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#665004 000000484

Jensen C12K 100W 12" Replacement Speaker  4 ohm

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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  
  • 4 ohm

    $98.80 Top Rated

    In stock

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  • 8 ohm

    $98.80 Top Rated

    In stock

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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
 
5.0

(based on 18 reviews)

Ratings Distribution

  • 5 Stars

     

    (18)

  • 4 Stars

     

    (0)

  • 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 18 customers

Displaying reviews 1-10

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5.0

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

By 

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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    (1 of 1 customers found this review helpful)

     
    5.0

    Excellent match-up for '65 Deluxe Reverb Reissue

    By 

    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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        (2 of 2 customers found this review helpful)

         
        5.0

        Speaker replacement in my Marshall AVT2000 100W amp

        By 

        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 

        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 

        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 

        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!

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          5.0

          IMPROVED SOUND QUALITY

          By 

          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

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            5.0

            Great Cleans Great Distortion!

            By 

            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

                (2 of 2 customers found this review helpful)

                 
                5.0

                Quite pleased

                By 

                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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                  (5 of 5 customers found this review helpful)

                   
                  5.0

                  Judge with your ears not your eyes.

                  By 

                  from Australia

                  About Me Experienced

                  Verified Buyer

                  Pros

                  • Good Quality
                  • Nice Midrange
                  • Tames A Bright Amp

                  Cons

                    Best Uses

                      Comments about Jensen C12K 100W 12" Replacement Speaker:

                      Came standard in my DRRI. Great mids and very nice bass and despite the forum musicians who play mostly on their computer keyboards - this speaker does not need to be changed out.

                      Yes it does appear to take quite a few hours to break in but after about 20 hours I can hear it improving still rounding out the bass and smoothing highs.

                      I like it so much I,ve purchased one for my Tech 21 Trademark 60 with startling results.

                      I play mostly clean or on the edge of break up so won't speak to it's ability to handle distortion.

                      I've been a Vintage 30 lover for years and this beats it everywhere IMO. Better bass and not quite such a prominent mid range and it can sparkle if you want that. Great note seperation
                      and definition.

                      Many change this speaker out and then find it was the best choice - give it a proper try out and you won't be sorry.

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                      Displaying reviews 1-10

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