Key Features
- 12" (304.8mm) Mid-Bass Driver
- 150W @ 8 Ohms
- Intended for Cabinet Install
- 20oz Magnet
- 51Hz - 4.3kHz Frequency Response
Description
12" Guitar/P.A. Driver, 8 Ohm, 150 Watt
Recommended for professional audio mid-bass applications in a small sealed or medium vented enclosure.
Applications: Woofer | Midbass | Pro Audio
Box Type: Sealed | Vented
The Eminence Alpha-12A 12" Guitar/PA speaker is an ideal replacement driver for two-way sound reinforcement systems, keyboard, guitar combos. Made in the USA. 7-year manufacturer's warranty!
Features:
- Kapton coil former
- Polyamide-imide coated copper voice coil
- Ferrite magnet
- Vented and extended pole piece
- Pressed steel basket
- Paper cone
- Cloth accordian surround
Specifications:
- SPECIFICATION
- Nominal Basket Diameter: 12", 304.8mm
- Nominal Impedance*: 8 ohms
- Power Rating**
- Watts: 150W
- Music Program: 300W
- Resonance: 49Hz
- Usable Frequency Range: 51Hz - 4.3kHz
- Sensitivity***: 95.6dB
- Magnet Weight: 20 oz.
- Gap Height: 0.25", 6.35mm
- Voice Coil Diameter: 1.5", 38.1mm
- THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 49Hz
- DC Resistance (Re): 6.3
- Coil Inductance (Le): 0.79mH
- Mechanical Q (Qms): 6.53
- Electromagnetic Q (Qes): 0.88
- Total Q (Qts): 0.77
- Compliance Equivalent Volume (Vas): 121.5 liters / 4.3 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 125cc
- Mechanical Compliance of Suspension (Cms): 0.32mm/N
- BL Product (BL): 8.5 T-M
- Diaphragm Mass Inc. Airload (MMs): 33 grams
- Efficiency Bandwidth Product (EBP): 56
- Maximum Linear Excursion (Xmax): 2.4mm
- Surface Area of Cone (Sd): 519.5 cm2
- Maximum Mechanical Limit (Xlim): 6.6mm
- 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: 108.9 cu.in. / 1.78 liters
- Overall Diameter: 12.26", 311.4mm
- Baffle Hole Diameter: 11.06", 280.9mm
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.25", 6.4mm
- Mounting Holes B.C.D.: 11.71", 297.5mm
- Depth: 4.73", 120mm
- Net Weight: 5.3 lbs, 2.4 kg
- Shipping Weight: 7.4 lbs, 3.4 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
Details
- Manufacturer: Eminence
- MPN: ALPHA-12A
- Model Number: Alpha-12A
- UPC: 876358000043