I totally rebuilt a '72 Fender Twin and added a little lower end to it by installing some C12K's. Mostly I play a new Benedetto Benny and/or a '71 Les Paul thru it, and it rocks the house. Even the other "players" in the audience have to comment on the great "tone" I get. I love it, and being in 4 groups I use it 3 - 5 times a week.
C12K
General Characteristics:
| Nominal Overall Diameter | 307 mm | 12 in |
| Nominal Voice Coil Diameter | 50 mm | 2 in |
| Magnet Weight | 1450 g | 50 oz |
| Overall Weight | 9.65 lbs | |
| Flux Density | 1.10 T |
Thiele-Small Parameters:
| Voice Coil DC Resistance | RE | 7.0 Ω |
| Resonance Frequency | ƒS | 104.0 Hz |
| Mechanical Q Factor | QMS | 20.41 |
| Electrical Q Factor | QES | .67 |
| Total Q Factor | QTS | .65 |
| Mechanical Moving Mass | MMS | 28.8 g |
| Mechanical Compliance | CMS | 82 µm/N |
| Force Factor | BxL | 13.95 Wb/m |
| Equivalent Acoustic Volume | VAS | 27.6 lt. |
| Maximum Linear Displacement | XMAX | 1.0 mm |
| Reference Efficiency | nO | 4.43 % |
| Diaphragm Area | SD | 490.9 cm2 |
| Losses Electrical Resistance | RES | 210 Ω |
| Voice Coil Inductance @ 1kHz | LE | 0.84 mH |
Constructive Characteristics:
| Magnet | Ferrite |
| Voice Coil Winding | Copper |
| Voice Coil Former | Kapton |
| Cone | Paper |
| Surround | Integrated Paper |
| Dust Dome | Non Treated Cloth |
| Basket | Pressed Sheet Steel |
Electrical Characteristics:
| Nominal Impedance | 8 Ω |
| Rated Power | 100 W |
| Musical Power | 200 W |
| Sensitivity@1W,1m | 99.1 db |
C12K
12", 100 watts, 4Ω/8Ω/16Ω
A real workhorse, heavy on the mids with a solid, straightforward tone. When presented with overdrive distortion it powers through with lows that are bold and heavy.
Sound Samples:
Clean Sound Sample
Overdriven Sound Sample
Files:
Product Dimensions:
Frequency Response Chart:
User Reviews
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Ed in Hobe Sound, FL
I actually ended up purchasing a pair of C12K's. I installed them in my Fender Twin and absolutely love the sound. I was looking for speakers that wouldn't break up quickly because I like to have a lot of headroom in order to get some jazz tone and also make good use of my effects pedals. These speakers fit the bill and if I ever need to replace them I'm sure I'd just buy another pair as long as they're available
RC