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Product 665004

Jensen C12K 100W 12" Replacement Speaker   

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The Jensen 'C' Series provides pristine vintage tone coupled with the cost and weight advantages of ceramic magnets. Originally developed in the 1960...Read More

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  • 4 ohm

    $98.80 Top Rated

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  • 8 ohm

    $98.80 Top Rated

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OVERVIEW

Genuine Jensen quality construction for great vintage vibe.

The Jensen 'C' Series provides pristine vintage tone coupled with the cost and weight advantages of ceramic magnets. Originally developed in the 1960s to meet the ever increasing demands of the emerging pop music industry, the 'C' Series has remained influential ever since. 4/8/16 ohms.

FEATURES
  • Ceramic magnet
  • Vintage vibe
SPECIFICATIONS

C12K 100W 12" Replacement Speaker

  • Nominal Overall Diameter: 12 in
  • Nominal Voice Coil Diameter: 2 in
  • Magnet Weight: 50 oz
  • Overall Weight: 9.65 lbs
  • Flux Density: 1.10 T
  • Thiele-Small Parameters
  • Voice Coil DC Resistance: 7.0 Ω
  • Resonance Frequency : 104.0 Hz
  • Mechanical Q Factor: 20.41
  • Electrical Q Factor: .67
  • Total Q Factor: .65
  • Mechanical Moving Mass: 28.8 g
  • Mechanical Compliance: 82µm/N
  • Force Factor BxL: 13.95 Wb/m
  • Equivalent Acoustic Volume: 27.6 lt.
  • Maximum Linear Displacement: 1.0 mm
  • Reference Efficiency: 4.43 %
  • Diaphragm Area: 490.9 cm2
  • Losses Electrical Resistance: 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
Reviews
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Review Snapshot

by PowerReviews
JensenC12K 100W 12" Replacement Speaker
 
5.0

(based on 22 reviews)

Ratings Distribution

  • 5 Stars

     

    (21)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Good quality (10)
  • Improves sound (9)
  • Easy to use (4)
  • Functional (4)

Cons

No Cons

Best Uses

  • Concerts (6)
  • Practicing (6)
  • Back-up (4)
    • Reviewer Profile:
    • Experienced (6), Professional musician (5)

Reviewed by 22 customers

Displaying reviews 1-10

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5.0

Wonderful Customer Service

By Vic

from Astoria, Oregon

About Me Professional Musician

Verified Buyer

Pros

  • Good Quality
  • Improves Sound

Cons

    Best Uses

    • Concerts
    • Practicing

    Comments about Jensen C12K 100W 12" Replacement Speaker:

    These speakers brought my Vintage Fendor Amp back to premium sound. Very pleased.
    Also the customer service person I spoke to was extremely helpful in finding exactly what
    I needed

    Comment on this reviewHelp Icon

     
    5.0

    This Is Fender

    By Nathan

    from Houston

    About Me Experienced

    Verified Reviewer

    Pros

    • Functional
    • Good Quality
    • Improves Sound

    Cons

      Best Uses

      • Backup
      • Concerts
      • Practicing

      Comments about Jensen C12K 100W 12" Replacement Speaker:

      So if you're in doubt of your current 65 DRRI speaker, I have some experience in the matter of speaker swapping.

      I tried 7 different speakers, C12N, 12F150, P12N GA-SC64, Cannabisrex, Creamback, and of course the C12K. The only reason I ever started changing speakers is because people on forums were saying "the magic is in the speaker change", so I got on the band wagon. I went through each and every one of the above speakers, and inevitably came up dissatisfied. I owned my DRRI for less than a year in this time period, and inevitably I ended up getting a C12K after I sold the original. Once I installed the speaker it was like reversing time back to the moment when I bought the amp, and i remember just melting into the sound coming out of the amp. That was the C12K pumping out that sound, so I cannot believe I spent so much time just burning money on something I ended up not needing.

      That was my experience, the C12K was Fender, for Fender. I don't have the time to mess around with speakers, and it's a shame I wasted so much time when I could've been learning, but if nothing else I got experience, and I hope that someone else may consider this. Really, I have no idea why I changed anything on the deluxe, even though I changed the tubes and got some mods, I can't say it's any better or worse than the day I got it. If I could go back in time, I would've just left it stock, there was never an issue with the amp, including the speaker.

      Comment on this reviewHelp Icon

      (1 of 1 customers found this review helpful)

       
      5.0

      good replacement

      By david

      from undisclosed

      Verified Buyer

      Comments about C12K 100W 12" Replacement Speaker:

      Bought this for my Fender Twin(black face)replacement for stock Eminence. Big upgrade! Full and rich ,good bottom end and high's are classic Fender!

      Comment on this reviewHelp Icon

      (1 of 1 customers found this review helpful)

       
      4.0

      THAT's what it's supposed to sound like...

      By JoMo

      from Auburn, ME

      Verified Buyer

      Pros

        Cons

        • None

        Best Uses

        • Restoring amp to original equipment

        Comments about Jensen C12K 100W 12" Replacement Speaker:

        A used Fender Deluxe RI came with someone's idea of a replacement speaker in it. This Jensen speaker is what was originally in this RI amp. The change back to the Jensen is startling and wonderful. Even before "breaking in", this speaker gives the amp the sound that Fender intended, that we expect; not the sound of some random cheesy substitute.

        Comment on this reviewHelp Icon

         
        5.0

        LOVE These (bought 2), added classic warmth to my Acoustic

        By Woobr Googer w Green Teeth

        from Kalamazoo, MI

        About Me Experienced

        Ask me a question

        Verified Reviewer

        Pros

        • Easy To Use
        • Functional
        • Good Quality
        • Improves Sound

        Cons

          Best Uses

          • Concerts
          • Practicing

          Comments about Jensen C12K 100W 12" Replacement Speaker:

          I bought a pair of these to replace the stock speakers in my 120W Acoustic G120 DSP, GREATLY improved the sound, especially at the bottom end. Sold the amp (other issues), kept the speakers and now have them in a 150W Fender Mustang IV, it has the warmth and clarity of a Twin Reverb now. I alos occasionally play a P-Bass thru them, and they are still going strong.

          Comment on this reviewHelp Icon

          (3 of 3 customers found this review helpful)

           
          5.0

          Excellent match-up for '65 Deluxe Reverb Reissue

          By Cam

          from US

          Verified Reviewer

          Pros

          • Easy To Use
          • Good Quality
          • Improves Sound

          Cons

            Best Uses

              Comments about Jensen C12K 100W 12" Replacement Speaker:

              I have a DRRI that came with an Alnico P12Q--nice speaker, but I wanted more volume for some gigs, so I started a speaker quest. Have tested (and broken in) a WGS G12C, and a Weber California Ceramic. Both are good speakers (especially the Weber), but when I finally tried out a Jensen C12K, I found that THAT was the sound, sensitivity, girth, and loudness I had been searching for. It's louder than any of the others and sounds absolutely great, even straight out of the box. I only have a few hours on it but it's staying in the amp. I mostly use my baja tele with '58 pickups, brass saddles and bone nut (i.e. bright) into the non-modified vibrato channel (also bright) and this speaker just sparkles without being harsh at all. It also sounds great with my Les Paul Classic w/Duncan Antiquities. Just need to adjust the eq slightly and you're good to go. I have heard the speaker described as the "dull butter knife" of speakers, while others complain of speaker cry and top-end shrillness. I have found neither of these to be the case at all. Like I said, plenty of sparkle and huge bottom end--and it's not even broken in yet. I can't wait!
              I know this speaker is stock on the standard DRRI's and reissue Twins and I think Fender made a really solid choice. This speaker with this amp (and guitars) makes for a great sonic stew. No wonder so many guys I've read say they end up throwing the C12K back in to their Deluxes after going through a series of different speakers. Good job Jensen and Fender! And hats off to MF for the sale price.

              Comment on this reviewHelp Icon

              (3 of 3 customers found this review helpful)

               
              5.0

              Speaker replacement in my Marshall AVT2000 100W amp

              By Dave D.

              from North Wales, United Kingdom

              Comments about Jensen C12K 100W 12" Replacement Speaker:

              Replaced the Speaker this morning in my Marshall AVT2000 100W amp. The sound difference was fantastic. The old speaker was too bright and "brittle" on overdrive and I couldn't get a decent sound our of my Les Paul. All that has changed with this speaker, absolutely over the moon with it.

              Comment on this reviewHelp Icon

              (1 of 1 customers found this review helpful)

               
              5.0

              Replacement in a Marshall AVT2000, 100W

              By Dave D.

              from North Wales, United Kingdom

              Comments about Jensen C12K 100W 12" Replacement Speaker:

              Fitted this speaker today into my Marshall AVT2000 100W amp and the difference was fantastic. Could not get a good overdriven sound from my existing speaker using my Les Paul. There was too much top end and I could not make it sound decent. This speaker has changed all that and brought new life to my Amp and Les Paul, and my Strat too.

              Comment on this reviewHelp Icon

              (2 of 2 customers found this review helpful)

               
              5.0

              Excellent Replacement Speaker

              By Tom Evan

              from Winter Park, Fl

              About Me Professional Musician

              Pros

              • Good Quality
              • Improves Sound

              Cons

              • NA
              • None

              Best Uses

              • Excellent Replacement

              Comments about Jensen C12K 100W 12" Replacement Speaker:

              Replaced a Fender Special Design Speaker with this one and I'm very pleased with the improved overall frequency response and power handling capability.

              Comment on this reviewHelp Icon

              (1 of 1 customers found this review helpful)

               
              5.0

              Perfect replacement for my amp!!!

              By BenCbus

              from Columbus, OH

              About Me Experienced

              Pros

              • Clean Sound
              • High Power
              • Pedal Distortion

              Cons

                Best Uses

                • Clean Amp Ie Twin

                Comments about Jensen C12K 100W 12" Replacement Speaker:

                These speakers are the perfect replacement for my 70's Randall Commander II. The amp is basically a solid state version of a twin reverb. It has a ton of power and does clean sound really well. I blew the original speakers by playing at very high volumes. With the Jensen C12K's this amp took on a new life. The clean sounds are perfect, and in combination with my ds-1 it sounds like a vintage rock beast. Buy these speakers!

                Comment on this reviewHelp Icon

                Displaying reviews 1-10

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