2
Losses Electrical Resistance
RES
252.5 Ω
Voice Coil Inductance @ 1kHz
LE
1.16 mH

Constructive Characteristics for 16Ω

Magnet
Neodymium
Voice Coil Winding
Copper
Voice Coil Former
Nomex
Cone Material
Paper
Surround Material
Integrated Paper
Dust Dome Material
Non-treated Cloth
Basket Material
Pressed Sheet Steel
Surround Treatment
Yes

Electrical Characteristics for 16Ω

Nominal Impedance
16 Ω
Rated Power
100 W
Musical Power
200 W
Sensitivity@1W,1m
97 dB
JN12-100TR
12",
100 watts
Ohms
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

Lows
Loose/Fat
Mids
Subdued
Highs
Smooth
Overdrive
Edgy
Guitarist Description
Crystal clear, clean tones accented by shimmering highs. When presented with overdrive distortion the notes remain well defined with lots of bite.
Specification Sheet
Product Dimensions
Frequency Response Charts
16Ω
User Reviews

I installed a pair of these in my 1970 Fender Twin to replace the original JBL D120F's that were in there. The tone of these is great. Most would call me crazy for swapping the JBL's out, but they add 30 lbs. the amp just on their own and I'm gigging weekly with my Twin so I was looking for something that kept the great tone, but lightened the amp up. With the Jensens installed, the weight of the amp went from 82 lbs down to around 60 lbs. with the Jensens. A huge weight loss to say the least. Worth every penny for the tone and the light weight! The have all the sparkle and chime with tight low end you could hope for.

commonbeat

For a year and a half I was going through all kinds of speakers for my Roland JC120. I've tried almost all the eminence stuff and quit a few Celestions, the only thing that I settled with that came close to what I was hearing was the Texas Heat. It was good but there's still something missing that I was not hearing specially during live gigs. After some researching going on I thought I would give it one more shot and if it does not work,I still have the Texas Heat to fall back on. So I bought two Jensen 12" tornados for my JC120, after stumbling upon it on line. And after I put it through one gig,I had finally found the speakers that really made me sound like I have some talent! I had warmth and clarity both doing solo works and rhythms. I don't have a very difficult set up,all I got is three Boss pedal, SD-1 to kick in for solos,OD-3 for my main rhythms and DD-7 for some delay. Needless to say I sounded freaking awesome and Loud!!! I'm glad I took that one last step of the journey! I guess I've been a Jensen guy all along and didn't really realized it....... Oh! and one last bonus,my JC120 is now a lot lighter!!!

WB Brown Sound

I just recently bought a new amp cause I need a light, portable amp on the go for those smaller stages, so I just bought the new Fender Champion 40 1x12. (Loud for a little guy!) The stock speakers just suck! I basically use just the clean channel only with my Tech 21 Hot Plexitone and TC Electronic Flashback X4. After installing a wonderful 12'' Jensen Tornado, the amp really opened up and has some serious dynamics and definition,very good chunky low end - very spongy feel, kinda like EL84, mids are not very over powering, it has clarity but most of all a very sweet high, creamy top end. The most surprising thing about this is that this amp that has the Jensen Tornado 12" is a solid state amp! Other guitar players on the scene that heard my sound swore that I have a tube amp crank behind me! Go figure that..... Highly recommend Jensen Tornado 12" on solid state amp! It gives it a tube amp feel and sound. It really does give life to a sterile, stale solid state amp.

Warren in San Diego
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