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Eminence Kappa-12A 12" Driver 8 Ohm

Brand:| Model: Kappa-12A
The Eminence Kappa-12A 12" speaker is recommended for professional audio as a mid/hi or full-range in a vented enclosure.
  • Kapton coil former
  • Polyamide-imide coated aluminum voice coil
  • Ferrite magnet
  • Vented pole piece
  • Pressed steel basket
  • Paper cone
  • Cloth accordian surround
Part # 
Weight: 18 lbs.  
Your Price
Eminence Baseball Cap
Qty: 1Part # 520-300
List Price:$19.99
Part # 290-456
Qty:  EA
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Product Details

Eminence Kappa-12A 12" Driver 8 Ohm

The Eminence Kappa-12A 12" speaker is recommended for professional audio as a mid/hi or full-range in a vented enclosure. Made in the USA. 7-year manufacturer's warranty!

Product Specifications
  • Nominal Diameter12"
  • Power Handling (RMS)450 Watts
  • Power Handling (max)900 Watts
  • Impedance8 ohms
  • Frequency Response62 to 4,200 Hz
  • Sensitivity99.3 dB 1W/1m
  • Voice Coil Diameter3"
  • Magnet Weight80 oz.
Thiele-Small Parameters
  • Resonant Frequency (Fs)45 Hz
  • DC Resistance (Re)5.41 ohms
  • Voice Coil Inductance (Le)0.77 mH
  • Mechanical Q (Qms)7.76
  • Electromagnetic Q (Qes)0.28
  • Total Q (Qts)0.27
  • Compliance Equivalent Volume (Vas)4 ft.³
  • Mechanical Compliance of Suspension (Cms)0.3 mm/N
  • BL Product (BL)15.2 Tm
  • Diaphragm Mass Inc. Airload (Mms)42g
  • Maximum Linear Excursion (Xmax)3.2 mm
  • Surface Area of Cone (Sd)519.5 cm²
Materials of Construction
  • Cone MaterialPaper
  • Surround MaterialCloth
  • Voice Coil Wire MaterialAluminum
  • Voice Coil FormerKapton® / Polyimide
  • Basket / Frame MaterialSteel
  • Magnet MaterialFerrite
Mounting Information
  • Overall Outside Diameter12.26"
  • Baffle Cutout Diameter11"
  • Depth5.63"
  • # Mounting Holes8
Optimum Cabinet Size (determined using BassBox 6 Pro High Fidelity suggestion)
  • Sealed Volume0.41 ft.³
  • Sealed F3143 Hz
  • Vented Volume0.94 ft.³
  • Vented F391 Hz
Eminence Kappa-12A 12" Driver 8 Ohm
  • BrandEminence Speaker
  • ModelKappa-12A
  • Part Number290-456
  • UPC876358000289
  • Product CategoryWoofers, Subwoofers & Midrange Speakers
  • Unit of MeasureEA
  • Product Rating
    (3 Reviews)
  • Weight18 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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in the Woofers, Subwoofers & Midrange Speakers product category.


Eminence Kappa-12A 12" Driver 8 Ohm
Eminence Kappa-12A 12" Driver 8 Ohm is rated 4.6667 out of 5 by 3.
Rated 5 out of 5 by from EXCELLENT SERVICEEmminence, the speaker mnf were extremely helpful in identifying the driver I needed for my monitor and Parts Express were wonderful to deal with. They had my speaker out to me in 2 days (free shipping) after order was confirmed.
Date published: 2014-11-04
Rated 4 out of 5 by from Nice specs - But???I bought this driver to add a little more bass to a 2x12 2-way speaker. I put it in the bottom cut-out and added a coil for a 2.5 way. That part worked out great. No muddiness in the midrange anymore. Cranked it up and the voice coil started slapping. Back to the modeling programs.Then the Dayton PA310 went on sale. I put this driver in the other speaker. Same crossover and fired it up. No slap and much deeper bass. This Kappa driver is not bad, it's just didn't fill my needs or expectations. I'll use it somewhere else down the road for sure.
Date published: 2012-07-20
Rated 5 out of 5 by from Great Pro-Midrange/Mid-BassI used this as a pro midrange driver, sealed, 300hz-2.5khz.It works really well in this role and adds exceptional dynamics and clarity to vocals.I'm a big fan of "paper" reproducing the vocal range.This kind of driver adds frightening realism to drums when you start pushing overall volume.
Date published: 2011-11-01

Product Q&A

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Eminence Kappa-12A 12" Driver 8 Ohm

I have an amplifier that delivers 500 watts rms at 4 ohms if I connect this amp to this wooffer, there is no risk of burning the amplifier or woffer since the woofer is 450 Rms thank you very much

Asked by: foguense
There is always a risk of damaging the woofer regardless of power. 500 watts will be a good amount of power to drive this. If you watch excursion and respect the driver limits you will be fine.
Answered by: MattP
Date published: 2014-01-08

hello good day what is the ideal amplifier for the woofer thank you very much

Asked by: foguense
Due to the sensitivity of this woofer, I would say anything that produces 300 watts or more at 8 ohms will be sufficient. If you are looking to get the most from the woofer and are not worried about excursion, anything at its rated RMS power or higher will be ideal.
Answered by: MattP
Date published: 2014-01-03

Will this replace the woofer for a Mackie srm450, will it fit 12.5"?

Asked by: Boogie
According to the 450's owner's manual online, the LF driver is NOT an odd-sized speaker. It is 12". The mounting hole should match. You do need to consider whether the available cabinet depth is sufficient for this replacement speaker, and I can't determine that without having the Mackie in hand.Also, most quality powered speakers have circuitry such as EQ, crossovers and limiters that optimize the internal amp to work well with a specific speaker. That circuitry may not work as well with a different speaker.You could do this DIY project, but I would first contact Mackie; I have found their support helpful and repair costs reasonable. Compare the factory repair cost to your DIY cost as a factor in your decision.
Answered by: Bushman
Date published: 2013-09-17

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