Pro Audio

American Standard Series

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Low frequency woofer for pro audio in a vented mid-bass or bass enclosure. Also suitable for bass guitar.

Suggested Retail  $129.99
Your Price  $124.99

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This table charts the specifications for the KAPPA-15LFA speaker
Speaker Detail
Nominal Basket Diameter15", 381 mm
Nominal Impedance*8 Ω
Power Rating*
Program Power1200 W
Watts600 W
Resonance39 Hz
Usable Frequency Range38 Hz - 2.7 kHz
Sensitivity*99 dB
Magnet Weight95 oz.
Gap Height0.37", 9.5 mm
Voice Coil Diameter3", 76 mm
Thiele & Small Parameters
Resonant Frequency (fs)39 Hz
DC Resistance (Re)5.4 Ω
Coil Inductance (Le)1.27m H
Mechanical Q (Qms)6.08
Electromagnetic Q (Qes)0.41
Total Q (Qts)0.38
Compliance Equivalent Volume (Vas)159 liters / 5.62 cu.ft.
Peak Diaphragm Displacement Volume (Vd)471 cc
Mechanical Compliance of Suspension (Cms)0.15 mm/N
BL Product (BL)18.6 T-M
Diaphragm Mass Inc. Airload (MMs)105 grams
Efficiency Bandwidth Product (EBP)95
Maximum Linear Excursion (Xmax)5.5 mm
Surface Area of Cone (Sd)856.3 cm2
Maximum Mechanical Limit (Xlim)10.4 mm
Mounting Information
Recommended Enclosure Volume
Sealed N/a
Vented 62-193 liters / 2.2-6.8 cu.ft.
Driver Volume Displaced0.145 cu.ft. / 4.12 liters
Overall Diameter15.16", 385.1 mm
Baffle Hole Diameter13.87", 352.3 mm
Front Sealing GasketYes
Rear Sealing GasketYes
Mounting Holes Diameter0.25", 6.4mm
Mounting Holes B.C.D.14.56", 369.8mm
Depth6.38", 162.1 mm
Net Weight20 lbs, 9.07 kg
Shipping Weight22.3 lbs, 10.12 kgs
Materials of Construction
Coil ConstructionCopper 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

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.