Key Features
- 8" (203.2mm) Mid-Bass Driver
- 125W @ 8 Ohms
- Intended for Cabinet Install
- 20oz Magnet
- 58Hz - 5kHz Frequency Response
Description
8" Midrange Speaker, 8 Ohm, 125 Watt
Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented satellite enclosure.
Applications: Woofer | Midbass | Midrange | Pro Audio | Car Audio | Bass Guitar
Box Type: Sealed | Vented
The stamped-steel frame Eminence Alpha-8A 8" PA Driver is an ideal woofer for small P.A. and club speaker systems, as well as keyboard or guitar amplifier combos. Made in the USA. 7-year manufacturer's warranty!
Features:
- Kapton coil former
- Polyamide-imide coated copper voice coil
- Ferrite magnet
- Pressed steel basket
- Paper cone
- Cloth accordian surround
- Solid composition paper dust cap
Specifications:
- SPECIFICATION
- Nominal Basket Diameter: 8", 203.2mm
- Nominal Impedance*: 8 ohms
- Power Rating**
- Watts: 125W
- Music Program: 250W
- Resonance: 73Hz
- Usable Frequency Range: 58Hz - 5kHz
- Sensitivity***: 94dB
- Magnet Weight: 20 oz.
- Gap Height: 0.25", 6.35mm
- Voice Coil Diameter: 1.5", 38.1mm
- THIELE & SMALL PARAMETERS
- Resonant Frequency (fs): 73Hz
- DC Resistance (Re): 5.3
- Coil Inductance (Le): 0.44mH
- Mechanical Q (Qms): 4.6
- Electromagnetic Q (Qes): 0.68
- Total Q (Qts): 0.59
- Compliance Equivalent Volume (Vas): 17.7 liters / 0.6 cu.ft.
- Peak Diaphragm Displacement Volume (Vd): 67cc
- Mechanical Compliance of Suspension (Cms): 0.28mm/N
- BL Product (BL): 7.8 T-M
- Diaphragm Mass Inc. Airload (MMs): 17 grams
- Efficiency Bandwidth Product (EBP): 107
- Maximum Linear Excursion (Xmax): 3.2mm
- Surface Area of Cone (Sd): 210 cm2
- Maximum Mechanical Limit (Xlim): 7.1mm
- MOUNTING INFORMATION
- Recommended Enclosure Volume
- Sealed: 5-7 liters / 0.18-0.25 cu.ft.
- Vented: 16.7-25.5 liters / 0.59-0.9 cu.ft.
- Driver Volume Displaced: 35.3 cu.in. / 0.58 liters
- Overall Diameter: 8.24", 209.2mm
- Baffle Hole Diameter: 7.13", 181mm
- Front Sealing Gasket: Fitted as standard
- Rear Sealing Gasket: Fitted as standard
- Mounting Holes Diameter: 0.22", 5.5mm
- Mounting Holes B.C.D.: 7.75", 196.9mm
- Depth: 3.25", 83mm
- Net Weight: 4.3 lbs, 1.9 kg
- Shipping Weight: 5.1 lbs, 2.3 kgs
- MATERIALS OF CONSTRUCTION
- Coil Construction: Copper voice coil
- Coil Former: Polyimide former
- Magnet Composition: Ferrite magnet
- Core Details: Vented core
- Basket Materials: Pressed steel basket
- Cone Composition: Paper cone
- Cone Edge Composition: Cloth cone edge
- Dust Cap Composition: Solid composition paper dust cap
Details
- Manufacturer: Eminence
- MPN: ALPHA-8A
- Model Number: Alpha-8A
- UPC: 876358000012