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Item # 665004 | Customer Ratings: Ratings ( 5 Based on 2 reviews)

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Jensen C12K 100W 12" Replacement Speaker
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      Jensen C12K 100W 12" Replacement Speaker (665004)
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      Jensen C12K 100W 12" Replacement Speaker (665004)
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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.

Jensen C12K 100W 12" Replacement Speaker Features:

  • Ceramic magnet
    Vintage vibe
    Genuine Jensen quality construction


Jensen C12K 100W 12" Replacement Speaker Specifications:

  • 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 O
    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: 82┬Ám/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 O
    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 O
    Rated Power: 100 W
    Musical Power: 200 W
    Sensitivity@1W,1m: 99.1 db


Product Reviews
(Based on 2 reviews)
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  • Jensen ck-12 speaker

    As reviewed by Brian Ream on 8/8/2009

    Although the speaker tone has slightly more treble than the original, this is easily manageable by turning up the bass eq two notches on the twin amp. Having said this, the speakers performed great at low and high volumes in my recent maiden voyage with them at a Festival where many bands were playing. I wanted to thank Guitar center and the Italians who manufactured them. Brian Ream

    6 of 6 people found this review helpful.
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  • versatile workhorse

    As reviewed by Allan Perry on 11/11/2010

    ordered 2 speakers and installed them in my older tuck and roll twin speaker cabinet (total cabinet weight 34 pounds) 1st amp tried was my 1967 Roberts stereo tube amp and from bottom end to crisp highs the speakers didn't miss a lick. 2nd amp tried was marshall 100 watt head and using serial connection cable the speakers covered all the bandwidth of the guitars sound and almost couldn't be overdriven even with many guitar loop tracks at the same time. 3rd amp tried was the fender 100 watt solid state amp and It was just like old home with juicy blues to heavy metal. the c 12 k speaker is a full sound without being louder (even the drummer agreed that he sounded smaller) the jensen c12k speakers work well and help make my other (celestion eminence sun) speaker cabinets sound better. Product craftsmanship is excellent and out of the box a fine italian product.

    3 of 3 people found this review helpful.
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