Page 1
ALPHA 12
Nominal Basket Diameter
Impedance
Power Rating
Resonance
Usable Frequency Range
Sensitivity
Magnet Weight
Gap Height
Voice Coil Diameter
Mounting Information
Recommended Enclosure Volume
(vented)
Overall Diameter
Baffle Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Shipping Weight
Thiele-Small Parameters
Resonant Frequency (fs)
Impedance (Re)
Coil Inductance (Le)
Electromagnetic Q (Qes)
Mechanical Q (Qms)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Peak Diaphragm Displacement Volume (Vd)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass inc. Airload (Mms)
Equiv. Resistance of Mechanical
Suspension Loss (Rms)
Efficiency Bandwidth Product (EBP)
Voice Coil Overhang (Xmax)
Surface Area of Cone (Sd)
Impedance at Resonance (Zmax)
Maximum Linear Excursion (Xmech)
0
12", 304.8mm
8 ohms
150Wrms
49Hz
45Hz - 5kHz
see guide on web
20oz.
0.25", 6.35mm
1.5", 38.1mm
71 - 117 liters
2.5 - 4.15 cu. ft.
12.24", 310.9mm
11.04", 280.4mm
fitted as standard
fitted as standard
0.25", 6.4mm
11.63", 295.3mm
4.725", 120mm
7.1lbs., 3.2 kg.
49Hz
6.30 ohms
0.79mH
0.88
6.53
0.77
121.5 liters
4.29 cu. ft.
125cc
0.32mm/N
8.5 T-M
33 grams
1.54N*sec/M
56
2.4mm
519.5cm
2
53 ohms
13.21mm
_______________
Application Notes
Ideal for two-way sound
reinforcement systems,
keyboard, and guitar
combos.
__________________
Materials of Construction
● Kapton coil former for increased rigidity and
thermal protection
● Polyamide-imide coated two-layer, 32ga.,
copper voice coil for improved power
handling and durability.
● Ferrite Magnet
● Vented and extended core for increased power
handling
● Premium pressed steel basket for maximum
strength
● Paper cone
● Cloth cone edge
● Solid compostion felt dust cap
Eminence Speaker LLC
P. O. Box 360
Eminence, Kentucky 40019
USA
502.845.5622 phone
502.845.5653 fax
[email protected]
www.eminence.com
FORM 96119
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