C12K-2

C12K-2

General Characteristics for 8Ω

Nominal Overall Diameter
307 mm
12 in
Nominal Voice Coil Diameter
50 mm
2 in
Magnet Weight
1450 g
51 oz
Overall Weight
4.3 kg
9.48 lbs
Flux Density
1.15 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
6.7 Ω
Resonance Frequency
ƒS
79 Hz
Mechanical Q Factor
QMS
12.07
Electrical Q Factor
QES
0.49
Total Q Factor
QTS
0.47
Mechanical Moving Mass
MMS
32.2 g
Mechanical Compliance
CMS
126 µm/N
Force Factor
BxL
14.73 Wb/m
Equivalent Acoustic Volume
VAS
43.1 lt.
Diaphragm Area
SD
490.9 cm2
Voice Coil Inductance @ 1kHz
LE
0.84 mH

Constructive Characteristics for 8Ω

Magnet
Ferrite
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

General Characteristics for 16Ω

Nominal Overall Diameter
307 mm
12 in
Nominal Voice Coil Diameter
50 mm
2 in
Magnet Weight
1450 g
51 oz
Overall Weight
4.3 kg
9.48 lbs
Flux Density
1.15 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
12 Ω
Resonance Frequency
ƒS
85 Hz
Mechanical Q Factor
QMS
12.07
Electrical Q Factor
QES
0.62
Total Q Factor
QTS
0.59
Mechanical Moving Mass
MMS
28.5 g
Mechanical Compliance
CMS
123 µm/N
Force Factor
BxL
17.19 Wb/m
Equivalent Acoustic Volume
VAS
42.1 lt.
Diaphragm Area
SD
490.9 cm2
Voice Coil Inductance @ 1kHz
LE
1.21 mH

Constructive Characteristics for 16Ω

Magnet
Ferrite
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
99.5 dB
C12K-2
12",
100 watts
Ohms:

The C12K-2 provides a modern British voice in a vintage American package. This high-power speaker features a low-end punch with a warm, rich mid-range and smooth articulate highs. This speaker is not only capable of handling high levels of overdrive and distortion but is also capable of achieving clarity and detailed response with those sounds. The C12K-2 can beautifully produce the complex and nuanced tones of vintage and boutique amplifiers.

Lows
Tight
Mids
Warm
Highs
Smooth
Overdrive
Creamy
Guitarist Description
Fat, smooth and warm. Presented with overdrive distortion, it exhibits a silky, smooth, lead fuzz.
Bassist Description
Not recommended for bass.
Sound Samples
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Specification Sheet
Product Dimensions
Note: all dimensions are in mm.
User Reviews

I installed two of these C12K-2 speakers into an Orange PPC212 closed-back cabinet to use with my Orange Dual Dark 50 amplifier. They are a perfect match for both heavy metal and hard rock guitar riffs, but can turn around quickly and be equally adept at clean, intricate tones that work well with jazz and country styles as well. Tone descriptions aren't always accurate, but the ones Jensen provides for these speakers are very accurate. These speakers provide tight (not flubby at all) bass, mids that are present, but not overbearing, highs that are very smooth and not piercing, and overdrive tones that are not fizzy or harsh, but smooth and, as stated, creamy.

In my opinion, this is like the missing link between a Celestion Vintage 30 and Celestion G12H Anniversary. No ice pick / ear fatigue issues like with a Vintage 30, but plenty of lows and low mids, like a G12H. The price for these speakers is very reasonable, too. I highly recommend them for closed-back 2x12 cabinets with British-style amplifiers. I imagine they would also provide a very nice tonal alternative in Fender-style amps as well, toning down the piercing highs that sometimes result from those circuits. The Jensen C12K-2 is a contender in the field of British-style speakers, providing a very versatile tonal combination unique from other companies' speaker offerings.

Eric R.