12 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Basket
12 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Cone
12 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Side
12 inch Eminence American Standard Series Replacement Speaker Eminence Speaker Frequency Response
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ALPHA-12A 12" American Standard Series Speaker

Regular price
$119.99
Sale price
$119.99
Regular price
$149.99
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Recommended for professional audio mid-bass applications in a small sealed or medium vented enclosure.

Applications 

Woofer | Midbass | Pro Audio

Box Type: Sealed | Vented

Specifications

Download Spec Sheet   Download Cab Design
SPECIFICATION
Nominal Basket Diameter 12", 305 mm
Nominal Impedance* 8 Ω
Power Rating*
Program Power 300 W
Watts 150 W
Resonance 49 Hz
Usable Frequency Range 51 Hz - 4.3 kHz
Sensitivity* 95.6 dB
Magnet Weight 20 oz.
Gap Height 0.25", 6.4 mm
Voice Coil Diameter 1.5", 38 mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs) 49 Hz
DC Resistance (Re) 6.3 Ω
Coil Inductance (Le) 0.79m H
Mechanical Q (Qms) 6.53
Electromagnetic Q (Qes) 0.88
Total Q (Qts) 0.77
Compliance Equivalent Volume (Vas) 121.5 liters / 4.29 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 125 cc
Mechanical Compliance of Suspension (Cms) 0.32 mm/N
BL Product (BL) 8.5 T-M
Diaphragm Mass Inc. Airload (MMs) 33 grams
Efficiency Bandwidth Product (EBP) 56
Maximum Linear Excursion (Xmax) 2.4 mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit (Xlim) 6.6 mm
MOUNTING INFORMATION
Recommended Enclosure Volume
Sealed 17-22.7 liters / 0.6-0.8 cu.ft.
Vented 56.6-113.3 liters / 2-4 cu.ft.
Driver Volume Displaced 0.063 cu.ft. / 1.78 liters
Overall Diameter 12.26", 311.4 mm
Baffle Hole Diameter 11.06", 280.9 mm
Front Sealing Gasket Yes
Rear Sealing Gasket Yes
Mounting Holes Diameter 0.25", 6.4mm
Mounting Holes B.C.D. 11.71", 297.4mm
Depth 4.73", 120.1 mm
Net Weight 5.3 lbs, 2.4 kg
Shipping Weight 7.4 lbs, 3.36 kgs
MATERIALS OF CONSTRUCTION
Coil Construction Copper voice coil
Coil Former Polyimide former
Magnet Composition Ferrite magnet
Core Details Vented and extended core
   
Basket Materials Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition felt dust cap


Frequency Response

response graph