Pro Audio

American Standard Series

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KAPPA-12A

Recommended for professional audio as a mid/hi or full range in a vented enclosure.

Suggested Retail  $109.99
Your Price  $104.99

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This table charts the specifications for the KAPPA-12A speaker
Speaker Detail
Specification
Nominal Basket Diameter12", 305 mm
Nominal Impedance*8 Ω
Power Rating*
Program Power900 W
Watts450 W
Resonance45 Hz
Usable Frequency Range62 Hz - 4.2 kHz
Sensitivity*99.3 dB
Magnet Weight80 oz.
Gap Height0.37", 9.5 mm
Voice Coil Diameter3", 76 mm
Thiele & Small Parameters
Resonant Frequency (fs)45 Hz
DC Resistance (Re)5.41 Ω
Coil Inductance (Le)0.77m H
Mechanical Q (Qms)7.76
Electromagnetic Q (Qes)0.28
Total Q (Qts)0.27
Compliance Equivalent Volume (Vas)112.1 liters / 3.96 cu.ft.
Peak Diaphragm Displacement Volume (Vd)166 cc
Mechanical Compliance of Suspension (Cms)0.3 mm/N
BL Product (BL)15.2 T-M
Diaphragm Mass Inc. Airload (MMs)42 grams
Efficiency Bandwidth Product (EBP)161
Maximum Linear Excursion (Xmax)3.2 mm
Surface Area of Cone (Sd)519.5 cm2
Maximum Mechanical Limit (Xlim)11.5 mm
Mounting Information
Recommended Enclosure Volume
Sealed N/a
Vented 34-62 liters / 1.2-2.2 cu.ft.
Driver Volume Displaced0.09 cu.ft. / 2.55 liters
Overall Diameter12.26", 311.4 mm
Baffle Hole Diameter11", 279.4 mm
Front Sealing GasketYes
Rear Sealing GasketYes
Mounting Holes Diameter0.25", 6.4mm
Mounting Holes B.C.D.11.71", 297.4mm
Depth5.63", 143 mm
Net Weight14.9 lbs, 6.76 kg
Shipping Weight17.9 lbs, 8.12 kgs
Materials of Construction
Coil ConstructionAluminum voice coil
Coil FormerPolyimide former
Magnet CompositionFerrite magnet
Core DetailsVented core
  
Basket MaterialsPressed steel basket
Cone CompositionPaper cone
Cone Edge CompositionCloth cone edge
Dust Cap CompositionSolid composition paper dust cap
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Footnotes

Multiple units exceed published ratings evaluated under EIA 426A specification while tested in a free-air, non-temperature-controlled environment. Multiple compression drivers exceeded published ratings evaluated under EIA-426A or AES specification while mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperature-controlled environment.

The average output across the usable frequency range when applying 1W/1m into the nominal impedance. i.e: 2.83V/8Ω, 4V/16Ω. Eminence response curves are measured under the following conditions: All speakers are tested at 1W/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25" supplied microphone (software calibrated) mounted 1m from wall/baffle | 2 ft. x 2 ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Yamaha P3500S amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom-made wedges). Compression drivers were tested using a 2ft x 2ft baffle built into the wall with horn front mounted.

BETA 8CX, 10CX and 12CX are coaxial speakers with tweeter sold separately. The data for these coaxial woofers was calculated with the ASD:1001 driver screwed into the woofer, but not active.

Prices, specifications and product cosmetics are subject to change without notice.