Eminence Alpha-8A 8" Mid-Range Speaker, 8 Ohm

PA SKU # EMN ALPHA8A MFR # ALPHA-8A UPC # 876358000012
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  • Product Highlights
  • 8" (203.2mm) Mid-Bass Driver
  • 125W @ 8 Ohms
  • Intended for Cabinet Install
  • 20oz Magnet
  • 58Hz - 5kHz Frequency Response

8" Midrange Speaker, 8 Ohm, 125 Watt

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!
  • Kapton coil former
  • Polyamide-imide coated copper voice coil
  • Ferrite magnet
  • Pressed steel basket
  • Paper cone
  • Cloth accordian surround
  • Solid composition paper dust cap
  • 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
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