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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

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.

Genuine Jensen quality construction for great vintage vibe.

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
 
4.9

(based on 19 reviews)

Ratings Distribution

  • 5 Stars

     

    (18)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Good quality (8)
  • Improves sound (7)
  • Easy to use (4)
  • Functional (3)

Cons

No Cons

Best Uses

  • Concerts (4)
  • Practicing (4)
  • Back-up (3)
    • Reviewer Profile:
    • Experienced (5), Professional musician (4)

Reviewed by 19 customers

Displaying reviews 1-10

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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.

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      (2 of 2 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.

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          (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.

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          (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

             
            5.0

            IMPROVED SOUND QUALITY

            By donie

            from Lynn Ma. 01904 USA

            About Me Experienced

            Ask me a question

            Pros

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

            Cons

              Best Uses

              • Backup
              • Concerts
              • Practicing

              Comments about Jensen C12K 100W 12" Replacement Speaker:

              excellent and improves the sound of amp. big IMPROVMENT works great nice sound all the way AROUND

              Comment on this reviewHelp Icon

              (1 of 1 customers found this review helpful)

               
              5.0

              Great Cleans Great Distortion!

              By PWC

              from Los Angeles, CA

              About Me Experienced

              Pros

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

              Cons

                Best Uses

                  Comments about Jensen C12K 100W 12" Replacement Speaker:

                  Speaker can handle massive distortion with great note seperation and clarity. Excellent speaker in high gain amps. It is a late break up speaker as opposed to early break up speakers. Late break up speakers are true to the distortion running into them and do not add or color the distortion.

                  Comment on this reviewHelp Icon

                  (3 of 3 customers found this review helpful)

                   
                  5.0

                  Quite pleased

                  By Whiskey Mike

                  from Ottawa Canada

                  About Me Professional Musician

                  Pros

                  • Good Quality
                  • Improves Sound

                  Cons

                    Best Uses

                    • Backup
                    • Concerts
                    • Practicing

                    Comments about Jensen C12K 100W 12" Replacement Speaker:

                    I have been a cellestion fan for years but quite by accident I had to replace the speaker in my Mesa Boogie studio 22 with one of these Jensens,, Wow the bottom end sparkle and sustain ..100 watt speaker with a 22 watt class A amp nice combo!

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                    Displaying reviews 1-10

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